Merge pull request #3537 from fatedier/dev

release v0.51.1

.circleci/config.yml

@@ -0,0 +1,25 @@
+version: 2
+jobs:
+  go-version-latest:
+    docker:
+      - image: cimg/go:1.20-node
+    resource_class: large
+    steps:
+      - checkout
+      - run: make
+      - run: make alltest
+  go-version-last:
+    docker:
+      - image: cimg/go:1.19-node
+    resource_class: large
+    steps:
+      - checkout
+      - run: make
+      - run: make alltest
+
+workflows:
+  version: 2
+  build_and_test:
+    jobs:
+      - go-version-latest
+      - go-version-last

.github/FUNDING.yml

@@ -0,0 +1,4 @@
+# These are supported funding model platforms
+
+github: [fatedier]
+custom: ["https://afdian.net/a/fatedier"]

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -0,0 +1,77 @@
+name: Bug report
+description: Report a bug to help us improve frp
+
+body:
+- type: markdown
+  attributes:
+    value: |
+      Thanks for taking the time to fill out this bug report!
+- type: textarea
+  id: bug-description
+  attributes:
+    label: Bug Description
+    description: Tell us what issues you ran into
+    placeholder: Include information about what you tried, what you expected to happen, and what actually happened. The more details, the better!
+  validations:
+    required: true
+- type: input
+  id: frpc-version
+  attributes:
+    label: frpc Version
+    description: Include the output of `frpc -v`
+  validations:
+    required: true
+- type: input
+  id: frps-version
+  attributes:
+    label: frps Version
+    description: Include the output of `frps -v`
+  validations:
+    required: true
+- type: input
+  id: system-architecture
+  attributes:
+    label: System Architecture
+    description: Include which architecture you used, such as `linux/amd64`, `windows/amd64`
+  validations:
+    required: true
+- type: textarea
+  id: config
+  attributes:
+    label: Configurations
+    description: Include what configurrations you used and ran into this problem
+    placeholder: Pay attention to hiding the token and password in your output
+  validations:
+    required: true
+- type: textarea
+  id: log
+  attributes:
+    label: Logs
+    description: Prefer you providing releated error logs here
+    placeholder: Pay attention to hiding your personal informations
+- type: textarea
+  id: steps-to-reproduce
+  attributes:
+    label: Steps to reproduce
+    description: How to reproduce it? It's important for us to find the bug
+    value: |
+      1. 
+      2. 
+      3. 
+      ...
+- type: checkboxes
+  id: area
+  attributes:
+    label: Affected area
+    options:
+    - label: "Docs"
+    - label: "Installation"
+    - label: "Performance and Scalability"
+    - label: "Security"
+    - label: "User Experience"
+    - label: "Test and Release"
+    - label: "Developer Infrastructure"
+    - label: "Client Plugin"
+    - label: "Server Plugin"
+    - label: "Extensions"
+    - label: "Others"

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1 @@
+blank_issues_enabled: false

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -0,0 +1,36 @@
+name: Feature Request
+description: Suggest an idea to improve frp
+title: "[Feature Request] "
+
+body:
+- type: markdown
+  attributes:
+    value: |
+      This is only used to request new product features.
+- type: textarea
+  id: feature-request
+  attributes:
+    label: Describe the feature request
+    description: Tell us what's you want and why it should be added in frp.
+  validations:
+    required: true
+- type: textarea
+  id: alternatives
+  attributes:
+    label: Describe alternatives you've considered
+- type: checkboxes
+  id: area
+  attributes:
+    label: Affected area
+    options:
+    - label: "Docs"
+    - label: "Installation"
+    - label: "Performance and Scalability"
+    - label: "Security"
+    - label: "User Experience"
+    - label: "Test and Release"
+    - label: "Developer Infrastructure"
+    - label: "Client Plugin"
+    - label: "Server Plugin"
+    - label: "Extensions"
+    - label: "Others"

.github/pull_request_template.md

@@ -0,0 +1,6 @@
+### Summary
+
+copilot:summary
+
+### WHY
+<!-- author to complete -->

.github/workflows/build-and-push-image.yml

@@ -0,0 +1,83 @@
+name: Build Image and Publish to Dockerhub & GPR
+
+on:
+  release:
+    types: [ created ]
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Image tag'
+        required: true
+        default: 'test'
+permissions:
+  contents: read
+
+jobs:
+  image:
+    name: Build Image from Dockerfile and binaries
+    runs-on: ubuntu-latest
+    steps:
+      # environment
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: '0'
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
+      # get image tag name
+      - name: Get Image Tag Name
+        run: |
+          if [ x${{ github.event.inputs.tag }} == x"" ]; then
+            echo "TAG_NAME=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
+          else
+            echo "TAG_NAME=${{ github.event.inputs.tag }}" >> $GITHUB_ENV
+          fi
+      - name: Login to DockerHub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_PASSWORD }}
+
+      - name: Login to the GPR
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.GPR_TOKEN }}
+
+      # prepare image tags
+      - name: Prepare Image Tags
+        run: |
+          echo "DOCKERFILE_FRPC_PATH=dockerfiles/Dockerfile-for-frpc" >> $GITHUB_ENV
+          echo "DOCKERFILE_FRPS_PATH=dockerfiles/Dockerfile-for-frps" >> $GITHUB_ENV
+          echo "TAG_FRPC=fatedier/frpc:${{ env.TAG_NAME }}" >> $GITHUB_ENV
+          echo "TAG_FRPS=fatedier/frps:${{ env.TAG_NAME }}" >> $GITHUB_ENV
+          echo "TAG_FRPC_GPR=ghcr.io/fatedier/frpc:${{ env.TAG_NAME }}" >> $GITHUB_ENV
+          echo "TAG_FRPS_GPR=ghcr.io/fatedier/frps:${{ env.TAG_NAME }}" >> $GITHUB_ENV
+
+      - name: Build and push frpc
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: ./dockerfiles/Dockerfile-for-frpc
+          platforms: linux/amd64,linux/arm/v7,linux/arm64,linux/ppc64le,linux/s390x
+          push: true
+          tags: |
+            ${{ env.TAG_FRPC }}
+            ${{ env.TAG_FRPC_GPR }}
+
+      - name: Build and push frps
+        uses: docker/build-push-action@v3
+        with:
+          context: .
+          file: ./dockerfiles/Dockerfile-for-frps
+          platforms: linux/amd64,linux/arm/v7,linux/arm64,linux/ppc64le,linux/s390x
+          push: true
+          tags: |
+            ${{ env.TAG_FRPS }}
+            ${{ env.TAG_FRPS_GPR }}

.github/workflows/golangci-lint.yml

@@ -0,0 +1,41 @@
+name: golangci-lint
+on:
+  push:
+    branches:
+    - master
+    - dev
+  pull_request:
+permissions:
+  contents: read
+  # Optional: allow read access to pull request. Use with `only-new-issues` option.
+  pull-requests: read
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/setup-go@v3
+        with:
+          go-version: '1.20'
+      - uses: actions/checkout@v3
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          # Optional: version of golangci-lint to use in form of v1.2 or v1.2.3 or `latest` to use the latest version
+          version: v1.51
+
+          # Optional: golangci-lint command line arguments.
+          # args: --issues-exit-code=0
+
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          # only-new-issues: true
+
+          # Optional: if set to true then the all caching functionality will be complete disabled,
+          #           takes precedence over all other caching options.
+          # skip-cache: true
+
+          # Optional: if set to true then the action don't cache or restore ~/go/pkg.
+          # skip-pkg-cache: true
+
+          # Optional: if set to true then the action don't cache or restore ~/.cache/go-build.
+          # skip-build-cache: true

.github/workflows/goreleaser.yml

@@ -0,0 +1,30 @@
+name: goreleaser
+
+on:
+  workflow_dispatch:
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: '1.20'
+          
+      - name: Make All
+        run: |
+          ./package.sh
+
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v3
+        with:
+          version: latest
+          args: release --rm-dist --release-notes=./Release.md
+        env:
+          GITHUB_TOKEN: ${{ secrets.GPR_TOKEN }}

.github/workflows/stale.yml

@@ -0,0 +1,34 @@
+name: "Close stale issues"
+on:
+  schedule:
+  - cron: "20 0 * * *"
+  workflow_dispatch:
+    inputs:
+      debug-only:
+        description: 'In debug mod'
+        required: false
+        default: 'false'
+permissions:
+  contents: read
+
+jobs:
+  stale:
+    permissions:
+      issues: write  # for actions/stale to close stale issues
+      pull-requests: write  # for actions/stale to close stale PRs
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/stale@v6
+      with:
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+        stale-issue-message: 'Issues go stale after 30d of inactivity. Stale issues rot after an additional 7d of inactivity and eventually close.'
+        stale-pr-message: "PRs go stale after 30d of inactivity. Stale PRs rot after an additional 7d of inactivity and eventually close."
+        stale-issue-label: 'lifecycle/stale'
+        exempt-issue-labels: 'bug,doc,enhancement,future,proposal,question,testing,todo,easy,help wanted,assigned'
+        stale-pr-label: 'lifecycle/stale'
+        exempt-pr-labels: 'bug,doc,enhancement,future,proposal,question,testing,todo,easy,help wanted,assigned'
+        days-before-stale: 30
+        days-before-close: 7
+        debug-only: ${{ github.event.inputs.debug-only }}
+        exempt-all-pr-milestones: true
+        exempt-all-pr-assignees: true

.gitignore

@@ -25,7 +25,14 @@ _testmain.go
 
 # Self
 bin/
+packages/
+release/
+test/bin/
+vendor/
+lastversion/
+dist/
+.idea/
+.vscode/
 
 # Cache
 *.swp
-*.swo

.golangci.yml

@@ -0,0 +1,144 @@
+service:
+  golangci-lint-version: 1.51.x # use the fixed version to not introduce new linters unexpectedly
+  
+run:
+  concurrency: 4
+  # timeout for analysis, e.g. 30s, 5m, default is 1m
+  deadline: 20m
+  build-tags:
+  - integ
+  - integfuzz
+  # which dirs to skip: they won't be analyzed;
+  # can use regexp here: generated.*, regexp is applied on full path;
+  # default value is empty list, but next dirs are always skipped independently
+  # from this option's value:
+  #       vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
+  skip-dirs:
+    - genfiles$
+    - vendor$
+    - bin$
+
+  # which files to skip: they will be analyzed, but issues from them
+  # won't be reported. Default value is empty list, but there is
+  # no need to include all autogenerated files, we confidently recognize
+  # autogenerated files. If it's not please let us know.
+  skip-files:
+    - ".*\\.pb\\.go"
+    - ".*\\.gen\\.go"
+
+linters:
+  disable-all: true
+  enable:
+  - unused
+  - errcheck
+  - exportloopref
+  - gocritic
+  - gofumpt
+  - goimports
+  - revive
+  - gosimple
+  - govet
+  - ineffassign
+  - lll
+  - misspell
+  - staticcheck
+  - stylecheck
+  - typecheck
+  - unconvert
+  - unparam
+  - gci
+  - gosec
+  - asciicheck
+  - prealloc
+  - predeclared
+  - makezero
+  fast: false
+
+linters-settings:
+  errcheck:
+    # report about not checking of errors in type assetions: `a := b.(MyStruct)`;
+    # default is false: such cases aren't reported by default.
+    check-type-assertions: false
+
+    # report about assignment of errors to blank identifier: `num, _ := strconv.Atoi(numStr)`;
+    # default is false: such cases aren't reported by default.
+    check-blank: false
+  govet:
+    # report about shadowed variables
+    check-shadowing: false
+  maligned:
+    # print struct with more effective memory layout or not, false by default
+    suggest-new: true
+  misspell:
+    # Correct spellings using locale preferences for US or UK.
+    # Default is to use a neutral variety of English.
+    # Setting locale to US will correct the British spelling of 'colour' to 'color'.
+    locale: US
+    ignore-words:
+    - cancelled
+    - marshalled
+  lll:
+    # max line length, lines longer will be reported. Default is 120.
+    # '\t' is counted as 1 character by default, and can be changed with the tab-width option
+    line-length: 160
+    # tab width in spaces. Default to 1.
+    tab-width: 1
+  gocritic:
+    disabled-checks:
+    - exitAfterDefer
+  unused:
+    check-exported: false
+  unparam:
+    # Inspect exported functions, default is false. Set to true if no external program/library imports your code.
+    # XXX: if you enable this setting, unparam will report a lot of false-positives in text editors:
+    # if it's called for subdir of a project it can't find external interfaces. All text editor integrations
+    # with golangci-lint call it on a directory with the changed file.
+    check-exported: false
+  gci:
+    sections:
+    - standard
+    - default
+    - prefix(github.com/fatedier/frp/)
+  gosec:
+    severity: "low"
+    confidence: "low"
+    excludes:
+    - G102
+    - G112
+    - G306
+    - G401
+    - G402
+    - G404
+    - G501
+
+issues:
+  # List of regexps of issue texts to exclude, empty list by default.
+  # But independently from this option we use default exclude patterns,
+  # it can be disabled by `exclude-use-default: false`. To list all
+  # excluded by default patterns execute `golangci-lint run --help`
+  # exclude:
+  #  - composite literal uses unkeyed fields
+
+  exclude-rules:
+    # Exclude some linters from running on test files.
+    - path: _test\.go$|^tests/|^samples/
+      linters:
+        - errcheck
+        - maligned
+
+    # keep it until we only support go1.20
+    - linters:
+        - staticcheck
+      text: "SA1019: rand.Seed has been deprecated"
+
+  # Independently from option `exclude` we use default exclude patterns,
+  # it can be disabled by this option. To list all
+  # excluded by default patterns execute `golangci-lint run --help`.
+  # Default value for this option is true.
+  exclude-use-default: true
+
+  # Maximum issues count per one linter. Set to 0 to disable. Default is 50.
+  max-per-linter: 0
+
+  # Maximum count of issues with the same text. Set to 0 to disable. Default is 3.
+  max-same-issues: 0

.goreleaser.yml

@@ -0,0 +1,22 @@
+builds:
+  - skip: true
+checksum:
+  name_template: '{{ .ProjectName }}_sha256_checksums.txt'
+  algorithm: sha256
+  extra_files:
+  - glob: ./release/packages/*
+release:
+  # Same as for github
+  # Note: it can only be one: either github, gitlab or gitea
+  github:
+    owner: fatedier
+    name: frp
+
+  draft: false
+
+  # You can add extra pre-existing files to the release.
+  # The filename on the release will be the last part of the path (base). If
+  # another file with the same name exists, the latest one found will be used.
+  # Defaults to empty.
+  extra_files:
+    - glob: ./release/packages/*

.travis.yml

@@ -1,12 +0,0 @@
-sudo: false
-language: go
-
-go:
-    - 1.4.2
-    - 1.5.1
-
-install:
-    - make
-
-script:
-    - make test

Godeps/Godeps.json

@@ -1,18 +0,0 @@
-{
-	"ImportPath": "frp",
-	"GoVersion": "go1.4",
-	"Packages": [
-		"./..."
-	],
-	"Deps": [
-		{
-			"ImportPath": "github.com/astaxie/beego/logs",
-			"Comment": "v1.5.0-9-gfb7314f",
-			"Rev": "fb7314f8ac86b83ccd34386518d97cf2363e2ae5"
-		},
-		{
-			"ImportPath": "github.com/vaughan0/go-ini",
-			"Rev": "a98ad7ee00ec53921f08832bc06ecf7fd600e6a1"
-		}
-	]
-}

Godeps/Readme

@@ -1,5 +0,0 @@
-This directory tree is generated automatically by godep.
-
-Please do not edit.
-
-See https://github.com/tools/godep for more information.

Godeps/_workspace/.gitignore

@@ -1,2 +0,0 @@
-/pkg
-/bin

Godeps/_workspace/src/github.com/astaxie/beego/LICENSE

@@ -1,13 +0,0 @@
-Copyright 2014 astaxie
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.

Godeps/_workspace/src/github.com/astaxie/beego/logs/README.md

@@ -1,63 +0,0 @@
-## logs
-logs is a Go logs manager. It can use many logs adapters. The repo is inspired by `database/sql` .
-
-
-## How to install?
-
-	go get github.com/astaxie/beego/logs
-
-
-## What adapters are supported?
-
-As of now this logs support console, file,smtp and conn.
-
-
-## How to use it?
-
-First you must import it
-
-	import (
-		"github.com/astaxie/beego/logs"
-	)
-
-Then init a Log (example with console adapter)
-
-	log := NewLogger(10000)
-	log.SetLogger("console", "")	
-
-> the first params stand for how many channel
-
-Use it like this:	
-	
-	log.Trace("trace")
-	log.Info("info")
-	log.Warn("warning")
-	log.Debug("debug")
-	log.Critical("critical")
-
-
-## File adapter
-
-Configure file adapter like this:
-
-	log := NewLogger(10000)
-	log.SetLogger("file", `{"filename":"test.log"}`)
-
-
-## Conn adapter
-
-Configure like this:
-
-	log := NewLogger(1000)
-	log.SetLogger("conn", `{"net":"tcp","addr":":7020"}`)
-	log.Info("info")
-
-
-## Smtp adapter
-
-Configure like this:
-
-	log := NewLogger(10000)
-	log.SetLogger("smtp", `{"username":"beegotest@gmail.com","password":"xxxxxxxx","host":"smtp.gmail.com:587","sendTos":["xiemengjun@gmail.com"]}`)
-	log.Critical("sendmail critical")
-	time.Sleep(time.Second * 30)

Godeps/_workspace/src/github.com/astaxie/beego/logs/conn.go

@@ -1,116 +0,0 @@
-// Copyright 2014 beego Author. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package logs
-
-import (
-	"encoding/json"
-	"io"
-	"log"
-	"net"
-)
-
-// ConnWriter implements LoggerInterface.
-// it writes messages in keep-live tcp connection.
-type ConnWriter struct {
-	lg             *log.Logger
-	innerWriter    io.WriteCloser
-	ReconnectOnMsg bool   `json:"reconnectOnMsg"`
-	Reconnect      bool   `json:"reconnect"`
-	Net            string `json:"net"`
-	Addr           string `json:"addr"`
-	Level          int    `json:"level"`
-}
-
-// create new ConnWrite returning as LoggerInterface.
-func NewConn() LoggerInterface {
-	conn := new(ConnWriter)
-	conn.Level = LevelTrace
-	return conn
-}
-
-// init connection writer with json config.
-// json config only need key "level".
-func (c *ConnWriter) Init(jsonconfig string) error {
-	return json.Unmarshal([]byte(jsonconfig), c)
-}
-
-// write message in connection.
-// if connection is down, try to re-connect.
-func (c *ConnWriter) WriteMsg(msg string, level int) error {
-	if level > c.Level {
-		return nil
-	}
-	if c.neddedConnectOnMsg() {
-		err := c.connect()
-		if err != nil {
-			return err
-		}
-	}
-
-	if c.ReconnectOnMsg {
-		defer c.innerWriter.Close()
-	}
-	c.lg.Println(msg)
-	return nil
-}
-
-// implementing method. empty.
-func (c *ConnWriter) Flush() {
-
-}
-
-// destroy connection writer and close tcp listener.
-func (c *ConnWriter) Destroy() {
-	if c.innerWriter != nil {
-		c.innerWriter.Close()
-	}
-}
-
-func (c *ConnWriter) connect() error {
-	if c.innerWriter != nil {
-		c.innerWriter.Close()
-		c.innerWriter = nil
-	}
-
-	conn, err := net.Dial(c.Net, c.Addr)
-	if err != nil {
-		return err
-	}
-
-	if tcpConn, ok := conn.(*net.TCPConn); ok {
-		tcpConn.SetKeepAlive(true)
-	}
-
-	c.innerWriter = conn
-	c.lg = log.New(conn, "", log.Ldate|log.Ltime)
-	return nil
-}
-
-func (c *ConnWriter) neddedConnectOnMsg() bool {
-	if c.Reconnect {
-		c.Reconnect = false
-		return true
-	}
-
-	if c.innerWriter == nil {
-		return true
-	}
-
-	return c.ReconnectOnMsg
-}
-
-func init() {
-	Register("conn", NewConn)
-}

Godeps/_workspace/src/github.com/astaxie/beego/logs/console.go

@@ -1,95 +0,0 @@
-// Copyright 2014 beego Author. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package logs
-
-import (
-	"encoding/json"
-	"log"
-	"os"
-	"runtime"
-)
-
-type Brush func(string) string
-
-func NewBrush(color string) Brush {
-	pre := "\033["
-	reset := "\033[0m"
-	return func(text string) string {
-		return pre + color + "m" + text + reset
-	}
-}
-
-var colors = []Brush{
-	NewBrush("1;37"), // Emergency	white
-	NewBrush("1;36"), // Alert			cyan
-	NewBrush("1;35"), // Critical   magenta
-	NewBrush("1;31"), // Error      red
-	NewBrush("1;33"), // Warning    yellow
-	NewBrush("1;32"), // Notice			green
-	NewBrush("1;34"), // Informational	blue
-	NewBrush("1;34"), // Debug      blue
-}
-
-// ConsoleWriter implements LoggerInterface and writes messages to terminal.
-type ConsoleWriter struct {
-	lg    *log.Logger
-	Level int `json:"level"`
-}
-
-// create ConsoleWriter returning as LoggerInterface.
-func NewConsole() LoggerInterface {
-	cw := &ConsoleWriter{
-		lg:    log.New(os.Stdout, "", log.Ldate|log.Ltime),
-		Level: LevelDebug,
-	}
-	return cw
-}
-
-// init console logger.
-// jsonconfig like '{"level":LevelTrace}'.
-func (c *ConsoleWriter) Init(jsonconfig string) error {
-	if len(jsonconfig) == 0 {
-		return nil
-	}
-	return json.Unmarshal([]byte(jsonconfig), c)
-}
-
-// write message in console.
-func (c *ConsoleWriter) WriteMsg(msg string, level int) error {
-	if level > c.Level {
-		return nil
-	}
-	if goos := runtime.GOOS; goos == "windows" {
-		c.lg.Println(msg)
-		return nil
-	}
-	c.lg.Println(colors[level](msg))
-
-	return nil
-}
-
-// implementing method. empty.
-func (c *ConsoleWriter) Destroy() {
-
-}
-
-// implementing method. empty.
-func (c *ConsoleWriter) Flush() {
-
-}
-
-func init() {
-	Register("console", NewConsole)
-}

Godeps/_workspace/src/github.com/astaxie/beego/logs/es/es.go

@@ -1,76 +0,0 @@
-package es
-
-import (
-	"encoding/json"
-	"errors"
-	"fmt"
-	"net"
-	"net/url"
-	"time"
-
-	"github.com/astaxie/beego/logs"
-	"github.com/belogik/goes"
-)
-
-func NewES() logs.LoggerInterface {
-	cw := &esLogger{
-		Level: logs.LevelDebug,
-	}
-	return cw
-}
-
-type esLogger struct {
-	*goes.Connection
-	DSN   string `json:"dsn"`
-	Level int    `json:"level"`
-}
-
-// {"dsn":"http://localhost:9200/","level":1}
-func (el *esLogger) Init(jsonconfig string) error {
-	err := json.Unmarshal([]byte(jsonconfig), el)
-	if err != nil {
-		return err
-	}
-	if el.DSN == "" {
-		return errors.New("empty dsn")
-	} else if u, err := url.Parse(el.DSN); err != nil {
-		return err
-	} else if u.Path == "" {
-		return errors.New("missing prefix")
-	} else if host, port, err := net.SplitHostPort(u.Host); err != nil {
-		return err
-	} else {
-		conn := goes.NewConnection(host, port)
-		el.Connection = conn
-	}
-	return nil
-}
-
-func (el *esLogger) WriteMsg(msg string, level int) error {
-	if level > el.Level {
-		return nil
-	}
-	t := time.Now()
-	vals := make(map[string]interface{})
-	vals["@timestamp"] = t.Format(time.RFC3339)
-	vals["@msg"] = msg
-	d := goes.Document{
-		Index:  fmt.Sprintf("%04d.%02d.%02d", t.Year(), t.Month(), t.Day()),
-		Type:   "logs",
-		Fields: vals,
-	}
-	_, err := el.Index(d, nil)
-	return err
-}
-
-func (el *esLogger) Destroy() {
-
-}
-
-func (el *esLogger) Flush() {
-
-}
-
-func init() {
-	logs.Register("es", NewES)
-}

Godeps/_workspace/src/github.com/astaxie/beego/logs/file.go

@@ -1,283 +0,0 @@
-// Copyright 2014 beego Author. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package logs
-
-import (
-	"bytes"
-	"encoding/json"
-	"errors"
-	"fmt"
-	"io"
-	"log"
-	"os"
-	"path/filepath"
-	"strings"
-	"sync"
-	"time"
-)
-
-// FileLogWriter implements LoggerInterface.
-// It writes messages by lines limit, file size limit, or time frequency.
-type FileLogWriter struct {
-	*log.Logger
-	mw *MuxWriter
-	// The opened file
-	Filename string `json:"filename"`
-
-	Maxlines          int `json:"maxlines"`
-	maxlines_curlines int
-
-	// Rotate at size
-	Maxsize         int `json:"maxsize"`
-	maxsize_cursize int
-
-	// Rotate daily
-	Daily          bool  `json:"daily"`
-	Maxdays        int64 `json:"maxdays"`
-	daily_opendate int
-
-	Rotate bool `json:"rotate"`
-
-	startLock sync.Mutex // Only one log can write to the file
-
-	Level int `json:"level"`
-}
-
-// an *os.File writer with locker.
-type MuxWriter struct {
-	sync.Mutex
-	fd *os.File
-}
-
-// write to os.File.
-func (l *MuxWriter) Write(b []byte) (int, error) {
-	l.Lock()
-	defer l.Unlock()
-	return l.fd.Write(b)
-}
-
-// set os.File in writer.
-func (l *MuxWriter) SetFd(fd *os.File) {
-	if l.fd != nil {
-		l.fd.Close()
-	}
-	l.fd = fd
-}
-
-// create a FileLogWriter returning as LoggerInterface.
-func NewFileWriter() LoggerInterface {
-	w := &FileLogWriter{
-		Filename: "",
-		Maxlines: 1000000,
-		Maxsize:  1 << 28, //256 MB
-		Daily:    true,
-		Maxdays:  7,
-		Rotate:   true,
-		Level:    LevelTrace,
-	}
-	// use MuxWriter instead direct use os.File for lock write when rotate
-	w.mw = new(MuxWriter)
-	// set MuxWriter as Logger's io.Writer
-	w.Logger = log.New(w.mw, "", log.Ldate|log.Ltime)
-	return w
-}
-
-// Init file logger with json config.
-// jsonconfig like:
-//	{
-//	"filename":"logs/beego.log",
-//	"maxlines":10000,
-//	"maxsize":1<<30,
-//	"daily":true,
-//	"maxdays":15,
-//	"rotate":true
-//	}
-func (w *FileLogWriter) Init(jsonconfig string) error {
-	err := json.Unmarshal([]byte(jsonconfig), w)
-	if err != nil {
-		return err
-	}
-	if len(w.Filename) == 0 {
-		return errors.New("jsonconfig must have filename")
-	}
-	err = w.startLogger()
-	return err
-}
-
-// start file logger. create log file and set to locker-inside file writer.
-func (w *FileLogWriter) startLogger() error {
-	fd, err := w.createLogFile()
-	if err != nil {
-		return err
-	}
-	w.mw.SetFd(fd)
-	return w.initFd()
-}
-
-func (w *FileLogWriter) docheck(size int) {
-	w.startLock.Lock()
-	defer w.startLock.Unlock()
-	if w.Rotate && ((w.Maxlines > 0 && w.maxlines_curlines >= w.Maxlines) ||
-		(w.Maxsize > 0 && w.maxsize_cursize >= w.Maxsize) ||
-		(w.Daily && time.Now().Day() != w.daily_opendate)) {
-		if err := w.DoRotate(); err != nil {
-			fmt.Fprintf(os.Stderr, "FileLogWriter(%q): %s\n", w.Filename, err)
-			return
-		}
-	}
-	w.maxlines_curlines++
-	w.maxsize_cursize += size
-}
-
-// write logger message into file.
-func (w *FileLogWriter) WriteMsg(msg string, level int) error {
-	if level > w.Level {
-		return nil
-	}
-	n := 24 + len(msg) // 24 stand for the length "2013/06/23 21:00:22 [T] "
-	w.docheck(n)
-	w.Logger.Println(msg)
-	return nil
-}
-
-func (w *FileLogWriter) createLogFile() (*os.File, error) {
-	// Open the log file
-	fd, err := os.OpenFile(w.Filename, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0660)
-	return fd, err
-}
-
-func (w *FileLogWriter) initFd() error {
-	fd := w.mw.fd
-	finfo, err := fd.Stat()
-	if err != nil {
-		return fmt.Errorf("get stat err: %s\n", err)
-	}
-	w.maxsize_cursize = int(finfo.Size())
-	w.daily_opendate = time.Now().Day()
-	w.maxlines_curlines = 0
-	if finfo.Size() > 0 {
-		count, err := w.lines()
-		if err != nil {
-			return err
-		}
-		w.maxlines_curlines = count
-	}
-	return nil
-}
-
-func (w *FileLogWriter) lines() (int, error) {
-	fd, err := os.Open(w.Filename)
-	if err != nil {
-		return 0, err
-	}
-	defer fd.Close()
-
-	buf := make([]byte, 32768) // 32k
-	count := 0
-	lineSep := []byte{'\n'}
-
-	for {
-		c, err := fd.Read(buf)
-		if err != nil && err != io.EOF {
-			return count, err
-		}
-
-		count += bytes.Count(buf[:c], lineSep)
-
-		if err == io.EOF {
-			break
-		}
-	}
-
-	return count, nil
-}
-
-// DoRotate means it need to write file in new file.
-// new file name like xx.log.2013-01-01.2
-func (w *FileLogWriter) DoRotate() error {
-	_, err := os.Lstat(w.Filename)
-	if err == nil { // file exists
-		// Find the next available number
-		num := 1
-		fname := ""
-		for ; err == nil && num <= 999; num++ {
-			fname = w.Filename + fmt.Sprintf(".%s.%03d", time.Now().Format("2006-01-02"), num)
-			_, err = os.Lstat(fname)
-		}
-		// return error if the last file checked still existed
-		if err == nil {
-			return fmt.Errorf("Rotate: Cannot find free log number to rename %s\n", w.Filename)
-		}
-
-		// block Logger's io.Writer
-		w.mw.Lock()
-		defer w.mw.Unlock()
-
-		fd := w.mw.fd
-		fd.Close()
-
-		// close fd before rename
-		// Rename the file to its newfound home
-		err = os.Rename(w.Filename, fname)
-		if err != nil {
-			return fmt.Errorf("Rotate: %s\n", err)
-		}
-
-		// re-start logger
-		err = w.startLogger()
-		if err != nil {
-			return fmt.Errorf("Rotate StartLogger: %s\n", err)
-		}
-
-		go w.deleteOldLog()
-	}
-
-	return nil
-}
-
-func (w *FileLogWriter) deleteOldLog() {
-	dir := filepath.Dir(w.Filename)
-	filepath.Walk(dir, func(path string, info os.FileInfo, err error) (returnErr error) {
-		defer func() {
-			if r := recover(); r != nil {
-				returnErr = fmt.Errorf("Unable to delete old log '%s', error: %+v", path, r)
-				fmt.Println(returnErr)
-			}
-		}()
-
-		if !info.IsDir() && info.ModTime().Unix() < (time.Now().Unix()-60*60*24*w.Maxdays) {
-			if strings.HasPrefix(filepath.Base(path), filepath.Base(w.Filename)) {
-				os.Remove(path)
-			}
-		}
-		return
-	})
-}
-
-// destroy file logger, close file writer.
-func (w *FileLogWriter) Destroy() {
-	w.mw.fd.Close()
-}
-
-// flush file logger.
-// there are no buffering messages in file logger in memory.
-// flush file means sync file from disk.
-func (w *FileLogWriter) Flush() {
-	w.mw.fd.Sync()
-}
-
-func init() {
-	Register("file", NewFileWriter)
-}

Godeps/_workspace/src/github.com/astaxie/beego/logs/log.go

@@ -1,350 +0,0 @@
-// Copyright 2014 beego Author. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// Usage:
-//
-// import "github.com/astaxie/beego/logs"
-//
-//	log := NewLogger(10000)
-//	log.SetLogger("console", "")
-//
-//	> the first params stand for how many channel
-//
-// Use it like this:
-//
-//	log.Trace("trace")
-//	log.Info("info")
-//	log.Warn("warning")
-//	log.Debug("debug")
-//	log.Critical("critical")
-//
-//  more docs http://beego.me/docs/module/logs.md
-package logs
-
-import (
-	"fmt"
-	"path"
-	"runtime"
-	"sync"
-)
-
-// RFC5424 log message levels.
-const (
-	LevelEmergency = iota
-	LevelAlert
-	LevelCritical
-	LevelError
-	LevelWarning
-	LevelNotice
-	LevelInformational
-	LevelDebug
-)
-
-// Legacy loglevel constants to ensure backwards compatibility.
-//
-// Deprecated: will be removed in 1.5.0.
-const (
-	LevelInfo  = LevelInformational
-	LevelTrace = LevelDebug
-	LevelWarn  = LevelWarning
-)
-
-type loggerType func() LoggerInterface
-
-// LoggerInterface defines the behavior of a log provider.
-type LoggerInterface interface {
-	Init(config string) error
-	WriteMsg(msg string, level int) error
-	Destroy()
-	Flush()
-}
-
-var adapters = make(map[string]loggerType)
-
-// Register makes a log provide available by the provided name.
-// If Register is called twice with the same name or if driver is nil,
-// it panics.
-func Register(name string, log loggerType) {
-	if log == nil {
-		panic("logs: Register provide is nil")
-	}
-	if _, dup := adapters[name]; dup {
-		panic("logs: Register called twice for provider " + name)
-	}
-	adapters[name] = log
-}
-
-// BeeLogger is default logger in beego application.
-// it can contain several providers and log message into all providers.
-type BeeLogger struct {
-	lock                sync.Mutex
-	level               int
-	enableFuncCallDepth bool
-	loggerFuncCallDepth int
-	asynchronous        bool
-	msg                 chan *logMsg
-	outputs             map[string]LoggerInterface
-}
-
-type logMsg struct {
-	level int
-	msg   string
-}
-
-// NewLogger returns a new BeeLogger.
-// channellen means the number of messages in chan.
-// if the buffering chan is full, logger adapters write to file or other way.
-func NewLogger(channellen int64) *BeeLogger {
-	bl := new(BeeLogger)
-	bl.level = LevelDebug
-	bl.loggerFuncCallDepth = 2
-	bl.msg = make(chan *logMsg, channellen)
-	bl.outputs = make(map[string]LoggerInterface)
-	return bl
-}
-
-func (bl *BeeLogger) Async() *BeeLogger {
-	bl.asynchronous = true
-	go bl.startLogger()
-	return bl
-}
-
-// SetLogger provides a given logger adapter into BeeLogger with config string.
-// config need to be correct JSON as string: {"interval":360}.
-func (bl *BeeLogger) SetLogger(adaptername string, config string) error {
-	bl.lock.Lock()
-	defer bl.lock.Unlock()
-	if log, ok := adapters[adaptername]; ok {
-		lg := log()
-		err := lg.Init(config)
-		bl.outputs[adaptername] = lg
-		if err != nil {
-			fmt.Println("logs.BeeLogger.SetLogger: " + err.Error())
-			return err
-		}
-	} else {
-		return fmt.Errorf("logs: unknown adaptername %q (forgotten Register?)", adaptername)
-	}
-	return nil
-}
-
-// remove a logger adapter in BeeLogger.
-func (bl *BeeLogger) DelLogger(adaptername string) error {
-	bl.lock.Lock()
-	defer bl.lock.Unlock()
-	if lg, ok := bl.outputs[adaptername]; ok {
-		lg.Destroy()
-		delete(bl.outputs, adaptername)
-		return nil
-	} else {
-		return fmt.Errorf("logs: unknown adaptername %q (forgotten Register?)", adaptername)
-	}
-}
-
-func (bl *BeeLogger) writerMsg(loglevel int, msg string) error {
-	lm := new(logMsg)
-	lm.level = loglevel
-	if bl.enableFuncCallDepth {
-		_, file, line, ok := runtime.Caller(bl.loggerFuncCallDepth)
-		if !ok {
-			file = "???"
-			line = 0
-		}
-		_, filename := path.Split(file)
-		lm.msg = fmt.Sprintf("[%s:%d] %s", filename, line, msg)
-	} else {
-		lm.msg = msg
-	}
-	if bl.asynchronous {
-		bl.msg <- lm
-	} else {
-		for name, l := range bl.outputs {
-			err := l.WriteMsg(lm.msg, lm.level)
-			if err != nil {
-				fmt.Println("unable to WriteMsg to adapter:", name, err)
-				return err
-			}
-		}
-	}
-	return nil
-}
-
-// Set log message level.
-//
-// If message level (such as LevelDebug) is higher than logger level (such as LevelWarning),
-// log providers will not even be sent the message.
-func (bl *BeeLogger) SetLevel(l int) {
-	bl.level = l
-}
-
-// set log funcCallDepth
-func (bl *BeeLogger) SetLogFuncCallDepth(d int) {
-	bl.loggerFuncCallDepth = d
-}
-
-// get log funcCallDepth for wrapper
-func (bl *BeeLogger) GetLogFuncCallDepth() int {
-	return bl.loggerFuncCallDepth
-}
-
-// enable log funcCallDepth
-func (bl *BeeLogger) EnableFuncCallDepth(b bool) {
-	bl.enableFuncCallDepth = b
-}
-
-// start logger chan reading.
-// when chan is not empty, write logs.
-func (bl *BeeLogger) startLogger() {
-	for {
-		select {
-		case bm := <-bl.msg:
-			for _, l := range bl.outputs {
-				err := l.WriteMsg(bm.msg, bm.level)
-				if err != nil {
-					fmt.Println("ERROR, unable to WriteMsg:", err)
-				}
-			}
-		}
-	}
-}
-
-// Log EMERGENCY level message.
-func (bl *BeeLogger) Emergency(format string, v ...interface{}) {
-	if LevelEmergency > bl.level {
-		return
-	}
-	msg := fmt.Sprintf("[M] "+format, v...)
-	bl.writerMsg(LevelEmergency, msg)
-}
-
-// Log ALERT level message.
-func (bl *BeeLogger) Alert(format string, v ...interface{}) {
-	if LevelAlert > bl.level {
-		return
-	}
-	msg := fmt.Sprintf("[A] "+format, v...)
-	bl.writerMsg(LevelAlert, msg)
-}
-
-// Log CRITICAL level message.
-func (bl *BeeLogger) Critical(format string, v ...interface{}) {
-	if LevelCritical > bl.level {
-		return
-	}
-	msg := fmt.Sprintf("[C] "+format, v...)
-	bl.writerMsg(LevelCritical, msg)
-}
-
-// Log ERROR level message.
-func (bl *BeeLogger) Error(format string, v ...interface{}) {
-	if LevelError > bl.level {
-		return
-	}
-	msg := fmt.Sprintf("[E] "+format, v...)
-	bl.writerMsg(LevelError, msg)
-}
-
-// Log WARNING level message.
-func (bl *BeeLogger) Warning(format string, v ...interface{}) {
-	if LevelWarning > bl.level {
-		return
-	}
-	msg := fmt.Sprintf("[W] "+format, v...)
-	bl.writerMsg(LevelWarning, msg)
-}
-
-// Log NOTICE level message.
-func (bl *BeeLogger) Notice(format string, v ...interface{}) {
-	if LevelNotice > bl.level {
-		return
-	}
-	msg := fmt.Sprintf("[N] "+format, v...)
-	bl.writerMsg(LevelNotice, msg)
-}
-
-// Log INFORMATIONAL level message.
-func (bl *BeeLogger) Informational(format string, v ...interface{}) {
-	if LevelInformational > bl.level {
-		return
-	}
-	msg := fmt.Sprintf("[I] "+format, v...)
-	bl.writerMsg(LevelInformational, msg)
-}
-
-// Log DEBUG level message.
-func (bl *BeeLogger) Debug(format string, v ...interface{}) {
-	if LevelDebug > bl.level {
-		return
-	}
-	msg := fmt.Sprintf("[D] "+format, v...)
-	bl.writerMsg(LevelDebug, msg)
-}
-
-// Log WARN level message.
-// compatibility alias for Warning()
-func (bl *BeeLogger) Warn(format string, v ...interface{}) {
-	if LevelWarning > bl.level {
-		return
-	}
-	msg := fmt.Sprintf("[W] "+format, v...)
-	bl.writerMsg(LevelWarning, msg)
-}
-
-// Log INFO level message.
-// compatibility alias for Informational()
-func (bl *BeeLogger) Info(format string, v ...interface{}) {
-	if LevelInformational > bl.level {
-		return
-	}
-	msg := fmt.Sprintf("[I] "+format, v...)
-	bl.writerMsg(LevelInformational, msg)
-}
-
-// Log TRACE level message.
-// compatibility alias for Debug()
-func (bl *BeeLogger) Trace(format string, v ...interface{}) {
-	if LevelDebug > bl.level {
-		return
-	}
-	msg := fmt.Sprintf("[D] "+format, v...)
-	bl.writerMsg(LevelDebug, msg)
-}
-
-// flush all chan data.
-func (bl *BeeLogger) Flush() {
-	for _, l := range bl.outputs {
-		l.Flush()
-	}
-}
-
-// close logger, flush all chan data and destroy all adapters in BeeLogger.
-func (bl *BeeLogger) Close() {
-	for {
-		if len(bl.msg) > 0 {
-			bm := <-bl.msg
-			for _, l := range bl.outputs {
-				err := l.WriteMsg(bm.msg, bm.level)
-				if err != nil {
-					fmt.Println("ERROR, unable to WriteMsg (while closing logger):", err)
-				}
-			}
-			continue
-		}
-		break
-	}
-	for _, l := range bl.outputs {
-		l.Flush()
-		l.Destroy()
-	}
-}

Godeps/_workspace/src/github.com/astaxie/beego/logs/smtp.go

@@ -1,165 +0,0 @@
-// Copyright 2014 beego Author. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package logs
-
-import (
-	"crypto/tls"
-	"encoding/json"
-	"fmt"
-	"net"
-	"net/smtp"
-	"strings"
-	"time"
-)
-
-const (
-// no usage
-// subjectPhrase = "Diagnostic message from server"
-)
-
-// smtpWriter implements LoggerInterface and is used to send emails via given SMTP-server.
-type SmtpWriter struct {
-	Username           string   `json:"Username"`
-	Password           string   `json:"password"`
-	Host               string   `json:"Host"`
-	Subject            string   `json:"subject"`
-	FromAddress        string   `json:"fromAddress"`
-	RecipientAddresses []string `json:"sendTos"`
-	Level              int      `json:"level"`
-}
-
-// create smtp writer.
-func NewSmtpWriter() LoggerInterface {
-	return &SmtpWriter{Level: LevelTrace}
-}
-
-// init smtp writer with json config.
-// config like:
-//	{
-//		"Username":"example@gmail.com",
-//		"password:"password",
-//		"host":"smtp.gmail.com:465",
-//		"subject":"email title",
-//		"fromAddress":"from@example.com",
-//		"sendTos":["email1","email2"],
-//		"level":LevelError
-//	}
-func (s *SmtpWriter) Init(jsonconfig string) error {
-	err := json.Unmarshal([]byte(jsonconfig), s)
-	if err != nil {
-		return err
-	}
-	return nil
-}
-
-func (s *SmtpWriter) GetSmtpAuth(host string) smtp.Auth {
-	if len(strings.Trim(s.Username, " ")) == 0 && len(strings.Trim(s.Password, " ")) == 0 {
-		return nil
-	}
-	return smtp.PlainAuth(
-		"",
-		s.Username,
-		s.Password,
-		host,
-	)
-}
-
-func (s *SmtpWriter) sendMail(hostAddressWithPort string, auth smtp.Auth, fromAddress string, recipients []string, msgContent []byte) error {
-	client, err := smtp.Dial(hostAddressWithPort)
-	if err != nil {
-		return err
-	}
-
-	host, _, _ := net.SplitHostPort(hostAddressWithPort)
-	tlsConn := &tls.Config{
-		InsecureSkipVerify: true,
-		ServerName:         host,
-	}
-	if err = client.StartTLS(tlsConn); err != nil {
-		return err
-	}
-
-	if auth != nil {
-		if err = client.Auth(auth); err != nil {
-			return err
-		}
-	}
-
-	if err = client.Mail(fromAddress); err != nil {
-		return err
-	}
-
-	for _, rec := range recipients {
-		if err = client.Rcpt(rec); err != nil {
-			return err
-		}
-	}
-
-	w, err := client.Data()
-	if err != nil {
-		return err
-	}
-	_, err = w.Write([]byte(msgContent))
-	if err != nil {
-		return err
-	}
-
-	err = w.Close()
-	if err != nil {
-		return err
-	}
-
-	err = client.Quit()
-	if err != nil {
-		return err
-	}
-
-	return nil
-}
-
-// write message in smtp writer.
-// it will send an email with subject and only this message.
-func (s *SmtpWriter) WriteMsg(msg string, level int) error {
-	if level > s.Level {
-		return nil
-	}
-
-	hp := strings.Split(s.Host, ":")
-
-	// Set up authentication information.
-	auth := s.GetSmtpAuth(hp[0])
-
-	// Connect to the server, authenticate, set the sender and recipient,
-	// and send the email all in one step.
-	content_type := "Content-Type: text/plain" + "; charset=UTF-8"
-	mailmsg := []byte("To: " + strings.Join(s.RecipientAddresses, ";") + "\r\nFrom: " + s.FromAddress + "<" + s.FromAddress +
-		">\r\nSubject: " + s.Subject + "\r\n" + content_type + "\r\n\r\n" + fmt.Sprintf(".%s", time.Now().Format("2006-01-02 15:04:05")) + msg)
-
-	return s.sendMail(s.Host, auth, s.FromAddress, s.RecipientAddresses, mailmsg)
-}
-
-// implementing method. empty.
-func (s *SmtpWriter) Flush() {
-	return
-}
-
-// implementing method. empty.
-func (s *SmtpWriter) Destroy() {
-	return
-}
-
-func init() {
-	Register("smtp", NewSmtpWriter)
-}

Godeps/_workspace/src/github.com/astaxie/beego/utils/captcha/LICENSE

@@ -1,19 +0,0 @@
-Copyright (c) 2011-2014 Dmitry Chestnykh <dmitry@codingrobots.com>
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.

Godeps/_workspace/src/github.com/vaughan0/go-ini/LICENSE

@@ -1,14 +0,0 @@
-Copyright (c) 2013 Vaughan Newton
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
-documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
-rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit
-persons to whom the Software is furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
-Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
-WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Godeps/_workspace/src/github.com/vaughan0/go-ini/README.md

@@ -1,70 +0,0 @@
-go-ini
-======
-
-INI parsing library for Go (golang).
-
-View the API documentation [here](http://godoc.org/github.com/vaughan0/go-ini).
-
-Usage
------
-
-Parse an INI file:
-
-```go
-import "github.com/vaughan0/go-ini"
-
-file, err := ini.LoadFile("myfile.ini")
-```
-
-Get data from the parsed file:
-
-```go
-name, ok := file.Get("person", "name")
-if !ok {
-  panic("'name' variable missing from 'person' section")
-}
-```
-
-Iterate through values in a section:
-
-```go
-for key, value := range file["mysection"] {
-  fmt.Printf("%s => %s\n", key, value)
-}
-```
-
-Iterate through sections in a file:
-
-```go
-for name, section := range file {
-  fmt.Printf("Section name: %s\n", name)
-}
-```
-
-File Format
------------
-
-INI files are parsed by go-ini line-by-line. Each line may be one of the following:
-
-  * A section definition: [section-name]
-  * A property: key = value
-  * A comment: #blahblah _or_ ;blahblah
-  * Blank. The line will be ignored.
-
-Properties defined before any section headers are placed in the default section, which has
-the empty string as it's key.
-
-Example:
-
-```ini
-# I am a comment
-; So am I!
-
-[apples]
-colour = red or green
-shape = applish
-
-[oranges]
-shape = square
-colour = blue
-```

Godeps/_workspace/src/github.com/vaughan0/go-ini/ini.go

@@ -1,123 +0,0 @@
-// Package ini provides functions for parsing INI configuration files.
-package ini
-
-import (
-	"bufio"
-	"fmt"
-	"io"
-	"os"
-	"regexp"
-	"strings"
-)
-
-var (
-	sectionRegex = regexp.MustCompile(`^\[(.*)\]$`)
-	assignRegex  = regexp.MustCompile(`^([^=]+)=(.*)$`)
-)
-
-// ErrSyntax is returned when there is a syntax error in an INI file.
-type ErrSyntax struct {
-	Line   int
-	Source string // The contents of the erroneous line, without leading or trailing whitespace
-}
-
-func (e ErrSyntax) Error() string {
-	return fmt.Sprintf("invalid INI syntax on line %d: %s", e.Line, e.Source)
-}
-
-// A File represents a parsed INI file.
-type File map[string]Section
-
-// A Section represents a single section of an INI file.
-type Section map[string]string
-
-// Returns a named Section. A Section will be created if one does not already exist for the given name.
-func (f File) Section(name string) Section {
-	section := f[name]
-	if section == nil {
-		section = make(Section)
-		f[name] = section
-	}
-	return section
-}
-
-// Looks up a value for a key in a section and returns that value, along with a boolean result similar to a map lookup.
-func (f File) Get(section, key string) (value string, ok bool) {
-	if s := f[section]; s != nil {
-		value, ok = s[key]
-	}
-	return
-}
-
-// Loads INI data from a reader and stores the data in the File.
-func (f File) Load(in io.Reader) (err error) {
-	bufin, ok := in.(*bufio.Reader)
-	if !ok {
-		bufin = bufio.NewReader(in)
-	}
-	return parseFile(bufin, f)
-}
-
-// Loads INI data from a named file and stores the data in the File.
-func (f File) LoadFile(file string) (err error) {
-	in, err := os.Open(file)
-	if err != nil {
-		return
-	}
-	defer in.Close()
-	return f.Load(in)
-}
-
-func parseFile(in *bufio.Reader, file File) (err error) {
-	section := ""
-	lineNum := 0
-	for done := false; !done; {
-		var line string
-		if line, err = in.ReadString('\n'); err != nil {
-			if err == io.EOF {
-				done = true
-			} else {
-				return
-			}
-		}
-		lineNum++
-		line = strings.TrimSpace(line)
-		if len(line) == 0 {
-			// Skip blank lines
-			continue
-		}
-		if line[0] == ';' || line[0] == '#' {
-			// Skip comments
-			continue
-		}
-
-		if groups := assignRegex.FindStringSubmatch(line); groups != nil {
-			key, val := groups[1], groups[2]
-			key, val = strings.TrimSpace(key), strings.TrimSpace(val)
-			file.Section(section)[key] = val
-		} else if groups := sectionRegex.FindStringSubmatch(line); groups != nil {
-			name := strings.TrimSpace(groups[1])
-			section = name
-			// Create the section if it does not exist
-			file.Section(section)
-		} else {
-			return ErrSyntax{lineNum, line}
-		}
-
-	}
-	return nil
-}
-
-// Loads and returns a File from a reader.
-func Load(in io.Reader) (File, error) {
-	file := make(File)
-	err := file.Load(in)
-	return file, err
-}
-
-// Loads and returns an INI File from a file on disk.
-func LoadFile(filename string) (File, error) {
-	file := make(File)
-	err := file.LoadFile(filename)
-	return file, err
-}

Godeps/_workspace/src/github.com/vaughan0/go-ini/test.ini

@@ -1,2 +0,0 @@
-[default]
-stuff = things

Makefile

@@ -1,22 +1,68 @@
 export PATH := $(GOPATH)/bin:$(PATH)
-export NEW_GOPATH := $(shell pwd)
+export GO111MODULE=on
+LDFLAGS := -s -w
 
-all: build
+all: fmt build
 
-build: godep fmt frps frpc
+build: frps frpc
 
-godep:
-	@go get github.com/tools/godep
-	godep restore
+# compile assets into binary file
+file:
+	rm -rf ./assets/frps/static/*
+	rm -rf ./assets/frpc/static/*
+	cp -rf ./web/frps/dist/* ./assets/frps/static
+	cp -rf ./web/frpc/dist/* ./assets/frpc/static
 
 fmt:
-	@GOPATH=$(NEW_GOPATH) godep go fmt ./...
+	go fmt ./...
+
+fmt-more:
+	gofumpt -l -w .
+
+gci:
+	gci write -s standard -s default -s "prefix(github.com/fatedier/frp/)" ./
+
+vet:
+	go vet ./...
 
 frps:
-	GOPATH=$(NEW_GOPATH) godep go build -o bin/frps ./src/frp/cmd/frps
+	env CGO_ENABLED=0 go build -trimpath -ldflags "$(LDFLAGS)" -o bin/frps ./cmd/frps
 
 frpc:
-	GOPATH=$(NEW_GOPATH) godep go build -o bin/frpc ./src/frp/cmd/frpc
+	env CGO_ENABLED=0 go build -trimpath -ldflags "$(LDFLAGS)" -o bin/frpc ./cmd/frpc
 
-test:
-	@GOPATH=$(NEW_GOPATH) godep go test ./...
+test: gotest
+
+gotest:
+	go test -v --cover ./assets/...
+	go test -v --cover ./cmd/...
+	go test -v --cover ./client/...
+	go test -v --cover ./server/...
+	go test -v --cover ./pkg/...
+
+e2e:
+	./hack/run-e2e.sh
+
+e2e-trace:
+	DEBUG=true LOG_LEVEL=trace ./hack/run-e2e.sh
+
+e2e-compatibility-last-frpc:
+	if [ ! -d "./lastversion" ]; then \
+		TARGET_DIRNAME=lastversion ./hack/download.sh; \
+	fi
+	FRPC_PATH="`pwd`/lastversion/frpc" ./hack/run-e2e.sh
+	rm -r ./lastversion
+
+e2e-compatibility-last-frps:
+	if [ ! -d "./lastversion" ]; then \
+		TARGET_DIRNAME=lastversion ./hack/download.sh; \
+	fi
+	FRPS_PATH="`pwd`/lastversion/frps" ./hack/run-e2e.sh
+	rm -r ./lastversion
+
+alltest: vet gotest e2e
+	
+clean:
+	rm -f ./bin/frpc
+	rm -f ./bin/frps
+	rm -rf ./lastversion

Makefile.cross-compiles

@@ -0,0 +1,27 @@
+export PATH := $(GOPATH)/bin:$(PATH)
+export GO111MODULE=on
+LDFLAGS := -s -w
+
+os-archs=darwin:amd64 darwin:arm64 freebsd:386 freebsd:amd64 linux:386 linux:amd64 linux:arm linux:arm64 windows:386 windows:amd64 windows:arm64 linux:mips64 linux:mips64le linux:mips:softfloat linux:mipsle:softfloat linux:riscv64
+
+all: build
+
+build: app
+
+app:
+	@$(foreach n, $(os-archs),\
+		os=$(shell echo "$(n)" | cut -d : -f 1);\
+		arch=$(shell echo "$(n)" | cut -d : -f 2);\
+		gomips=$(shell echo "$(n)" | cut -d : -f 3);\
+		target_suffix=$${os}_$${arch};\
+		echo "Build $${os}-$${arch}...";\
+		env CGO_ENABLED=0 GOOS=$${os} GOARCH=$${arch} GOMIPS=$${gomips} go build -trimpath -ldflags "$(LDFLAGS)" -o ./release/frpc_$${target_suffix} ./cmd/frpc;\
+		env CGO_ENABLED=0 GOOS=$${os} GOARCH=$${arch} GOMIPS=$${gomips} go build -trimpath -ldflags "$(LDFLAGS)" -o ./release/frps_$${target_suffix} ./cmd/frps;\
+		echo "Build $${os}-$${arch} done";\
+	)
+	@mv ./release/frpc_windows_386 ./release/frpc_windows_386.exe
+	@mv ./release/frps_windows_386 ./release/frps_windows_386.exe
+	@mv ./release/frpc_windows_amd64 ./release/frpc_windows_amd64.exe
+	@mv ./release/frps_windows_amd64 ./release/frps_windows_amd64.exe
+	@mv ./release/frpc_windows_arm64 ./release/frpc_windows_arm64.exe
+	@mv ./release/frps_windows_arm64 ./release/frps_windows_arm64.exe

README_zh.md

@@ -0,0 +1,99 @@
+# frp
+
+[![Build Status](https://circleci.com/gh/fatedier/frp.svg?style=shield)](https://circleci.com/gh/fatedier/frp)
+[![GitHub release](https://img.shields.io/github/tag/fatedier/frp.svg?label=release)](https://github.com/fatedier/frp/releases)
+
+[README](README.md) | [中文文档](README_zh.md)
+
+frp 是一个专注于内网穿透的高性能的反向代理应用，支持 TCP、UDP、HTTP、HTTPS 等多种协议，且支持 P2P 通信。可以将内网服务以安全、便捷的方式通过具有公网 IP 节点的中转暴露到公网。
+
+<h3 align="center">Gold Sponsors</h3>
+<!--gold sponsors start-->
+<p align="center">
+  <a href="https://workos.com/?utm_campaign=github_repo&utm_medium=referral&utm_content=frp&utm_source=github" target="_blank">
+    <img width="350px" src="https://raw.githubusercontent.com/fatedier/frp/dev/doc/pic/sponsor_workos.png">
+  </a>
+</p>
+<!--gold sponsors end-->
+
+## 为什么使用 frp ？
+
+通过在具有公网 IP 的节点上部署 frp 服务端，可以轻松地将内网服务穿透到公网，同时提供诸多专业的功能特性，这包括：
+
+* 客户端服务端通信支持 TCP、QUIC、KCP 以及 Websocket 等多种协议。
+* 采用 TCP 连接流式复用，在单个连接间承载更多请求，节省连接建立时间，降低请求延迟。
+* 代理组间的负载均衡。
+* 端口复用，多个服务通过同一个服务端端口暴露。
+* 支持 P2P 通信，流量不经过服务器中转，充分利用带宽资源。
+* 多个原生支持的客户端插件（静态文件查看，HTTPS/HTTP 协议转换，HTTP、SOCK5 代理等），便于独立使用 frp 客户端完成某些工作。
+* 高度扩展性的服务端插件系统，易于结合自身需求进行功能扩展。
+* 服务端和客户端 UI 页面。
+
+## 开发状态
+
+frp 目前已被很多公司广泛用于测试、生产环境。
+
+master 分支用于发布稳定版本，dev 分支用于开发，您可以尝试下载最新的 release 版本进行测试。
+
+我们正在进行 v2 大版本的开发，将会尝试在各个方面进行重构和升级，且不会与 v1 版本进行兼容，预计会持续较长的一段时间。
+
+现在的 v0 版本将会在合适的时间切换为 v1 版本并且保证兼容性，后续只做 bug 修复和优化，不再进行大的功能性更新。
+
+### 关于 v2 的一些说明
+
+当前整体形势不佳，面临的生活工作压力很大。
+
+v2 版本的复杂度和难度比我们预期的要高得多。我只能利用零散的时间进行开发，而且由于上下文经常被打断，效率极低。由于这种情况可能会持续一段时间，我们仍然会在当前版本上进行一些优化和迭代，直到我们有更多空闲时间来推进大版本的重构。
+
+v2 的构想是基于我多年在云原生领域，特别是在 K8s 和 ServiceMesh 方面的工作经验和思考。它的核心是一个现代化的四层和七层代理，类似于 envoy。这个代理本身高度可扩展，不仅可以用于实现内网穿透的功能，还可以应用于更多领域。在这个高度可扩展的内核基础上，我们将实现 frp v1 中的所有功能，并且能够以一种更加优雅的方式实现原先架构中无法实现或不易实现的功能。同时，我们将保持高效的开发和迭代能力。
+
+除此之外，我希望 frp 本身也成为一个高度可扩展的系统和平台，就像我们可以基于 K8s 提供一系列扩展能力一样。在 K8s 上，我们可以根据企业需求进行定制化开发，例如使用 CRD、controller 模式、webhook、CSI 和 CNI 等。在 frp v1 中，我们引入了服务端插件的概念，实现了一些简单的扩展性。但是，它实际上依赖于简单的 HTTP 协议，并且需要用户自己启动独立的进程和管理。这种方式远远不够灵活和方便，而且现实世界的需求千差万别，我们不能期望一个由少数人维护的非营利性开源项目能够满足所有人的需求。
+
+最后，我们意识到像配置管理、权限验证、证书管理和管理 API 等模块的当前设计并不够现代化。尽管我们可能在 v1 版本中进行一些优化，但确保兼容性是一个令人头疼的问题，需要投入大量精力来解决。
+
+非常感谢您对 frp 的支持。
+
+## 文档
+
+完整文档已经迁移至 [https://gofrp.org](https://gofrp.org/docs)。
+
+## 为 frp 做贡献
+
+frp 是一个免费且开源的项目，我们欢迎任何人为其开发和进步贡献力量。
+
+* 在使用过程中出现任何问题，可以通过 [issues](https://github.com/fatedier/frp/issues) 来反馈。
+* Bug 的修复可以直接提交 Pull Request 到 dev 分支。
+* 如果是增加新的功能特性，请先创建一个 issue 并做简单描述以及大致的实现方法，提议被采纳后，就可以创建一个实现新特性的 Pull Request。
+* 欢迎对说明文档做出改善，帮助更多的人使用 frp，特别是英文文档。
+* 贡献代码请提交 PR 至 dev 分支，master 分支仅用于发布稳定可用版本。
+* 如果你有任何其他方面的问题或合作，欢迎发送邮件至 fatedier@gmail.com 。
+
+**提醒：和项目相关的问题最好在 [issues](https://github.com/fatedier/frp/issues) 中反馈，这样方便其他有类似问题的人可以快速查找解决方法，并且也避免了我们重复回答一些问题。**
+
+## 赞助
+
+如果您觉得 frp 对你有帮助，欢迎给予我们一定的捐助来维持项目的长期发展。
+
+### Sponsors
+
+长期赞助可以帮助我们保持项目的持续发展。
+
+您可以通过 [GitHub Sponsors](https://github.com/sponsors/fatedier) 赞助我们。
+
+国内用户可以通过 [爱发电](https://afdian.net/a/fatedier) 赞助我们。
+
+企业赞助者可以将贵公司的 Logo 以及链接放置在项目 README 文件中。
+
+### 知识星球
+
+如果您想了解更多 frp 相关技术以及更新详解，或者寻求任何帮助及咨询，都可以通过微信扫描下方的二维码付费加入知识星球的官方社群：
+
+![zsxq](/doc/pic/zsxq.jpg)
+
+### 支付宝扫码捐赠
+
+![donate-alipay](/doc/pic/donate-alipay.png)
+
+### 微信支付捐赠
+
+![donate-wechatpay](/doc/pic/donate-wechatpay.png)

Release.md

@@ -0,0 +1,4 @@
+### Fixes
+
+* Fix the issue of not disabling tcp keepalive when configuring `tcp_keepalive` = -1 in frps.
+* Fix a race condition error.

assets/assets.go

@@ -0,0 +1,48 @@
+// Copyright 2016 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package assets
+
+import (
+	"io/fs"
+	"net/http"
+)
+
+var (
+	// read-only filesystem created by "embed" for embedded files
+	content fs.FS
+
+	FileSystem http.FileSystem
+
+	// if prefix is not empty, we get file content from disk
+	prefixPath string
+)
+
+// if path is empty, load assets in memory
+// or set FileSystem using disk files
+func Load(path string) {
+	prefixPath = path
+	if prefixPath != "" {
+		FileSystem = http.Dir(prefixPath)
+	} else {
+		FileSystem = http.FS(content)
+	}
+}
+
+func Register(fileSystem fs.FS) {
+	subFs, err := fs.Sub(fileSystem, "static")
+	if err == nil {
+		content = subFs
+	}
+}

assets/frpc/embed.go

@@ -0,0 +1,14 @@
+package frpc
+
+import (
+	"embed"
+
+	"github.com/fatedier/frp/assets"
+)
+
+//go:embed static/*
+var content embed.FS
+
+func init() {
+	assets.Register(content)
+}

assets/frpc/static/index.html

@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="utf-8">
+    <title>frp client admin UI</title>
+  <script type="module" crossorigin src="./index-1c7ed8b0.js"></script>
+  <link rel="stylesheet" href="./index-1e2a7ce0.css">
+</head>
+
+<body>
+    <div id="app"></div>
+    
+</body>
+
+</html>

assets/frps/embed.go

@@ -0,0 +1,14 @@
+package frpc
+
+import (
+	"embed"
+
+	"github.com/fatedier/frp/assets"
+)
+
+//go:embed static/*
+var content embed.FS
+
+func init() {
+	assets.Register(content)
+}

assets/frps/static/index.html

@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html lang="en" class="dark">
+
+<head>
+    <meta charset="utf-8">
+    <title>frps dashboard</title>
+  <script type="module" crossorigin src="./index-ea3edf22.js"></script>
+  <link rel="stylesheet" href="./index-1e0c7400.css">
+</head>
+
+<body>
+    <div id="app"></div>
+    
+</body>
+
+</html>

client/admin.go

@@ -0,0 +1,85 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package client
+
+import (
+	"net"
+	"net/http"
+	"net/http/pprof"
+	"time"
+
+	"github.com/gorilla/mux"
+
+	"github.com/fatedier/frp/assets"
+	utilnet "github.com/fatedier/frp/pkg/util/net"
+)
+
+var (
+	httpServerReadTimeout  = 60 * time.Second
+	httpServerWriteTimeout = 60 * time.Second
+)
+
+func (svr *Service) RunAdminServer(address string) (err error) {
+	// url router
+	router := mux.NewRouter()
+
+	router.HandleFunc("/healthz", svr.healthz)
+
+	// debug
+	if svr.cfg.PprofEnable {
+		router.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
+		router.HandleFunc("/debug/pprof/profile", pprof.Profile)
+		router.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
+		router.HandleFunc("/debug/pprof/trace", pprof.Trace)
+		router.PathPrefix("/debug/pprof/").HandlerFunc(pprof.Index)
+	}
+
+	subRouter := router.NewRoute().Subrouter()
+	user, passwd := svr.cfg.AdminUser, svr.cfg.AdminPwd
+	subRouter.Use(utilnet.NewHTTPAuthMiddleware(user, passwd).SetAuthFailDelay(200 * time.Millisecond).Middleware)
+
+	// api, see admin_api.go
+	subRouter.HandleFunc("/api/reload", svr.apiReload).Methods("GET")
+	subRouter.HandleFunc("/api/stop", svr.apiStop).Methods("POST")
+	subRouter.HandleFunc("/api/status", svr.apiStatus).Methods("GET")
+	subRouter.HandleFunc("/api/config", svr.apiGetConfig).Methods("GET")
+	subRouter.HandleFunc("/api/config", svr.apiPutConfig).Methods("PUT")
+
+	// view
+	subRouter.Handle("/favicon.ico", http.FileServer(assets.FileSystem)).Methods("GET")
+	subRouter.PathPrefix("/static/").Handler(utilnet.MakeHTTPGzipHandler(http.StripPrefix("/static/", http.FileServer(assets.FileSystem)))).Methods("GET")
+	subRouter.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		http.Redirect(w, r, "/static/", http.StatusMovedPermanently)
+	})
+
+	server := &http.Server{
+		Addr:         address,
+		Handler:      router,
+		ReadTimeout:  httpServerReadTimeout,
+		WriteTimeout: httpServerWriteTimeout,
+	}
+	if address == "" {
+		address = ":http"
+	}
+	ln, err := net.Listen("tcp", address)
+	if err != nil {
+		return err
+	}
+
+	go func() {
+		_ = server.Serve(ln)
+	}()
+	return
+}

client/admin_api.go

@@ -0,0 +1,272 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package client
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"os"
+	"sort"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/samber/lo"
+
+	"github.com/fatedier/frp/client/proxy"
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/util/log"
+)
+
+type GeneralResponse struct {
+	Code int
+	Msg  string
+}
+
+// /healthz
+func (svr *Service) healthz(w http.ResponseWriter, r *http.Request) {
+	w.WriteHeader(200)
+}
+
+// GET /api/reload
+func (svr *Service) apiReload(w http.ResponseWriter, r *http.Request) {
+	res := GeneralResponse{Code: 200}
+
+	log.Info("api request [/api/reload]")
+	defer func() {
+		log.Info("api response [/api/reload], code [%d]", res.Code)
+		w.WriteHeader(res.Code)
+		if len(res.Msg) > 0 {
+			_, _ = w.Write([]byte(res.Msg))
+		}
+	}()
+
+	_, pxyCfgs, visitorCfgs, err := config.ParseClientConfig(svr.cfgFile)
+	if err != nil {
+		res.Code = 400
+		res.Msg = err.Error()
+		log.Warn("reload frpc proxy config error: %s", res.Msg)
+		return
+	}
+
+	if err = svr.ReloadConf(pxyCfgs, visitorCfgs); err != nil {
+		res.Code = 500
+		res.Msg = err.Error()
+		log.Warn("reload frpc proxy config error: %s", res.Msg)
+		return
+	}
+	log.Info("success reload conf")
+}
+
+// POST /api/stop
+func (svr *Service) apiStop(w http.ResponseWriter, r *http.Request) {
+	res := GeneralResponse{Code: 200}
+
+	log.Info("api request [/api/stop]")
+	defer func() {
+		log.Info("api response [/api/stop], code [%d]", res.Code)
+		w.WriteHeader(res.Code)
+		if len(res.Msg) > 0 {
+			_, _ = w.Write([]byte(res.Msg))
+		}
+	}()
+
+	go svr.GracefulClose(100 * time.Millisecond)
+}
+
+type StatusResp map[string][]ProxyStatusResp
+
+type ProxyStatusResp struct {
+	Name       string `json:"name"`
+	Type       string `json:"type"`
+	Status     string `json:"status"`
+	Err        string `json:"err"`
+	LocalAddr  string `json:"local_addr"`
+	Plugin     string `json:"plugin"`
+	RemoteAddr string `json:"remote_addr"`
+}
+
+func NewProxyStatusResp(status *proxy.WorkingStatus, serverAddr string) ProxyStatusResp {
+	psr := ProxyStatusResp{
+		Name:   status.Name,
+		Type:   status.Type,
+		Status: status.Phase,
+		Err:    status.Err,
+	}
+	baseCfg := status.Cfg.GetBaseConfig()
+	if baseCfg.LocalPort != 0 {
+		psr.LocalAddr = net.JoinHostPort(baseCfg.LocalIP, strconv.Itoa(baseCfg.LocalPort))
+	}
+	psr.Plugin = baseCfg.Plugin
+
+	if status.Err == "" {
+		psr.RemoteAddr = status.RemoteAddr
+		if lo.Contains([]string{"tcp", "udp"}, status.Type) {
+			psr.RemoteAddr = serverAddr + psr.RemoteAddr
+		}
+	}
+	return psr
+}
+
+// GET /api/status
+func (svr *Service) apiStatus(w http.ResponseWriter, r *http.Request) {
+	var (
+		buf []byte
+		res StatusResp = make(map[string][]ProxyStatusResp)
+	)
+
+	log.Info("Http request [/api/status]")
+	defer func() {
+		log.Info("Http response [/api/status]")
+		buf, _ = json.Marshal(&res)
+		_, _ = w.Write(buf)
+	}()
+
+	ps := svr.ctl.pm.GetAllProxyStatus()
+	for _, status := range ps {
+		res[status.Type] = append(res[status.Type], NewProxyStatusResp(status, svr.cfg.ServerAddr))
+	}
+
+	for _, arrs := range res {
+		if len(arrs) <= 1 {
+			continue
+		}
+		sort.Slice(arrs, func(i, j int) bool {
+			return strings.Compare(arrs[i].Name, arrs[j].Name) < 0
+		})
+	}
+}
+
+// GET /api/config
+func (svr *Service) apiGetConfig(w http.ResponseWriter, r *http.Request) {
+	res := GeneralResponse{Code: 200}
+
+	log.Info("Http get request [/api/config]")
+	defer func() {
+		log.Info("Http get response [/api/config], code [%d]", res.Code)
+		w.WriteHeader(res.Code)
+		if len(res.Msg) > 0 {
+			_, _ = w.Write([]byte(res.Msg))
+		}
+	}()
+
+	if svr.cfgFile == "" {
+		res.Code = 400
+		res.Msg = "frpc has no config file path"
+		log.Warn("%s", res.Msg)
+		return
+	}
+
+	content, err := config.GetRenderedConfFromFile(svr.cfgFile)
+	if err != nil {
+		res.Code = 400
+		res.Msg = err.Error()
+		log.Warn("load frpc config file error: %s", res.Msg)
+		return
+	}
+
+	rows := strings.Split(string(content), "\n")
+	newRows := make([]string, 0, len(rows))
+	for _, row := range rows {
+		row = strings.TrimSpace(row)
+		if strings.HasPrefix(row, "token") {
+			continue
+		}
+		newRows = append(newRows, row)
+	}
+	res.Msg = strings.Join(newRows, "\n")
+}
+
+// PUT /api/config
+func (svr *Service) apiPutConfig(w http.ResponseWriter, r *http.Request) {
+	res := GeneralResponse{Code: 200}
+
+	log.Info("Http put request [/api/config]")
+	defer func() {
+		log.Info("Http put response [/api/config], code [%d]", res.Code)
+		w.WriteHeader(res.Code)
+		if len(res.Msg) > 0 {
+			_, _ = w.Write([]byte(res.Msg))
+		}
+	}()
+
+	// get new config content
+	body, err := io.ReadAll(r.Body)
+	if err != nil {
+		res.Code = 400
+		res.Msg = fmt.Sprintf("read request body error: %v", err)
+		log.Warn("%s", res.Msg)
+		return
+	}
+
+	if len(body) == 0 {
+		res.Code = 400
+		res.Msg = "body can't be empty"
+		log.Warn("%s", res.Msg)
+		return
+	}
+
+	// get token from origin content
+	token := ""
+	b, err := os.ReadFile(svr.cfgFile)
+	if err != nil {
+		res.Code = 400
+		res.Msg = err.Error()
+		log.Warn("load frpc config file error: %s", res.Msg)
+		return
+	}
+	content := string(b)
+
+	for _, row := range strings.Split(content, "\n") {
+		row = strings.TrimSpace(row)
+		if strings.HasPrefix(row, "token") {
+			token = row
+			break
+		}
+	}
+
+	tmpRows := make([]string, 0)
+	for _, row := range strings.Split(string(body), "\n") {
+		row = strings.TrimSpace(row)
+		if strings.HasPrefix(row, "token") {
+			continue
+		}
+		tmpRows = append(tmpRows, row)
+	}
+
+	newRows := make([]string, 0)
+	if token != "" {
+		for _, row := range tmpRows {
+			newRows = append(newRows, row)
+			if strings.HasPrefix(row, "[common]") {
+				newRows = append(newRows, token)
+			}
+		}
+	} else {
+		newRows = tmpRows
+	}
+	content = strings.Join(newRows, "\n")
+
+	err = os.WriteFile(svr.cfgFile, []byte(content), 0o644)
+	if err != nil {
+		res.Code = 500
+		res.Msg = fmt.Sprintf("write content to frpc config file error: %v", err)
+		log.Warn("%s", res.Msg)
+		return
+	}
+}

client/control.go

@@ -0,0 +1,361 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package client
+
+import (
+	"context"
+	"io"
+	"net"
+	"runtime/debug"
+	"time"
+
+	"github.com/fatedier/golib/control/shutdown"
+	"github.com/fatedier/golib/crypto"
+
+	"github.com/fatedier/frp/client/proxy"
+	"github.com/fatedier/frp/client/visitor"
+	"github.com/fatedier/frp/pkg/auth"
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/msg"
+	"github.com/fatedier/frp/pkg/transport"
+	"github.com/fatedier/frp/pkg/util/xlog"
+)
+
+type Control struct {
+	// service context
+	ctx context.Context
+	xl  *xlog.Logger
+
+	// Unique ID obtained from frps.
+	// It should be attached to the login message when reconnecting.
+	runID string
+
+	// manage all proxies
+	pxyCfgs map[string]config.ProxyConf
+	pm      *proxy.Manager
+
+	// manage all visitors
+	vm *visitor.Manager
+
+	// control connection
+	conn net.Conn
+
+	cm *ConnectionManager
+
+	// put a message in this channel to send it over control connection to server
+	sendCh chan (msg.Message)
+
+	// read from this channel to get the next message sent by server
+	readCh chan (msg.Message)
+
+	// goroutines can block by reading from this channel, it will be closed only in reader() when control connection is closed
+	closedCh chan struct{}
+
+	closedDoneCh chan struct{}
+
+	// last time got the Pong message
+	lastPong time.Time
+
+	// The client configuration
+	clientCfg config.ClientCommonConf
+
+	readerShutdown     *shutdown.Shutdown
+	writerShutdown     *shutdown.Shutdown
+	msgHandlerShutdown *shutdown.Shutdown
+
+	// sets authentication based on selected method
+	authSetter auth.Setter
+
+	msgTransporter transport.MessageTransporter
+}
+
+func NewControl(
+	ctx context.Context, runID string, conn net.Conn, cm *ConnectionManager,
+	clientCfg config.ClientCommonConf,
+	pxyCfgs map[string]config.ProxyConf,
+	visitorCfgs map[string]config.VisitorConf,
+	authSetter auth.Setter,
+) *Control {
+	// new xlog instance
+	ctl := &Control{
+		ctx:                ctx,
+		xl:                 xlog.FromContextSafe(ctx),
+		runID:              runID,
+		conn:               conn,
+		cm:                 cm,
+		pxyCfgs:            pxyCfgs,
+		sendCh:             make(chan msg.Message, 100),
+		readCh:             make(chan msg.Message, 100),
+		closedCh:           make(chan struct{}),
+		closedDoneCh:       make(chan struct{}),
+		clientCfg:          clientCfg,
+		readerShutdown:     shutdown.New(),
+		writerShutdown:     shutdown.New(),
+		msgHandlerShutdown: shutdown.New(),
+		authSetter:         authSetter,
+	}
+	ctl.msgTransporter = transport.NewMessageTransporter(ctl.sendCh)
+	ctl.pm = proxy.NewManager(ctl.ctx, clientCfg, ctl.msgTransporter)
+
+	ctl.vm = visitor.NewManager(ctl.ctx, ctl.runID, ctl.clientCfg, ctl.connectServer, ctl.msgTransporter)
+	ctl.vm.Reload(visitorCfgs)
+	return ctl
+}
+
+func (ctl *Control) Run() {
+	go ctl.worker()
+
+	// start all proxies
+	ctl.pm.Reload(ctl.pxyCfgs)
+
+	// start all visitors
+	go ctl.vm.Run()
+}
+
+func (ctl *Control) HandleReqWorkConn(inMsg *msg.ReqWorkConn) {
+	xl := ctl.xl
+	workConn, err := ctl.connectServer()
+	if err != nil {
+		xl.Warn("start new connection to server error: %v", err)
+		return
+	}
+
+	m := &msg.NewWorkConn{
+		RunID: ctl.runID,
+	}
+	if err = ctl.authSetter.SetNewWorkConn(m); err != nil {
+		xl.Warn("error during NewWorkConn authentication: %v", err)
+		return
+	}
+	if err = msg.WriteMsg(workConn, m); err != nil {
+		xl.Warn("work connection write to server error: %v", err)
+		workConn.Close()
+		return
+	}
+
+	var startMsg msg.StartWorkConn
+	if err = msg.ReadMsgInto(workConn, &startMsg); err != nil {
+		xl.Trace("work connection closed before response StartWorkConn message: %v", err)
+		workConn.Close()
+		return
+	}
+	if startMsg.Error != "" {
+		xl.Error("StartWorkConn contains error: %s", startMsg.Error)
+		workConn.Close()
+		return
+	}
+
+	// dispatch this work connection to related proxy
+	ctl.pm.HandleWorkConn(startMsg.ProxyName, workConn, &startMsg)
+}
+
+func (ctl *Control) HandleNewProxyResp(inMsg *msg.NewProxyResp) {
+	xl := ctl.xl
+	// Server will return NewProxyResp message to each NewProxy message.
+	// Start a new proxy handler if no error got
+	err := ctl.pm.StartProxy(inMsg.ProxyName, inMsg.RemoteAddr, inMsg.Error)
+	if err != nil {
+		xl.Warn("[%s] start error: %v", inMsg.ProxyName, err)
+	} else {
+		xl.Info("[%s] start proxy success", inMsg.ProxyName)
+	}
+}
+
+func (ctl *Control) HandleNatHoleResp(inMsg *msg.NatHoleResp) {
+	xl := ctl.xl
+
+	// Dispatch the NatHoleResp message to the related proxy.
+	ok := ctl.msgTransporter.DispatchWithType(inMsg, msg.TypeNameNatHoleResp, inMsg.TransactionID)
+	if !ok {
+		xl.Trace("dispatch NatHoleResp message to related proxy error")
+	}
+}
+
+func (ctl *Control) Close() error {
+	return ctl.GracefulClose(0)
+}
+
+func (ctl *Control) GracefulClose(d time.Duration) error {
+	ctl.pm.Close()
+	ctl.vm.Close()
+
+	time.Sleep(d)
+
+	ctl.conn.Close()
+	ctl.cm.Close()
+	return nil
+}
+
+// ClosedDoneCh returns a channel that will be closed after all resources are released
+func (ctl *Control) ClosedDoneCh() <-chan struct{} {
+	return ctl.closedDoneCh
+}
+
+// connectServer return a new connection to frps
+func (ctl *Control) connectServer() (conn net.Conn, err error) {
+	return ctl.cm.Connect()
+}
+
+// reader read all messages from frps and send to readCh
+func (ctl *Control) reader() {
+	xl := ctl.xl
+	defer func() {
+		if err := recover(); err != nil {
+			xl.Error("panic error: %v", err)
+			xl.Error(string(debug.Stack()))
+		}
+	}()
+	defer ctl.readerShutdown.Done()
+	defer close(ctl.closedCh)
+
+	encReader := crypto.NewReader(ctl.conn, []byte(ctl.clientCfg.Token))
+	for {
+		m, err := msg.ReadMsg(encReader)
+		if err != nil {
+			if err == io.EOF {
+				xl.Debug("read from control connection EOF")
+				return
+			}
+			xl.Warn("read error: %v", err)
+			ctl.conn.Close()
+			return
+		}
+		ctl.readCh <- m
+	}
+}
+
+// writer writes messages got from sendCh to frps
+func (ctl *Control) writer() {
+	xl := ctl.xl
+	defer ctl.writerShutdown.Done()
+	encWriter, err := crypto.NewWriter(ctl.conn, []byte(ctl.clientCfg.Token))
+	if err != nil {
+		xl.Error("crypto new writer error: %v", err)
+		ctl.conn.Close()
+		return
+	}
+	for {
+		m, ok := <-ctl.sendCh
+		if !ok {
+			xl.Info("control writer is closing")
+			return
+		}
+
+		if err := msg.WriteMsg(encWriter, m); err != nil {
+			xl.Warn("write message to control connection error: %v", err)
+			return
+		}
+	}
+}
+
+// msgHandler handles all channel events and performs corresponding operations.
+func (ctl *Control) msgHandler() {
+	xl := ctl.xl
+	defer func() {
+		if err := recover(); err != nil {
+			xl.Error("panic error: %v", err)
+			xl.Error(string(debug.Stack()))
+		}
+	}()
+	defer ctl.msgHandlerShutdown.Done()
+
+	var hbSendCh <-chan time.Time
+	// TODO(fatedier): disable heartbeat if TCPMux is enabled.
+	// Just keep it here to keep compatible with old version frps.
+	if ctl.clientCfg.HeartbeatInterval > 0 {
+		hbSend := time.NewTicker(time.Duration(ctl.clientCfg.HeartbeatInterval) * time.Second)
+		defer hbSend.Stop()
+		hbSendCh = hbSend.C
+	}
+
+	var hbCheckCh <-chan time.Time
+	// Check heartbeat timeout only if TCPMux is not enabled and users don't disable heartbeat feature.
+	if ctl.clientCfg.HeartbeatInterval > 0 && ctl.clientCfg.HeartbeatTimeout > 0 && !ctl.clientCfg.TCPMux {
+		hbCheck := time.NewTicker(time.Second)
+		defer hbCheck.Stop()
+		hbCheckCh = hbCheck.C
+	}
+
+	ctl.lastPong = time.Now()
+	for {
+		select {
+		case <-hbSendCh:
+			// send heartbeat to server
+			xl.Debug("send heartbeat to server")
+			pingMsg := &msg.Ping{}
+			if err := ctl.authSetter.SetPing(pingMsg); err != nil {
+				xl.Warn("error during ping authentication: %v", err)
+				return
+			}
+			ctl.sendCh <- pingMsg
+		case <-hbCheckCh:
+			if time.Since(ctl.lastPong) > time.Duration(ctl.clientCfg.HeartbeatTimeout)*time.Second {
+				xl.Warn("heartbeat timeout")
+				// let reader() stop
+				ctl.conn.Close()
+				return
+			}
+		case rawMsg, ok := <-ctl.readCh:
+			if !ok {
+				return
+			}
+
+			switch m := rawMsg.(type) {
+			case *msg.ReqWorkConn:
+				go ctl.HandleReqWorkConn(m)
+			case *msg.NewProxyResp:
+				ctl.HandleNewProxyResp(m)
+			case *msg.NatHoleResp:
+				ctl.HandleNatHoleResp(m)
+			case *msg.Pong:
+				if m.Error != "" {
+					xl.Error("Pong contains error: %s", m.Error)
+					ctl.conn.Close()
+					return
+				}
+				ctl.lastPong = time.Now()
+				xl.Debug("receive heartbeat from server")
+			}
+		}
+	}
+}
+
+// If controler is notified by closedCh, reader and writer and handler will exit
+func (ctl *Control) worker() {
+	go ctl.msgHandler()
+	go ctl.reader()
+	go ctl.writer()
+
+	<-ctl.closedCh
+	// close related channels and wait until other goroutines done
+	close(ctl.readCh)
+	ctl.readerShutdown.WaitDone()
+	ctl.msgHandlerShutdown.WaitDone()
+
+	close(ctl.sendCh)
+	ctl.writerShutdown.WaitDone()
+
+	ctl.pm.Close()
+	ctl.vm.Close()
+
+	close(ctl.closedDoneCh)
+	ctl.cm.Close()
+}
+
+func (ctl *Control) ReloadConf(pxyCfgs map[string]config.ProxyConf, visitorCfgs map[string]config.VisitorConf) error {
+	ctl.vm.Reload(visitorCfgs)
+	ctl.pm.Reload(pxyCfgs)
+	return nil
+}

client/event/event.go

@@ -0,0 +1,19 @@
+package event
+
+import (
+	"errors"
+
+	"github.com/fatedier/frp/pkg/msg"
+)
+
+var ErrPayloadType = errors.New("error payload type")
+
+type Handler func(payload interface{}) error
+
+type StartProxyPayload struct {
+	NewProxyMsg *msg.NewProxy
+}
+
+type CloseProxyPayload struct {
+	CloseProxyMsg *msg.CloseProxy
+}

client/health/health.go

@@ -0,0 +1,168 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package health
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"net/http"
+	"time"
+
+	"github.com/fatedier/frp/pkg/util/xlog"
+)
+
+var ErrHealthCheckType = errors.New("error health check type")
+
+type Monitor struct {
+	checkType      string
+	interval       time.Duration
+	timeout        time.Duration
+	maxFailedTimes int
+
+	// For tcp
+	addr string
+
+	// For http
+	url string
+
+	failedTimes    uint64
+	statusOK       bool
+	statusNormalFn func()
+	statusFailedFn func()
+
+	ctx    context.Context
+	cancel context.CancelFunc
+}
+
+func NewMonitor(ctx context.Context, checkType string,
+	intervalS int, timeoutS int, maxFailedTimes int,
+	addr string, url string,
+	statusNormalFn func(), statusFailedFn func(),
+) *Monitor {
+	if intervalS <= 0 {
+		intervalS = 10
+	}
+	if timeoutS <= 0 {
+		timeoutS = 3
+	}
+	if maxFailedTimes <= 0 {
+		maxFailedTimes = 1
+	}
+	newctx, cancel := context.WithCancel(ctx)
+	return &Monitor{
+		checkType:      checkType,
+		interval:       time.Duration(intervalS) * time.Second,
+		timeout:        time.Duration(timeoutS) * time.Second,
+		maxFailedTimes: maxFailedTimes,
+		addr:           addr,
+		url:            url,
+		statusOK:       false,
+		statusNormalFn: statusNormalFn,
+		statusFailedFn: statusFailedFn,
+		ctx:            newctx,
+		cancel:         cancel,
+	}
+}
+
+func (monitor *Monitor) Start() {
+	go monitor.checkWorker()
+}
+
+func (monitor *Monitor) Stop() {
+	monitor.cancel()
+}
+
+func (monitor *Monitor) checkWorker() {
+	xl := xlog.FromContextSafe(monitor.ctx)
+	for {
+		doCtx, cancel := context.WithDeadline(monitor.ctx, time.Now().Add(monitor.timeout))
+		err := monitor.doCheck(doCtx)
+
+		// check if this monitor has been closed
+		select {
+		case <-monitor.ctx.Done():
+			cancel()
+			return
+		default:
+			cancel()
+		}
+
+		if err == nil {
+			xl.Trace("do one health check success")
+			if !monitor.statusOK && monitor.statusNormalFn != nil {
+				xl.Info("health check status change to success")
+				monitor.statusOK = true
+				monitor.statusNormalFn()
+			}
+		} else {
+			xl.Warn("do one health check failed: %v", err)
+			monitor.failedTimes++
+			if monitor.statusOK && int(monitor.failedTimes) >= monitor.maxFailedTimes && monitor.statusFailedFn != nil {
+				xl.Warn("health check status change to failed")
+				monitor.statusOK = false
+				monitor.statusFailedFn()
+			}
+		}
+
+		time.Sleep(monitor.interval)
+	}
+}
+
+func (monitor *Monitor) doCheck(ctx context.Context) error {
+	switch monitor.checkType {
+	case "tcp":
+		return monitor.doTCPCheck(ctx)
+	case "http":
+		return monitor.doHTTPCheck(ctx)
+	default:
+		return ErrHealthCheckType
+	}
+}
+
+func (monitor *Monitor) doTCPCheck(ctx context.Context) error {
+	// if tcp address is not specified, always return nil
+	if monitor.addr == "" {
+		return nil
+	}
+
+	var d net.Dialer
+	conn, err := d.DialContext(ctx, "tcp", monitor.addr)
+	if err != nil {
+		return err
+	}
+	conn.Close()
+	return nil
+}
+
+func (monitor *Monitor) doHTTPCheck(ctx context.Context) error {
+	req, err := http.NewRequestWithContext(ctx, "GET", monitor.url, nil)
+	if err != nil {
+		return err
+	}
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	_, _ = io.Copy(io.Discard, resp.Body)
+
+	if resp.StatusCode/100 != 2 {
+		return fmt.Errorf("do http health check, StatusCode is [%d] not 2xx", resp.StatusCode)
+	}
+	return nil
+}

client/proxy/general_tcp.go

@@ -0,0 +1,47 @@
+// Copyright 2023 The frp Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"reflect"
+
+	"github.com/fatedier/frp/pkg/config"
+)
+
+func init() {
+	pxyConfs := []config.ProxyConf{
+		&config.TCPProxyConf{},
+		&config.HTTPProxyConf{},
+		&config.HTTPSProxyConf{},
+		&config.STCPProxyConf{},
+		&config.TCPMuxProxyConf{},
+	}
+	for _, cfg := range pxyConfs {
+		RegisterProxyFactory(reflect.TypeOf(cfg), NewGeneralTCPProxy)
+	}
+}
+
+// GeneralTCPProxy is a general implementation of Proxy interface for TCP protocol.
+// If the default GeneralTCPProxy cannot meet the requirements, you can customize
+// the implementation of the Proxy interface.
+type GeneralTCPProxy struct {
+	*BaseProxy
+}
+
+func NewGeneralTCPProxy(baseProxy *BaseProxy, cfg config.ProxyConf) Proxy {
+	return &GeneralTCPProxy{
+		BaseProxy: baseProxy,
+	}
+}

client/proxy/proxy.go

@@ -0,0 +1,218 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"bytes"
+	"context"
+	"io"
+	"net"
+	"reflect"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	libio "github.com/fatedier/golib/io"
+	libdial "github.com/fatedier/golib/net/dial"
+	pp "github.com/pires/go-proxyproto"
+	"golang.org/x/time/rate"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/msg"
+	plugin "github.com/fatedier/frp/pkg/plugin/client"
+	"github.com/fatedier/frp/pkg/transport"
+	"github.com/fatedier/frp/pkg/util/limit"
+	"github.com/fatedier/frp/pkg/util/xlog"
+)
+
+var proxyFactoryRegistry = map[reflect.Type]func(*BaseProxy, config.ProxyConf) Proxy{}
+
+func RegisterProxyFactory(proxyConfType reflect.Type, factory func(*BaseProxy, config.ProxyConf) Proxy) {
+	proxyFactoryRegistry[proxyConfType] = factory
+}
+
+// Proxy defines how to handle work connections for different proxy type.
+type Proxy interface {
+	Run() error
+
+	// InWorkConn accept work connections registered to server.
+	InWorkConn(net.Conn, *msg.StartWorkConn)
+
+	Close()
+}
+
+func NewProxy(
+	ctx context.Context,
+	pxyConf config.ProxyConf,
+	clientCfg config.ClientCommonConf,
+	msgTransporter transport.MessageTransporter,
+) (pxy Proxy) {
+	var limiter *rate.Limiter
+	limitBytes := pxyConf.GetBaseConfig().BandwidthLimit.Bytes()
+	if limitBytes > 0 && pxyConf.GetBaseConfig().BandwidthLimitMode == config.BandwidthLimitModeClient {
+		limiter = rate.NewLimiter(rate.Limit(float64(limitBytes)), int(limitBytes))
+	}
+
+	baseProxy := BaseProxy{
+		baseProxyConfig: pxyConf.GetBaseConfig(),
+		clientCfg:       clientCfg,
+		limiter:         limiter,
+		msgTransporter:  msgTransporter,
+		xl:              xlog.FromContextSafe(ctx),
+		ctx:             ctx,
+	}
+
+	factory := proxyFactoryRegistry[reflect.TypeOf(pxyConf)]
+	if factory == nil {
+		return nil
+	}
+	return factory(&baseProxy, pxyConf)
+}
+
+type BaseProxy struct {
+	baseProxyConfig *config.BaseProxyConf
+	clientCfg       config.ClientCommonConf
+	msgTransporter  transport.MessageTransporter
+	limiter         *rate.Limiter
+	// proxyPlugin is used to handle connections instead of dialing to local service.
+	// It's only validate for TCP protocol now.
+	proxyPlugin plugin.Plugin
+
+	mu  sync.RWMutex
+	xl  *xlog.Logger
+	ctx context.Context
+}
+
+func (pxy *BaseProxy) Run() error {
+	if pxy.baseProxyConfig.Plugin != "" {
+		p, err := plugin.Create(pxy.baseProxyConfig.Plugin, pxy.baseProxyConfig.PluginParams)
+		if err != nil {
+			return err
+		}
+		pxy.proxyPlugin = p
+	}
+	return nil
+}
+
+func (pxy *BaseProxy) Close() {
+	if pxy.proxyPlugin != nil {
+		pxy.proxyPlugin.Close()
+	}
+}
+
+func (pxy *BaseProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
+	pxy.HandleTCPWorkConnection(conn, m, []byte(pxy.clientCfg.Token))
+}
+
+// Common handler for tcp work connections.
+func (pxy *BaseProxy) HandleTCPWorkConnection(workConn net.Conn, m *msg.StartWorkConn, encKey []byte) {
+	xl := pxy.xl
+	baseConfig := pxy.baseProxyConfig
+	var (
+		remote io.ReadWriteCloser
+		err    error
+	)
+	remote = workConn
+	if pxy.limiter != nil {
+		remote = libio.WrapReadWriteCloser(limit.NewReader(workConn, pxy.limiter), limit.NewWriter(workConn, pxy.limiter), func() error {
+			return workConn.Close()
+		})
+	}
+
+	xl.Trace("handle tcp work connection, use_encryption: %t, use_compression: %t",
+		baseConfig.UseEncryption, baseConfig.UseCompression)
+	if baseConfig.UseEncryption {
+		remote, err = libio.WithEncryption(remote, encKey)
+		if err != nil {
+			workConn.Close()
+			xl.Error("create encryption stream error: %v", err)
+			return
+		}
+	}
+	if baseConfig.UseCompression {
+		var releaseFn func()
+		remote, releaseFn = libio.WithCompressionFromPool(remote)
+		defer releaseFn()
+	}
+
+	// check if we need to send proxy protocol info
+	var extraInfo []byte
+	if baseConfig.ProxyProtocolVersion != "" {
+		if m.SrcAddr != "" && m.SrcPort != 0 {
+			if m.DstAddr == "" {
+				m.DstAddr = "127.0.0.1"
+			}
+			srcAddr, _ := net.ResolveTCPAddr("tcp", net.JoinHostPort(m.SrcAddr, strconv.Itoa(int(m.SrcPort))))
+			dstAddr, _ := net.ResolveTCPAddr("tcp", net.JoinHostPort(m.DstAddr, strconv.Itoa(int(m.DstPort))))
+			h := &pp.Header{
+				Command:         pp.PROXY,
+				SourceAddr:      srcAddr,
+				DestinationAddr: dstAddr,
+			}
+
+			if strings.Contains(m.SrcAddr, ".") {
+				h.TransportProtocol = pp.TCPv4
+			} else {
+				h.TransportProtocol = pp.TCPv6
+			}
+
+			if baseConfig.ProxyProtocolVersion == "v1" {
+				h.Version = 1
+			} else if baseConfig.ProxyProtocolVersion == "v2" {
+				h.Version = 2
+			}
+
+			buf := bytes.NewBuffer(nil)
+			_, _ = h.WriteTo(buf)
+			extraInfo = buf.Bytes()
+		}
+	}
+
+	if pxy.proxyPlugin != nil {
+		// if plugin is set, let plugin handle connection first
+		xl.Debug("handle by plugin: %s", pxy.proxyPlugin.Name())
+		pxy.proxyPlugin.Handle(remote, workConn, extraInfo)
+		xl.Debug("handle by plugin finished")
+		return
+	}
+
+	localConn, err := libdial.Dial(
+		net.JoinHostPort(baseConfig.LocalIP, strconv.Itoa(baseConfig.LocalPort)),
+		libdial.WithTimeout(10*time.Second),
+	)
+	if err != nil {
+		workConn.Close()
+		xl.Error("connect to local service [%s:%d] error: %v", baseConfig.LocalIP, baseConfig.LocalPort, err)
+		return
+	}
+
+	xl.Debug("join connections, localConn(l[%s] r[%s]) workConn(l[%s] r[%s])", localConn.LocalAddr().String(),
+		localConn.RemoteAddr().String(), workConn.LocalAddr().String(), workConn.RemoteAddr().String())
+
+	if len(extraInfo) > 0 {
+		if _, err := localConn.Write(extraInfo); err != nil {
+			workConn.Close()
+			xl.Error("write extraInfo to local conn error: %v", err)
+			return
+		}
+	}
+
+	_, _, errs := libio.Join(localConn, remote)
+	xl.Debug("join connections closed")
+	if len(errs) > 0 {
+		xl.Trace("join connections errors: %v", errs)
+	}
+}

client/proxy/proxy_manager.go

@@ -0,0 +1,152 @@
+// Copyright 2023 The frp Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"reflect"
+	"sync"
+
+	"github.com/fatedier/frp/client/event"
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/msg"
+	"github.com/fatedier/frp/pkg/transport"
+	"github.com/fatedier/frp/pkg/util/xlog"
+)
+
+type Manager struct {
+	proxies        map[string]*Wrapper
+	msgTransporter transport.MessageTransporter
+
+	closed bool
+	mu     sync.RWMutex
+
+	clientCfg config.ClientCommonConf
+
+	ctx context.Context
+}
+
+func NewManager(
+	ctx context.Context,
+	clientCfg config.ClientCommonConf,
+	msgTransporter transport.MessageTransporter,
+) *Manager {
+	return &Manager{
+		proxies:        make(map[string]*Wrapper),
+		msgTransporter: msgTransporter,
+		closed:         false,
+		clientCfg:      clientCfg,
+		ctx:            ctx,
+	}
+}
+
+func (pm *Manager) StartProxy(name string, remoteAddr string, serverRespErr string) error {
+	pm.mu.RLock()
+	pxy, ok := pm.proxies[name]
+	pm.mu.RUnlock()
+	if !ok {
+		return fmt.Errorf("proxy [%s] not found", name)
+	}
+
+	err := pxy.SetRunningStatus(remoteAddr, serverRespErr)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (pm *Manager) Close() {
+	pm.mu.Lock()
+	defer pm.mu.Unlock()
+	for _, pxy := range pm.proxies {
+		pxy.Stop()
+	}
+	pm.proxies = make(map[string]*Wrapper)
+}
+
+func (pm *Manager) HandleWorkConn(name string, workConn net.Conn, m *msg.StartWorkConn) {
+	pm.mu.RLock()
+	pw, ok := pm.proxies[name]
+	pm.mu.RUnlock()
+	if ok {
+		pw.InWorkConn(workConn, m)
+	} else {
+		workConn.Close()
+	}
+}
+
+func (pm *Manager) HandleEvent(payload interface{}) error {
+	var m msg.Message
+	switch e := payload.(type) {
+	case *event.StartProxyPayload:
+		m = e.NewProxyMsg
+	case *event.CloseProxyPayload:
+		m = e.CloseProxyMsg
+	default:
+		return event.ErrPayloadType
+	}
+
+	return pm.msgTransporter.Send(m)
+}
+
+func (pm *Manager) GetAllProxyStatus() []*WorkingStatus {
+	ps := make([]*WorkingStatus, 0)
+	pm.mu.RLock()
+	defer pm.mu.RUnlock()
+	for _, pxy := range pm.proxies {
+		ps = append(ps, pxy.GetStatus())
+	}
+	return ps
+}
+
+func (pm *Manager) Reload(pxyCfgs map[string]config.ProxyConf) {
+	xl := xlog.FromContextSafe(pm.ctx)
+	pm.mu.Lock()
+	defer pm.mu.Unlock()
+
+	delPxyNames := make([]string, 0)
+	for name, pxy := range pm.proxies {
+		del := false
+		cfg, ok := pxyCfgs[name]
+		if !ok || !reflect.DeepEqual(pxy.Cfg, cfg) {
+			del = true
+		}
+
+		if del {
+			delPxyNames = append(delPxyNames, name)
+			delete(pm.proxies, name)
+			pxy.Stop()
+		}
+	}
+	if len(delPxyNames) > 0 {
+		xl.Info("proxy removed: %s", delPxyNames)
+	}
+
+	addPxyNames := make([]string, 0)
+	for name, cfg := range pxyCfgs {
+		if _, ok := pm.proxies[name]; !ok {
+			pxy := NewWrapper(pm.ctx, cfg, pm.clientCfg, pm.HandleEvent, pm.msgTransporter)
+			pm.proxies[name] = pxy
+			addPxyNames = append(addPxyNames, name)
+
+			pxy.Start()
+		}
+	}
+	if len(addPxyNames) > 0 {
+		xl.Info("proxy added: %s", addPxyNames)
+	}
+}

client/proxy/proxy_wrapper.go

@@ -0,0 +1,274 @@
+// Copyright 2023 The frp Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/fatedier/golib/errors"
+
+	"github.com/fatedier/frp/client/event"
+	"github.com/fatedier/frp/client/health"
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/msg"
+	"github.com/fatedier/frp/pkg/transport"
+	"github.com/fatedier/frp/pkg/util/xlog"
+)
+
+const (
+	ProxyPhaseNew         = "new"
+	ProxyPhaseWaitStart   = "wait start"
+	ProxyPhaseStartErr    = "start error"
+	ProxyPhaseRunning     = "running"
+	ProxyPhaseCheckFailed = "check failed"
+	ProxyPhaseClosed      = "closed"
+)
+
+var (
+	statusCheckInterval = 3 * time.Second
+	waitResponseTimeout = 20 * time.Second
+	startErrTimeout     = 30 * time.Second
+)
+
+type WorkingStatus struct {
+	Name  string           `json:"name"`
+	Type  string           `json:"type"`
+	Phase string           `json:"status"`
+	Err   string           `json:"err"`
+	Cfg   config.ProxyConf `json:"cfg"`
+
+	// Got from server.
+	RemoteAddr string `json:"remote_addr"`
+}
+
+type Wrapper struct {
+	WorkingStatus
+
+	// underlying proxy
+	pxy Proxy
+
+	// if ProxyConf has healcheck config
+	// monitor will watch if it is alive
+	monitor *health.Monitor
+
+	// event handler
+	handler event.Handler
+
+	msgTransporter transport.MessageTransporter
+
+	health           uint32
+	lastSendStartMsg time.Time
+	lastStartErr     time.Time
+	closeCh          chan struct{}
+	healthNotifyCh   chan struct{}
+	mu               sync.RWMutex
+
+	xl  *xlog.Logger
+	ctx context.Context
+}
+
+func NewWrapper(
+	ctx context.Context,
+	cfg config.ProxyConf,
+	clientCfg config.ClientCommonConf,
+	eventHandler event.Handler,
+	msgTransporter transport.MessageTransporter,
+) *Wrapper {
+	baseInfo := cfg.GetBaseConfig()
+	xl := xlog.FromContextSafe(ctx).Spawn().AppendPrefix(baseInfo.ProxyName)
+	pw := &Wrapper{
+		WorkingStatus: WorkingStatus{
+			Name:  baseInfo.ProxyName,
+			Type:  baseInfo.ProxyType,
+			Phase: ProxyPhaseNew,
+			Cfg:   cfg,
+		},
+		closeCh:        make(chan struct{}),
+		healthNotifyCh: make(chan struct{}),
+		handler:        eventHandler,
+		msgTransporter: msgTransporter,
+		xl:             xl,
+		ctx:            xlog.NewContext(ctx, xl),
+	}
+
+	if baseInfo.HealthCheckType != "" {
+		pw.health = 1 // means failed
+		pw.monitor = health.NewMonitor(pw.ctx, baseInfo.HealthCheckType, baseInfo.HealthCheckIntervalS,
+			baseInfo.HealthCheckTimeoutS, baseInfo.HealthCheckMaxFailed, baseInfo.HealthCheckAddr,
+			baseInfo.HealthCheckURL, pw.statusNormalCallback, pw.statusFailedCallback)
+		xl.Trace("enable health check monitor")
+	}
+
+	pw.pxy = NewProxy(pw.ctx, pw.Cfg, clientCfg, pw.msgTransporter)
+	return pw
+}
+
+func (pw *Wrapper) SetRunningStatus(remoteAddr string, respErr string) error {
+	pw.mu.Lock()
+	defer pw.mu.Unlock()
+	if pw.Phase != ProxyPhaseWaitStart {
+		return fmt.Errorf("status not wait start, ignore start message")
+	}
+
+	pw.RemoteAddr = remoteAddr
+	if respErr != "" {
+		pw.Phase = ProxyPhaseStartErr
+		pw.Err = respErr
+		pw.lastStartErr = time.Now()
+		return fmt.Errorf(pw.Err)
+	}
+
+	if err := pw.pxy.Run(); err != nil {
+		pw.close()
+		pw.Phase = ProxyPhaseStartErr
+		pw.Err = err.Error()
+		pw.lastStartErr = time.Now()
+		return err
+	}
+
+	pw.Phase = ProxyPhaseRunning
+	pw.Err = ""
+	return nil
+}
+
+func (pw *Wrapper) Start() {
+	go pw.checkWorker()
+	if pw.monitor != nil {
+		go pw.monitor.Start()
+	}
+}
+
+func (pw *Wrapper) Stop() {
+	pw.mu.Lock()
+	defer pw.mu.Unlock()
+	close(pw.closeCh)
+	close(pw.healthNotifyCh)
+	pw.pxy.Close()
+	if pw.monitor != nil {
+		pw.monitor.Stop()
+	}
+	pw.Phase = ProxyPhaseClosed
+	pw.close()
+}
+
+func (pw *Wrapper) close() {
+	_ = pw.handler(&event.CloseProxyPayload{
+		CloseProxyMsg: &msg.CloseProxy{
+			ProxyName: pw.Name,
+		},
+	})
+}
+
+func (pw *Wrapper) checkWorker() {
+	xl := pw.xl
+	if pw.monitor != nil {
+		// let monitor do check request first
+		time.Sleep(500 * time.Millisecond)
+	}
+	for {
+		// check proxy status
+		now := time.Now()
+		if atomic.LoadUint32(&pw.health) == 0 {
+			pw.mu.Lock()
+			if pw.Phase == ProxyPhaseNew ||
+				pw.Phase == ProxyPhaseCheckFailed ||
+				(pw.Phase == ProxyPhaseWaitStart && now.After(pw.lastSendStartMsg.Add(waitResponseTimeout))) ||
+				(pw.Phase == ProxyPhaseStartErr && now.After(pw.lastStartErr.Add(startErrTimeout))) {
+
+				xl.Trace("change status from [%s] to [%s]", pw.Phase, ProxyPhaseWaitStart)
+				pw.Phase = ProxyPhaseWaitStart
+
+				var newProxyMsg msg.NewProxy
+				pw.Cfg.MarshalToMsg(&newProxyMsg)
+				pw.lastSendStartMsg = now
+				_ = pw.handler(&event.StartProxyPayload{
+					NewProxyMsg: &newProxyMsg,
+				})
+			}
+			pw.mu.Unlock()
+		} else {
+			pw.mu.Lock()
+			if pw.Phase == ProxyPhaseRunning || pw.Phase == ProxyPhaseWaitStart {
+				pw.close()
+				xl.Trace("change status from [%s] to [%s]", pw.Phase, ProxyPhaseCheckFailed)
+				pw.Phase = ProxyPhaseCheckFailed
+			}
+			pw.mu.Unlock()
+		}
+
+		select {
+		case <-pw.closeCh:
+			return
+		case <-time.After(statusCheckInterval):
+		case <-pw.healthNotifyCh:
+		}
+	}
+}
+
+func (pw *Wrapper) statusNormalCallback() {
+	xl := pw.xl
+	atomic.StoreUint32(&pw.health, 0)
+	_ = errors.PanicToError(func() {
+		select {
+		case pw.healthNotifyCh <- struct{}{}:
+		default:
+		}
+	})
+	xl.Info("health check success")
+}
+
+func (pw *Wrapper) statusFailedCallback() {
+	xl := pw.xl
+	atomic.StoreUint32(&pw.health, 1)
+	_ = errors.PanicToError(func() {
+		select {
+		case pw.healthNotifyCh <- struct{}{}:
+		default:
+		}
+	})
+	xl.Info("health check failed")
+}
+
+func (pw *Wrapper) InWorkConn(workConn net.Conn, m *msg.StartWorkConn) {
+	xl := pw.xl
+	pw.mu.RLock()
+	pxy := pw.pxy
+	pw.mu.RUnlock()
+	if pxy != nil && pw.Phase == ProxyPhaseRunning {
+		xl.Debug("start a new work connection, localAddr: %s remoteAddr: %s", workConn.LocalAddr().String(), workConn.RemoteAddr().String())
+		go pxy.InWorkConn(workConn, m)
+	} else {
+		workConn.Close()
+	}
+}
+
+func (pw *Wrapper) GetStatus() *WorkingStatus {
+	pw.mu.RLock()
+	defer pw.mu.RUnlock()
+	ps := &WorkingStatus{
+		Name:       pw.Name,
+		Type:       pw.Type,
+		Phase:      pw.Phase,
+		Err:        pw.Err,
+		Cfg:        pw.Cfg,
+		RemoteAddr: pw.RemoteAddr,
+	}
+	return ps
+}

client/proxy/sudp.go

@@ -0,0 +1,209 @@
+// Copyright 2023 The frp Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"io"
+	"net"
+	"reflect"
+	"strconv"
+	"sync"
+	"time"
+
+	"github.com/fatedier/golib/errors"
+	libio "github.com/fatedier/golib/io"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/msg"
+	"github.com/fatedier/frp/pkg/proto/udp"
+	"github.com/fatedier/frp/pkg/util/limit"
+	utilnet "github.com/fatedier/frp/pkg/util/net"
+)
+
+func init() {
+	RegisterProxyFactory(reflect.TypeOf(&config.SUDPProxyConf{}), NewSUDPProxy)
+}
+
+type SUDPProxy struct {
+	*BaseProxy
+
+	cfg *config.SUDPProxyConf
+
+	localAddr *net.UDPAddr
+
+	closeCh chan struct{}
+}
+
+func NewSUDPProxy(baseProxy *BaseProxy, cfg config.ProxyConf) Proxy {
+	unwrapped, ok := cfg.(*config.SUDPProxyConf)
+	if !ok {
+		return nil
+	}
+	return &SUDPProxy{
+		BaseProxy: baseProxy,
+		cfg:       unwrapped,
+		closeCh:   make(chan struct{}),
+	}
+}
+
+func (pxy *SUDPProxy) Run() (err error) {
+	pxy.localAddr, err = net.ResolveUDPAddr("udp", net.JoinHostPort(pxy.cfg.LocalIP, strconv.Itoa(pxy.cfg.LocalPort)))
+	if err != nil {
+		return
+	}
+	return
+}
+
+func (pxy *SUDPProxy) Close() {
+	pxy.mu.Lock()
+	defer pxy.mu.Unlock()
+	select {
+	case <-pxy.closeCh:
+		return
+	default:
+		close(pxy.closeCh)
+	}
+}
+
+func (pxy *SUDPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
+	xl := pxy.xl
+	xl.Info("incoming a new work connection for sudp proxy, %s", conn.RemoteAddr().String())
+
+	var rwc io.ReadWriteCloser = conn
+	var err error
+	if pxy.limiter != nil {
+		rwc = libio.WrapReadWriteCloser(limit.NewReader(conn, pxy.limiter), limit.NewWriter(conn, pxy.limiter), func() error {
+			return conn.Close()
+		})
+	}
+	if pxy.cfg.UseEncryption {
+		rwc, err = libio.WithEncryption(rwc, []byte(pxy.clientCfg.Token))
+		if err != nil {
+			conn.Close()
+			xl.Error("create encryption stream error: %v", err)
+			return
+		}
+	}
+	if pxy.cfg.UseCompression {
+		var releaseFn func()
+		rwc, releaseFn = libio.WithCompressionFromPool(rwc)
+		defer releaseFn()
+	}
+	conn = utilnet.WrapReadWriteCloserToConn(rwc, conn)
+
+	workConn := conn
+	readCh := make(chan *msg.UDPPacket, 1024)
+	sendCh := make(chan msg.Message, 1024)
+	isClose := false
+
+	mu := &sync.Mutex{}
+
+	closeFn := func() {
+		mu.Lock()
+		defer mu.Unlock()
+		if isClose {
+			return
+		}
+
+		isClose = true
+		if workConn != nil {
+			workConn.Close()
+		}
+		close(readCh)
+		close(sendCh)
+	}
+
+	// udp service <- frpc <- frps <- frpc visitor <- user
+	workConnReaderFn := func(conn net.Conn, readCh chan *msg.UDPPacket) {
+		defer closeFn()
+
+		for {
+			// first to check sudp proxy is closed or not
+			select {
+			case <-pxy.closeCh:
+				xl.Trace("frpc sudp proxy is closed")
+				return
+			default:
+			}
+
+			var udpMsg msg.UDPPacket
+			if errRet := msg.ReadMsgInto(conn, &udpMsg); errRet != nil {
+				xl.Warn("read from workConn for sudp error: %v", errRet)
+				return
+			}
+
+			if errRet := errors.PanicToError(func() {
+				readCh <- &udpMsg
+			}); errRet != nil {
+				xl.Warn("reader goroutine for sudp work connection closed: %v", errRet)
+				return
+			}
+		}
+	}
+
+	// udp service -> frpc -> frps -> frpc visitor -> user
+	workConnSenderFn := func(conn net.Conn, sendCh chan msg.Message) {
+		defer func() {
+			closeFn()
+			xl.Info("writer goroutine for sudp work connection closed")
+		}()
+
+		var errRet error
+		for rawMsg := range sendCh {
+			switch m := rawMsg.(type) {
+			case *msg.UDPPacket:
+				xl.Trace("frpc send udp package to frpc visitor, [udp local: %v, remote: %v], [tcp work conn local: %v, remote: %v]",
+					m.LocalAddr.String(), m.RemoteAddr.String(), conn.LocalAddr().String(), conn.RemoteAddr().String())
+			case *msg.Ping:
+				xl.Trace("frpc send ping message to frpc visitor")
+			}
+
+			if errRet = msg.WriteMsg(conn, rawMsg); errRet != nil {
+				xl.Error("sudp work write error: %v", errRet)
+				return
+			}
+		}
+	}
+
+	heartbeatFn := func(sendCh chan msg.Message) {
+		ticker := time.NewTicker(30 * time.Second)
+		defer func() {
+			ticker.Stop()
+			closeFn()
+		}()
+
+		var errRet error
+		for {
+			select {
+			case <-ticker.C:
+				if errRet = errors.PanicToError(func() {
+					sendCh <- &msg.Ping{}
+				}); errRet != nil {
+					xl.Warn("heartbeat goroutine for sudp work connection closed")
+					return
+				}
+			case <-pxy.closeCh:
+				xl.Trace("frpc sudp proxy is closed")
+				return
+			}
+		}
+	}
+
+	go workConnSenderFn(workConn, sendCh)
+	go workConnReaderFn(workConn, readCh)
+	go heartbeatFn(sendCh)
+
+	udp.Forwarder(pxy.localAddr, readCh, sendCh, int(pxy.clientCfg.UDPPacketSize))
+}

client/proxy/udp.go

@@ -0,0 +1,175 @@
+// Copyright 2023 The frp Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"io"
+	"net"
+	"reflect"
+	"strconv"
+	"time"
+
+	"github.com/fatedier/golib/errors"
+	libio "github.com/fatedier/golib/io"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/msg"
+	"github.com/fatedier/frp/pkg/proto/udp"
+	"github.com/fatedier/frp/pkg/util/limit"
+	utilnet "github.com/fatedier/frp/pkg/util/net"
+)
+
+func init() {
+	RegisterProxyFactory(reflect.TypeOf(&config.UDPProxyConf{}), NewUDPProxy)
+}
+
+type UDPProxy struct {
+	*BaseProxy
+
+	cfg *config.UDPProxyConf
+
+	localAddr *net.UDPAddr
+	readCh    chan *msg.UDPPacket
+
+	// include msg.UDPPacket and msg.Ping
+	sendCh   chan msg.Message
+	workConn net.Conn
+	closed   bool
+}
+
+func NewUDPProxy(baseProxy *BaseProxy, cfg config.ProxyConf) Proxy {
+	unwrapped, ok := cfg.(*config.UDPProxyConf)
+	if !ok {
+		return nil
+	}
+	return &UDPProxy{
+		BaseProxy: baseProxy,
+		cfg:       unwrapped,
+	}
+}
+
+func (pxy *UDPProxy) Run() (err error) {
+	pxy.localAddr, err = net.ResolveUDPAddr("udp", net.JoinHostPort(pxy.cfg.LocalIP, strconv.Itoa(pxy.cfg.LocalPort)))
+	if err != nil {
+		return
+	}
+	return
+}
+
+func (pxy *UDPProxy) Close() {
+	pxy.mu.Lock()
+	defer pxy.mu.Unlock()
+
+	if !pxy.closed {
+		pxy.closed = true
+		if pxy.workConn != nil {
+			pxy.workConn.Close()
+		}
+		if pxy.readCh != nil {
+			close(pxy.readCh)
+		}
+		if pxy.sendCh != nil {
+			close(pxy.sendCh)
+		}
+	}
+}
+
+func (pxy *UDPProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
+	xl := pxy.xl
+	xl.Info("incoming a new work connection for udp proxy, %s", conn.RemoteAddr().String())
+	// close resources releated with old workConn
+	pxy.Close()
+
+	var rwc io.ReadWriteCloser = conn
+	var err error
+	if pxy.limiter != nil {
+		rwc = libio.WrapReadWriteCloser(limit.NewReader(conn, pxy.limiter), limit.NewWriter(conn, pxy.limiter), func() error {
+			return conn.Close()
+		})
+	}
+	if pxy.cfg.UseEncryption {
+		rwc, err = libio.WithEncryption(rwc, []byte(pxy.clientCfg.Token))
+		if err != nil {
+			conn.Close()
+			xl.Error("create encryption stream error: %v", err)
+			return
+		}
+	}
+	if pxy.cfg.UseCompression {
+		var releaseFn func()
+		rwc, releaseFn = libio.WithCompressionFromPool(rwc)
+		defer releaseFn()
+	}
+	conn = utilnet.WrapReadWriteCloserToConn(rwc, conn)
+
+	pxy.mu.Lock()
+	pxy.workConn = conn
+	pxy.readCh = make(chan *msg.UDPPacket, 1024)
+	pxy.sendCh = make(chan msg.Message, 1024)
+	pxy.closed = false
+	pxy.mu.Unlock()
+
+	workConnReaderFn := func(conn net.Conn, readCh chan *msg.UDPPacket) {
+		for {
+			var udpMsg msg.UDPPacket
+			if errRet := msg.ReadMsgInto(conn, &udpMsg); errRet != nil {
+				xl.Warn("read from workConn for udp error: %v", errRet)
+				return
+			}
+			if errRet := errors.PanicToError(func() {
+				xl.Trace("get udp package from workConn: %s", udpMsg.Content)
+				readCh <- &udpMsg
+			}); errRet != nil {
+				xl.Info("reader goroutine for udp work connection closed: %v", errRet)
+				return
+			}
+		}
+	}
+	workConnSenderFn := func(conn net.Conn, sendCh chan msg.Message) {
+		defer func() {
+			xl.Info("writer goroutine for udp work connection closed")
+		}()
+		var errRet error
+		for rawMsg := range sendCh {
+			switch m := rawMsg.(type) {
+			case *msg.UDPPacket:
+				xl.Trace("send udp package to workConn: %s", m.Content)
+			case *msg.Ping:
+				xl.Trace("send ping message to udp workConn")
+			}
+			if errRet = msg.WriteMsg(conn, rawMsg); errRet != nil {
+				xl.Error("udp work write error: %v", errRet)
+				return
+			}
+		}
+	}
+	heartbeatFn := func(sendCh chan msg.Message) {
+		var errRet error
+		for {
+			time.Sleep(time.Duration(30) * time.Second)
+			if errRet = errors.PanicToError(func() {
+				sendCh <- &msg.Ping{}
+			}); errRet != nil {
+				xl.Trace("heartbeat goroutine for udp work connection closed")
+				break
+			}
+		}
+	}
+
+	go workConnSenderFn(pxy.workConn, pxy.sendCh)
+	go workConnReaderFn(pxy.workConn, pxy.readCh)
+	go heartbeatFn(pxy.sendCh)
+	udp.Forwarder(pxy.localAddr, pxy.readCh, pxy.sendCh, int(pxy.clientCfg.UDPPacketSize))
+}

client/proxy/xtcp.go

@@ -0,0 +1,197 @@
+// Copyright 2023 The frp Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"io"
+	"net"
+	"reflect"
+	"time"
+
+	fmux "github.com/hashicorp/yamux"
+	"github.com/quic-go/quic-go"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/msg"
+	"github.com/fatedier/frp/pkg/nathole"
+	"github.com/fatedier/frp/pkg/transport"
+	utilnet "github.com/fatedier/frp/pkg/util/net"
+)
+
+func init() {
+	RegisterProxyFactory(reflect.TypeOf(&config.XTCPProxyConf{}), NewXTCPProxy)
+}
+
+type XTCPProxy struct {
+	*BaseProxy
+
+	cfg *config.XTCPProxyConf
+}
+
+func NewXTCPProxy(baseProxy *BaseProxy, cfg config.ProxyConf) Proxy {
+	unwrapped, ok := cfg.(*config.XTCPProxyConf)
+	if !ok {
+		return nil
+	}
+	return &XTCPProxy{
+		BaseProxy: baseProxy,
+		cfg:       unwrapped,
+	}
+}
+
+func (pxy *XTCPProxy) InWorkConn(conn net.Conn, startWorkConnMsg *msg.StartWorkConn) {
+	xl := pxy.xl
+	defer conn.Close()
+	var natHoleSidMsg msg.NatHoleSid
+	err := msg.ReadMsgInto(conn, &natHoleSidMsg)
+	if err != nil {
+		xl.Error("xtcp read from workConn error: %v", err)
+		return
+	}
+
+	xl.Trace("nathole prepare start")
+	prepareResult, err := nathole.Prepare([]string{pxy.clientCfg.NatHoleSTUNServer})
+	if err != nil {
+		xl.Warn("nathole prepare error: %v", err)
+		return
+	}
+	xl.Info("nathole prepare success, nat type: %s, behavior: %s, addresses: %v, assistedAddresses: %v",
+		prepareResult.NatType, prepareResult.Behavior, prepareResult.Addrs, prepareResult.AssistedAddrs)
+	defer prepareResult.ListenConn.Close()
+
+	// send NatHoleClient msg to server
+	transactionID := nathole.NewTransactionID()
+	natHoleClientMsg := &msg.NatHoleClient{
+		TransactionID: transactionID,
+		ProxyName:     pxy.cfg.ProxyName,
+		Sid:           natHoleSidMsg.Sid,
+		MappedAddrs:   prepareResult.Addrs,
+		AssistedAddrs: prepareResult.AssistedAddrs,
+	}
+
+	xl.Trace("nathole exchange info start")
+	natHoleRespMsg, err := nathole.ExchangeInfo(pxy.ctx, pxy.msgTransporter, transactionID, natHoleClientMsg, 5*time.Second)
+	if err != nil {
+		xl.Warn("nathole exchange info error: %v", err)
+		return
+	}
+
+	xl.Info("get natHoleRespMsg, sid [%s], protocol [%s], candidate address %v, assisted address %v, detectBehavior: %+v",
+		natHoleRespMsg.Sid, natHoleRespMsg.Protocol, natHoleRespMsg.CandidateAddrs,
+		natHoleRespMsg.AssistedAddrs, natHoleRespMsg.DetectBehavior)
+
+	listenConn := prepareResult.ListenConn
+	newListenConn, raddr, err := nathole.MakeHole(pxy.ctx, listenConn, natHoleRespMsg, []byte(pxy.cfg.Sk))
+	if err != nil {
+		listenConn.Close()
+		xl.Warn("make hole error: %v", err)
+		_ = pxy.msgTransporter.Send(&msg.NatHoleReport{
+			Sid:     natHoleRespMsg.Sid,
+			Success: false,
+		})
+		return
+	}
+	listenConn = newListenConn
+	xl.Info("establishing nat hole connection successful, sid [%s], remoteAddr [%s]", natHoleRespMsg.Sid, raddr)
+
+	_ = pxy.msgTransporter.Send(&msg.NatHoleReport{
+		Sid:     natHoleRespMsg.Sid,
+		Success: true,
+	})
+
+	if natHoleRespMsg.Protocol == "kcp" {
+		pxy.listenByKCP(listenConn, raddr, startWorkConnMsg)
+		return
+	}
+
+	// default is quic
+	pxy.listenByQUIC(listenConn, raddr, startWorkConnMsg)
+}
+
+func (pxy *XTCPProxy) listenByKCP(listenConn *net.UDPConn, raddr *net.UDPAddr, startWorkConnMsg *msg.StartWorkConn) {
+	xl := pxy.xl
+	listenConn.Close()
+	laddr, _ := net.ResolveUDPAddr("udp", listenConn.LocalAddr().String())
+	lConn, err := net.DialUDP("udp", laddr, raddr)
+	if err != nil {
+		xl.Warn("dial udp error: %v", err)
+		return
+	}
+	defer lConn.Close()
+
+	remote, err := utilnet.NewKCPConnFromUDP(lConn, true, raddr.String())
+	if err != nil {
+		xl.Warn("create kcp connection from udp connection error: %v", err)
+		return
+	}
+
+	fmuxCfg := fmux.DefaultConfig()
+	fmuxCfg.KeepAliveInterval = 10 * time.Second
+	fmuxCfg.MaxStreamWindowSize = 6 * 1024 * 1024
+	fmuxCfg.LogOutput = io.Discard
+	session, err := fmux.Server(remote, fmuxCfg)
+	if err != nil {
+		xl.Error("create mux session error: %v", err)
+		return
+	}
+	defer session.Close()
+
+	for {
+		muxConn, err := session.Accept()
+		if err != nil {
+			xl.Error("accept connection error: %v", err)
+			return
+		}
+		go pxy.HandleTCPWorkConnection(muxConn, startWorkConnMsg, []byte(pxy.cfg.Sk))
+	}
+}
+
+func (pxy *XTCPProxy) listenByQUIC(listenConn *net.UDPConn, _ *net.UDPAddr, startWorkConnMsg *msg.StartWorkConn) {
+	xl := pxy.xl
+	defer listenConn.Close()
+
+	tlsConfig, err := transport.NewServerTLSConfig("", "", "")
+	if err != nil {
+		xl.Warn("create tls config error: %v", err)
+		return
+	}
+	tlsConfig.NextProtos = []string{"frp"}
+	quicListener, err := quic.Listen(listenConn, tlsConfig,
+		&quic.Config{
+			MaxIdleTimeout:     time.Duration(pxy.clientCfg.QUICMaxIdleTimeout) * time.Second,
+			MaxIncomingStreams: int64(pxy.clientCfg.QUICMaxIncomingStreams),
+			KeepAlivePeriod:    time.Duration(pxy.clientCfg.QUICKeepalivePeriod) * time.Second,
+		},
+	)
+	if err != nil {
+		xl.Warn("dial quic error: %v", err)
+		return
+	}
+	// only accept one connection from raddr
+	c, err := quicListener.Accept(pxy.ctx)
+	if err != nil {
+		xl.Error("quic accept connection error: %v", err)
+		return
+	}
+	for {
+		stream, err := c.AcceptStream(pxy.ctx)
+		if err != nil {
+			xl.Debug("quic accept stream error: %v", err)
+			_ = c.CloseWithError(0, "")
+			return
+		}
+		go pxy.HandleTCPWorkConnection(utilnet.QuicStreamToNetConn(stream, c), startWorkConnMsg, []byte(pxy.cfg.Sk))
+	}
+}

client/service.go

@@ -0,0 +1,510 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package client
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"io"
+	"math/rand"
+	"net"
+	"runtime"
+	"strconv"
+	"strings"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/fatedier/golib/crypto"
+	libdial "github.com/fatedier/golib/net/dial"
+	fmux "github.com/hashicorp/yamux"
+	quic "github.com/quic-go/quic-go"
+
+	"github.com/fatedier/frp/assets"
+	"github.com/fatedier/frp/pkg/auth"
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/msg"
+	"github.com/fatedier/frp/pkg/transport"
+	"github.com/fatedier/frp/pkg/util/log"
+	utilnet "github.com/fatedier/frp/pkg/util/net"
+	"github.com/fatedier/frp/pkg/util/util"
+	"github.com/fatedier/frp/pkg/util/version"
+	"github.com/fatedier/frp/pkg/util/xlog"
+)
+
+func init() {
+	crypto.DefaultSalt = "frp"
+	// TODO: remove this when we drop support for go1.19
+	rand.Seed(time.Now().UnixNano())
+}
+
+// Service is a client service.
+type Service struct {
+	// uniq id got from frps, attach it in loginMsg
+	runID string
+
+	// manager control connection with server
+	ctl   *Control
+	ctlMu sync.RWMutex
+
+	// Sets authentication based on selected method
+	authSetter auth.Setter
+
+	cfg         config.ClientCommonConf
+	pxyCfgs     map[string]config.ProxyConf
+	visitorCfgs map[string]config.VisitorConf
+	cfgMu       sync.RWMutex
+
+	// The configuration file used to initialize this client, or an empty
+	// string if no configuration file was used.
+	cfgFile string
+
+	exit uint32 // 0 means not exit
+
+	// service context
+	ctx context.Context
+	// call cancel to stop service
+	cancel context.CancelFunc
+}
+
+func NewService(
+	cfg config.ClientCommonConf,
+	pxyCfgs map[string]config.ProxyConf,
+	visitorCfgs map[string]config.VisitorConf,
+	cfgFile string,
+) (svr *Service, err error) {
+	svr = &Service{
+		authSetter:  auth.NewAuthSetter(cfg.ClientConfig),
+		cfg:         cfg,
+		cfgFile:     cfgFile,
+		pxyCfgs:     pxyCfgs,
+		visitorCfgs: visitorCfgs,
+		ctx:         context.Background(),
+		exit:        0,
+	}
+	return
+}
+
+func (svr *Service) GetController() *Control {
+	svr.ctlMu.RLock()
+	defer svr.ctlMu.RUnlock()
+	return svr.ctl
+}
+
+func (svr *Service) Run(ctx context.Context) error {
+	ctx, cancel := context.WithCancel(ctx)
+	svr.ctx = xlog.NewContext(ctx, xlog.New())
+	svr.cancel = cancel
+
+	xl := xlog.FromContextSafe(svr.ctx)
+
+	// set custom DNSServer
+	if svr.cfg.DNSServer != "" {
+		dnsAddr := svr.cfg.DNSServer
+		if _, _, err := net.SplitHostPort(dnsAddr); err != nil {
+			dnsAddr = net.JoinHostPort(dnsAddr, "53")
+		}
+		// Change default dns server for frpc
+		net.DefaultResolver = &net.Resolver{
+			PreferGo: true,
+			Dial: func(ctx context.Context, network, address string) (net.Conn, error) {
+				return net.Dial("udp", dnsAddr)
+			},
+		}
+	}
+
+	// login to frps
+	for {
+		conn, cm, err := svr.login()
+		if err != nil {
+			xl.Warn("login to server failed: %v", err)
+
+			// if login_fail_exit is true, just exit this program
+			// otherwise sleep a while and try again to connect to server
+			if svr.cfg.LoginFailExit {
+				return err
+			}
+			util.RandomSleep(5*time.Second, 0.9, 1.1)
+		} else {
+			// login success
+			ctl := NewControl(svr.ctx, svr.runID, conn, cm, svr.cfg, svr.pxyCfgs, svr.visitorCfgs, svr.authSetter)
+			ctl.Run()
+			svr.ctlMu.Lock()
+			svr.ctl = ctl
+			svr.ctlMu.Unlock()
+			break
+		}
+	}
+
+	go svr.keepControllerWorking()
+
+	if svr.cfg.AdminPort != 0 {
+		// Init admin server assets
+		assets.Load(svr.cfg.AssetsDir)
+
+		address := net.JoinHostPort(svr.cfg.AdminAddr, strconv.Itoa(svr.cfg.AdminPort))
+		err := svr.RunAdminServer(address)
+		if err != nil {
+			log.Warn("run admin server error: %v", err)
+		}
+		log.Info("admin server listen on %s:%d", svr.cfg.AdminAddr, svr.cfg.AdminPort)
+	}
+	<-svr.ctx.Done()
+	// service context may not be canceled by svr.Close(), we should call it here to release resources
+	if atomic.LoadUint32(&svr.exit) == 0 {
+		svr.Close()
+	}
+	return nil
+}
+
+func (svr *Service) keepControllerWorking() {
+	xl := xlog.FromContextSafe(svr.ctx)
+	maxDelayTime := 20 * time.Second
+	delayTime := time.Second
+
+	// if frpc reconnect frps, we need to limit retry times in 1min
+	// current retry logic is sleep 0s, 0s, 0s, 1s, 2s, 4s, 8s, ...
+	// when exceed 1min, we will reset delay and counts
+	cutoffTime := time.Now().Add(time.Minute)
+	reconnectDelay := time.Second
+	reconnectCounts := 1
+
+	for {
+		<-svr.ctl.ClosedDoneCh()
+		if atomic.LoadUint32(&svr.exit) != 0 {
+			return
+		}
+
+		// the first three attempts with a low delay
+		if reconnectCounts > 3 {
+			util.RandomSleep(reconnectDelay, 0.9, 1.1)
+			xl.Info("wait %v to reconnect", reconnectDelay)
+			reconnectDelay *= 2
+		} else {
+			util.RandomSleep(time.Second, 0, 0.5)
+		}
+		reconnectCounts++
+
+		now := time.Now()
+		if now.After(cutoffTime) {
+			// reset
+			cutoffTime = now.Add(time.Minute)
+			reconnectDelay = time.Second
+			reconnectCounts = 1
+		}
+
+		for {
+			if atomic.LoadUint32(&svr.exit) != 0 {
+				return
+			}
+
+			xl.Info("try to reconnect to server...")
+			conn, cm, err := svr.login()
+			if err != nil {
+				xl.Warn("reconnect to server error: %v, wait %v for another retry", err, delayTime)
+				util.RandomSleep(delayTime, 0.9, 1.1)
+
+				delayTime *= 2
+				if delayTime > maxDelayTime {
+					delayTime = maxDelayTime
+				}
+				continue
+			}
+			// reconnect success, init delayTime
+			delayTime = time.Second
+
+			ctl := NewControl(svr.ctx, svr.runID, conn, cm, svr.cfg, svr.pxyCfgs, svr.visitorCfgs, svr.authSetter)
+			ctl.Run()
+			svr.ctlMu.Lock()
+			if svr.ctl != nil {
+				svr.ctl.Close()
+			}
+			svr.ctl = ctl
+			svr.ctlMu.Unlock()
+			break
+		}
+	}
+}
+
+// login creates a connection to frps and registers it self as a client
+// conn: control connection
+// session: if it's not nil, using tcp mux
+func (svr *Service) login() (conn net.Conn, cm *ConnectionManager, err error) {
+	xl := xlog.FromContextSafe(svr.ctx)
+	cm = NewConnectionManager(svr.ctx, &svr.cfg)
+
+	if err = cm.OpenConnection(); err != nil {
+		return nil, nil, err
+	}
+
+	defer func() {
+		if err != nil {
+			cm.Close()
+		}
+	}()
+
+	conn, err = cm.Connect()
+	if err != nil {
+		return
+	}
+
+	loginMsg := &msg.Login{
+		Arch:      runtime.GOARCH,
+		Os:        runtime.GOOS,
+		PoolCount: svr.cfg.PoolCount,
+		User:      svr.cfg.User,
+		Version:   version.Full(),
+		Timestamp: time.Now().Unix(),
+		RunID:     svr.runID,
+		Metas:     svr.cfg.Metas,
+	}
+
+	// Add auth
+	if err = svr.authSetter.SetLogin(loginMsg); err != nil {
+		return
+	}
+
+	if err = msg.WriteMsg(conn, loginMsg); err != nil {
+		return
+	}
+
+	var loginRespMsg msg.LoginResp
+	_ = conn.SetReadDeadline(time.Now().Add(10 * time.Second))
+	if err = msg.ReadMsgInto(conn, &loginRespMsg); err != nil {
+		return
+	}
+	_ = conn.SetReadDeadline(time.Time{})
+
+	if loginRespMsg.Error != "" {
+		err = fmt.Errorf("%s", loginRespMsg.Error)
+		xl.Error("%s", loginRespMsg.Error)
+		return
+	}
+
+	svr.runID = loginRespMsg.RunID
+	xl.ResetPrefixes()
+	xl.AppendPrefix(svr.runID)
+
+	xl.Info("login to server success, get run id [%s]", loginRespMsg.RunID)
+	return
+}
+
+func (svr *Service) ReloadConf(pxyCfgs map[string]config.ProxyConf, visitorCfgs map[string]config.VisitorConf) error {
+	svr.cfgMu.Lock()
+	svr.pxyCfgs = pxyCfgs
+	svr.visitorCfgs = visitorCfgs
+	svr.cfgMu.Unlock()
+
+	svr.ctlMu.RLock()
+	ctl := svr.ctl
+	svr.ctlMu.RUnlock()
+
+	if ctl != nil {
+		return svr.ctl.ReloadConf(pxyCfgs, visitorCfgs)
+	}
+	return nil
+}
+
+func (svr *Service) Close() {
+	svr.GracefulClose(time.Duration(0))
+}
+
+func (svr *Service) GracefulClose(d time.Duration) {
+	atomic.StoreUint32(&svr.exit, 1)
+
+	svr.ctlMu.RLock()
+	if svr.ctl != nil {
+		svr.ctl.GracefulClose(d)
+		svr.ctl = nil
+	}
+	svr.ctlMu.RUnlock()
+
+	if svr.cancel != nil {
+		svr.cancel()
+	}
+}
+
+type ConnectionManager struct {
+	ctx context.Context
+	cfg *config.ClientCommonConf
+
+	muxSession *fmux.Session
+	quicConn   quic.Connection
+}
+
+func NewConnectionManager(ctx context.Context, cfg *config.ClientCommonConf) *ConnectionManager {
+	return &ConnectionManager{
+		ctx: ctx,
+		cfg: cfg,
+	}
+}
+
+func (cm *ConnectionManager) OpenConnection() error {
+	xl := xlog.FromContextSafe(cm.ctx)
+
+	// special for quic
+	if strings.EqualFold(cm.cfg.Protocol, "quic") {
+		var tlsConfig *tls.Config
+		var err error
+		sn := cm.cfg.TLSServerName
+		if sn == "" {
+			sn = cm.cfg.ServerAddr
+		}
+		if cm.cfg.TLSEnable {
+			tlsConfig, err = transport.NewClientTLSConfig(
+				cm.cfg.TLSCertFile,
+				cm.cfg.TLSKeyFile,
+				cm.cfg.TLSTrustedCaFile,
+				sn)
+		} else {
+			tlsConfig, err = transport.NewClientTLSConfig("", "", "", sn)
+		}
+		if err != nil {
+			xl.Warn("fail to build tls configuration, err: %v", err)
+			return err
+		}
+		tlsConfig.NextProtos = []string{"frp"}
+
+		conn, err := quic.DialAddrContext(
+			cm.ctx,
+			net.JoinHostPort(cm.cfg.ServerAddr, strconv.Itoa(cm.cfg.ServerPort)),
+			tlsConfig, &quic.Config{
+				MaxIdleTimeout:     time.Duration(cm.cfg.QUICMaxIdleTimeout) * time.Second,
+				MaxIncomingStreams: int64(cm.cfg.QUICMaxIncomingStreams),
+				KeepAlivePeriod:    time.Duration(cm.cfg.QUICKeepalivePeriod) * time.Second,
+			})
+		if err != nil {
+			return err
+		}
+		cm.quicConn = conn
+		return nil
+	}
+
+	if !cm.cfg.TCPMux {
+		return nil
+	}
+
+	conn, err := cm.realConnect()
+	if err != nil {
+		return err
+	}
+
+	fmuxCfg := fmux.DefaultConfig()
+	fmuxCfg.KeepAliveInterval = time.Duration(cm.cfg.TCPMuxKeepaliveInterval) * time.Second
+	fmuxCfg.LogOutput = io.Discard
+	fmuxCfg.MaxStreamWindowSize = 6 * 1024 * 1024
+	session, err := fmux.Client(conn, fmuxCfg)
+	if err != nil {
+		return err
+	}
+	cm.muxSession = session
+	return nil
+}
+
+func (cm *ConnectionManager) Connect() (net.Conn, error) {
+	if cm.quicConn != nil {
+		stream, err := cm.quicConn.OpenStreamSync(context.Background())
+		if err != nil {
+			return nil, err
+		}
+		return utilnet.QuicStreamToNetConn(stream, cm.quicConn), nil
+	} else if cm.muxSession != nil {
+		stream, err := cm.muxSession.OpenStream()
+		if err != nil {
+			return nil, err
+		}
+		return stream, nil
+	}
+
+	return cm.realConnect()
+}
+
+func (cm *ConnectionManager) realConnect() (net.Conn, error) {
+	xl := xlog.FromContextSafe(cm.ctx)
+	var tlsConfig *tls.Config
+	var err error
+	tlsEnable := cm.cfg.TLSEnable
+	if cm.cfg.Protocol == "wss" {
+		tlsEnable = true
+	}
+	if tlsEnable {
+		sn := cm.cfg.TLSServerName
+		if sn == "" {
+			sn = cm.cfg.ServerAddr
+		}
+
+		tlsConfig, err = transport.NewClientTLSConfig(
+			cm.cfg.TLSCertFile,
+			cm.cfg.TLSKeyFile,
+			cm.cfg.TLSTrustedCaFile,
+			sn)
+		if err != nil {
+			xl.Warn("fail to build tls configuration, err: %v", err)
+			return nil, err
+		}
+	}
+
+	proxyType, addr, auth, err := libdial.ParseProxyURL(cm.cfg.HTTPProxy)
+	if err != nil {
+		xl.Error("fail to parse proxy url")
+		return nil, err
+	}
+	dialOptions := []libdial.DialOption{}
+	protocol := cm.cfg.Protocol
+	switch protocol {
+	case "websocket":
+		protocol = "tcp"
+		dialOptions = append(dialOptions, libdial.WithAfterHook(libdial.AfterHook{Hook: utilnet.DialHookWebsocket(protocol, "")}))
+		dialOptions = append(dialOptions, libdial.WithAfterHook(libdial.AfterHook{
+			Hook: utilnet.DialHookCustomTLSHeadByte(tlsConfig != nil, cm.cfg.DisableCustomTLSFirstByte),
+		}))
+		dialOptions = append(dialOptions, libdial.WithTLSConfig(tlsConfig))
+	case "wss":
+		protocol = "tcp"
+		dialOptions = append(dialOptions, libdial.WithTLSConfigAndPriority(100, tlsConfig))
+		// Make sure that if it is wss, the websocket hook is executed after the tls hook.
+		dialOptions = append(dialOptions, libdial.WithAfterHook(libdial.AfterHook{Hook: utilnet.DialHookWebsocket(protocol, tlsConfig.ServerName), Priority: 110}))
+	default:
+		dialOptions = append(dialOptions, libdial.WithTLSConfig(tlsConfig))
+	}
+
+	if cm.cfg.ConnectServerLocalIP != "" {
+		dialOptions = append(dialOptions, libdial.WithLocalAddr(cm.cfg.ConnectServerLocalIP))
+	}
+	dialOptions = append(dialOptions,
+		libdial.WithProtocol(protocol),
+		libdial.WithTimeout(time.Duration(cm.cfg.DialServerTimeout)*time.Second),
+		libdial.WithKeepAlive(time.Duration(cm.cfg.DialServerKeepAlive)*time.Second),
+		libdial.WithProxy(proxyType, addr),
+		libdial.WithProxyAuth(auth),
+	)
+	conn, err := libdial.DialContext(
+		cm.ctx,
+		net.JoinHostPort(cm.cfg.ServerAddr, strconv.Itoa(cm.cfg.ServerPort)),
+		dialOptions...,
+	)
+	return conn, err
+}
+
+func (cm *ConnectionManager) Close() error {
+	if cm.quicConn != nil {
+		_ = cm.quicConn.CloseWithError(0, "")
+	}
+	if cm.muxSession != nil {
+		_ = cm.muxSession.Close()
+	}
+	return nil
+}

client/visitor/stcp.go

@@ -0,0 +1,135 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package visitor
+
+import (
+	"io"
+	"net"
+	"strconv"
+	"time"
+
+	libio "github.com/fatedier/golib/io"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/msg"
+	"github.com/fatedier/frp/pkg/util/util"
+	"github.com/fatedier/frp/pkg/util/xlog"
+)
+
+type STCPVisitor struct {
+	*BaseVisitor
+
+	cfg *config.STCPVisitorConf
+}
+
+func (sv *STCPVisitor) Run() (err error) {
+	if sv.cfg.BindPort > 0 {
+		sv.l, err = net.Listen("tcp", net.JoinHostPort(sv.cfg.BindAddr, strconv.Itoa(sv.cfg.BindPort)))
+		if err != nil {
+			return
+		}
+		go sv.worker()
+	}
+
+	go sv.internalConnWorker()
+	return
+}
+
+func (sv *STCPVisitor) Close() {
+	sv.BaseVisitor.Close()
+}
+
+func (sv *STCPVisitor) worker() {
+	xl := xlog.FromContextSafe(sv.ctx)
+	for {
+		conn, err := sv.l.Accept()
+		if err != nil {
+			xl.Warn("stcp local listener closed")
+			return
+		}
+		go sv.handleConn(conn)
+	}
+}
+
+func (sv *STCPVisitor) internalConnWorker() {
+	xl := xlog.FromContextSafe(sv.ctx)
+	for {
+		conn, err := sv.internalLn.Accept()
+		if err != nil {
+			xl.Warn("stcp internal listener closed")
+			return
+		}
+		go sv.handleConn(conn)
+	}
+}
+
+func (sv *STCPVisitor) handleConn(userConn net.Conn) {
+	xl := xlog.FromContextSafe(sv.ctx)
+	defer userConn.Close()
+
+	xl.Debug("get a new stcp user connection")
+	visitorConn, err := sv.helper.ConnectServer()
+	if err != nil {
+		return
+	}
+	defer visitorConn.Close()
+
+	now := time.Now().Unix()
+	newVisitorConnMsg := &msg.NewVisitorConn{
+		RunID:          sv.helper.RunID(),
+		ProxyName:      sv.cfg.ServerName,
+		SignKey:        util.GetAuthKey(sv.cfg.Sk, now),
+		Timestamp:      now,
+		UseEncryption:  sv.cfg.UseEncryption,
+		UseCompression: sv.cfg.UseCompression,
+	}
+	err = msg.WriteMsg(visitorConn, newVisitorConnMsg)
+	if err != nil {
+		xl.Warn("send newVisitorConnMsg to server error: %v", err)
+		return
+	}
+
+	var newVisitorConnRespMsg msg.NewVisitorConnResp
+	_ = visitorConn.SetReadDeadline(time.Now().Add(10 * time.Second))
+	err = msg.ReadMsgInto(visitorConn, &newVisitorConnRespMsg)
+	if err != nil {
+		xl.Warn("get newVisitorConnRespMsg error: %v", err)
+		return
+	}
+	_ = visitorConn.SetReadDeadline(time.Time{})
+
+	if newVisitorConnRespMsg.Error != "" {
+		xl.Warn("start new visitor connection error: %s", newVisitorConnRespMsg.Error)
+		return
+	}
+
+	var remote io.ReadWriteCloser
+	remote = visitorConn
+	if sv.cfg.UseEncryption {
+		remote, err = libio.WithEncryption(remote, []byte(sv.cfg.Sk))
+		if err != nil {
+			xl.Error("create encryption stream error: %v", err)
+			return
+		}
+	}
+
+	if sv.cfg.UseCompression {
+		var releaseFn func()
+		remote, releaseFn = libio.WithCompressionFromPool(remote)
+		defer releaseFn()
+	}
+
+	libio.Join(userConn, remote)
+}

client/visitor/sudp.go

@@ -0,0 +1,264 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package visitor
+
+import (
+	"fmt"
+	"io"
+	"net"
+	"strconv"
+	"sync"
+	"time"
+
+	"github.com/fatedier/golib/errors"
+	libio "github.com/fatedier/golib/io"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/msg"
+	"github.com/fatedier/frp/pkg/proto/udp"
+	utilnet "github.com/fatedier/frp/pkg/util/net"
+	"github.com/fatedier/frp/pkg/util/util"
+	"github.com/fatedier/frp/pkg/util/xlog"
+)
+
+type SUDPVisitor struct {
+	*BaseVisitor
+
+	checkCloseCh chan struct{}
+	// udpConn is the listener of udp packet
+	udpConn *net.UDPConn
+	readCh  chan *msg.UDPPacket
+	sendCh  chan *msg.UDPPacket
+
+	cfg *config.SUDPVisitorConf
+}
+
+// SUDP Run start listen a udp port
+func (sv *SUDPVisitor) Run() (err error) {
+	xl := xlog.FromContextSafe(sv.ctx)
+
+	addr, err := net.ResolveUDPAddr("udp", net.JoinHostPort(sv.cfg.BindAddr, strconv.Itoa(sv.cfg.BindPort)))
+	if err != nil {
+		return fmt.Errorf("sudp ResolveUDPAddr error: %v", err)
+	}
+
+	sv.udpConn, err = net.ListenUDP("udp", addr)
+	if err != nil {
+		return fmt.Errorf("listen udp port %s error: %v", addr.String(), err)
+	}
+
+	sv.sendCh = make(chan *msg.UDPPacket, 1024)
+	sv.readCh = make(chan *msg.UDPPacket, 1024)
+
+	xl.Info("sudp start to work, listen on %s", addr)
+
+	go sv.dispatcher()
+	go udp.ForwardUserConn(sv.udpConn, sv.readCh, sv.sendCh, int(sv.clientCfg.UDPPacketSize))
+
+	return
+}
+
+func (sv *SUDPVisitor) dispatcher() {
+	xl := xlog.FromContextSafe(sv.ctx)
+
+	var (
+		visitorConn net.Conn
+		err         error
+
+		firstPacket *msg.UDPPacket
+	)
+
+	for {
+		select {
+		case firstPacket = <-sv.sendCh:
+			if firstPacket == nil {
+				xl.Info("frpc sudp visitor proxy is closed")
+				return
+			}
+		case <-sv.checkCloseCh:
+			xl.Info("frpc sudp visitor proxy is closed")
+			return
+		}
+
+		visitorConn, err = sv.getNewVisitorConn()
+		if err != nil {
+			xl.Warn("newVisitorConn to frps error: %v, try to reconnect", err)
+			continue
+		}
+
+		// visitorConn always be closed when worker done.
+		sv.worker(visitorConn, firstPacket)
+
+		select {
+		case <-sv.checkCloseCh:
+			return
+		default:
+		}
+	}
+}
+
+func (sv *SUDPVisitor) worker(workConn net.Conn, firstPacket *msg.UDPPacket) {
+	xl := xlog.FromContextSafe(sv.ctx)
+	xl.Debug("starting sudp proxy worker")
+
+	wg := &sync.WaitGroup{}
+	wg.Add(2)
+	closeCh := make(chan struct{})
+
+	// udp service -> frpc -> frps -> frpc visitor -> user
+	workConnReaderFn := func(conn net.Conn) {
+		defer func() {
+			conn.Close()
+			close(closeCh)
+			wg.Done()
+		}()
+
+		for {
+			var (
+				rawMsg msg.Message
+				errRet error
+			)
+
+			// frpc will send heartbeat in workConn to frpc visitor for keeping alive
+			_ = conn.SetReadDeadline(time.Now().Add(60 * time.Second))
+			if rawMsg, errRet = msg.ReadMsg(conn); errRet != nil {
+				xl.Warn("read from workconn for user udp conn error: %v", errRet)
+				return
+			}
+
+			_ = conn.SetReadDeadline(time.Time{})
+			switch m := rawMsg.(type) {
+			case *msg.Ping:
+				xl.Debug("frpc visitor get ping message from frpc")
+				continue
+			case *msg.UDPPacket:
+				if errRet := errors.PanicToError(func() {
+					sv.readCh <- m
+					xl.Trace("frpc visitor get udp packet from workConn: %s", m.Content)
+				}); errRet != nil {
+					xl.Info("reader goroutine for udp work connection closed")
+					return
+				}
+			}
+		}
+	}
+
+	// udp service <- frpc <- frps <- frpc visitor <- user
+	workConnSenderFn := func(conn net.Conn) {
+		defer func() {
+			conn.Close()
+			wg.Done()
+		}()
+
+		var errRet error
+		if firstPacket != nil {
+			if errRet = msg.WriteMsg(conn, firstPacket); errRet != nil {
+				xl.Warn("sender goroutine for udp work connection closed: %v", errRet)
+				return
+			}
+			xl.Trace("send udp package to workConn: %s", firstPacket.Content)
+		}
+
+		for {
+			select {
+			case udpMsg, ok := <-sv.sendCh:
+				if !ok {
+					xl.Info("sender goroutine for udp work connection closed")
+					return
+				}
+
+				if errRet = msg.WriteMsg(conn, udpMsg); errRet != nil {
+					xl.Warn("sender goroutine for udp work connection closed: %v", errRet)
+					return
+				}
+				xl.Trace("send udp package to workConn: %s", udpMsg.Content)
+			case <-closeCh:
+				return
+			}
+		}
+	}
+
+	go workConnReaderFn(workConn)
+	go workConnSenderFn(workConn)
+
+	wg.Wait()
+	xl.Info("sudp worker is closed")
+}
+
+func (sv *SUDPVisitor) getNewVisitorConn() (net.Conn, error) {
+	xl := xlog.FromContextSafe(sv.ctx)
+	visitorConn, err := sv.helper.ConnectServer()
+	if err != nil {
+		return nil, fmt.Errorf("frpc connect frps error: %v", err)
+	}
+
+	now := time.Now().Unix()
+	newVisitorConnMsg := &msg.NewVisitorConn{
+		RunID:          sv.helper.RunID(),
+		ProxyName:      sv.cfg.ServerName,
+		SignKey:        util.GetAuthKey(sv.cfg.Sk, now),
+		Timestamp:      now,
+		UseEncryption:  sv.cfg.UseEncryption,
+		UseCompression: sv.cfg.UseCompression,
+	}
+	err = msg.WriteMsg(visitorConn, newVisitorConnMsg)
+	if err != nil {
+		return nil, fmt.Errorf("frpc send newVisitorConnMsg to frps error: %v", err)
+	}
+
+	var newVisitorConnRespMsg msg.NewVisitorConnResp
+	_ = visitorConn.SetReadDeadline(time.Now().Add(10 * time.Second))
+	err = msg.ReadMsgInto(visitorConn, &newVisitorConnRespMsg)
+	if err != nil {
+		return nil, fmt.Errorf("frpc read newVisitorConnRespMsg error: %v", err)
+	}
+	_ = visitorConn.SetReadDeadline(time.Time{})
+
+	if newVisitorConnRespMsg.Error != "" {
+		return nil, fmt.Errorf("start new visitor connection error: %s", newVisitorConnRespMsg.Error)
+	}
+
+	var remote io.ReadWriteCloser
+	remote = visitorConn
+	if sv.cfg.UseEncryption {
+		remote, err = libio.WithEncryption(remote, []byte(sv.cfg.Sk))
+		if err != nil {
+			xl.Error("create encryption stream error: %v", err)
+			return nil, err
+		}
+	}
+	if sv.cfg.UseCompression {
+		remote = libio.WithCompression(remote)
+	}
+	return utilnet.WrapReadWriteCloserToConn(remote, visitorConn), nil
+}
+
+func (sv *SUDPVisitor) Close() {
+	sv.mu.Lock()
+	defer sv.mu.Unlock()
+
+	select {
+	case <-sv.checkCloseCh:
+		return
+	default:
+		close(sv.checkCloseCh)
+	}
+	sv.BaseVisitor.Close()
+	if sv.udpConn != nil {
+		sv.udpConn.Close()
+	}
+	close(sv.readCh)
+	close(sv.sendCh)
+}

client/visitor/visitor.go

@@ -0,0 +1,104 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package visitor
+
+import (
+	"context"
+	"net"
+	"sync"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/transport"
+	utilnet "github.com/fatedier/frp/pkg/util/net"
+	"github.com/fatedier/frp/pkg/util/xlog"
+)
+
+// Helper wrapps some functions for visitor to use.
+type Helper interface {
+	// ConnectServer directly connects to the frp server.
+	ConnectServer() (net.Conn, error)
+	// TransferConn transfers the connection to another visitor.
+	TransferConn(string, net.Conn) error
+	// MsgTransporter returns the message transporter that is used to send and receive messages
+	// to the frp server through the controller.
+	MsgTransporter() transport.MessageTransporter
+	// RunID returns the run id of current controller.
+	RunID() string
+}
+
+// Visitor is used for forward traffics from local port tot remote service.
+type Visitor interface {
+	Run() error
+	AcceptConn(conn net.Conn) error
+	Close()
+}
+
+func NewVisitor(
+	ctx context.Context,
+	cfg config.VisitorConf,
+	clientCfg config.ClientCommonConf,
+	helper Helper,
+) (visitor Visitor) {
+	xl := xlog.FromContextSafe(ctx).Spawn().AppendPrefix(cfg.GetBaseConfig().ProxyName)
+	baseVisitor := BaseVisitor{
+		clientCfg:  clientCfg,
+		helper:     helper,
+		ctx:        xlog.NewContext(ctx, xl),
+		internalLn: utilnet.NewInternalListener(),
+	}
+	switch cfg := cfg.(type) {
+	case *config.STCPVisitorConf:
+		visitor = &STCPVisitor{
+			BaseVisitor: &baseVisitor,
+			cfg:         cfg,
+		}
+	case *config.XTCPVisitorConf:
+		visitor = &XTCPVisitor{
+			BaseVisitor:   &baseVisitor,
+			cfg:           cfg,
+			startTunnelCh: make(chan struct{}),
+		}
+	case *config.SUDPVisitorConf:
+		visitor = &SUDPVisitor{
+			BaseVisitor:  &baseVisitor,
+			cfg:          cfg,
+			checkCloseCh: make(chan struct{}),
+		}
+	}
+	return
+}
+
+type BaseVisitor struct {
+	clientCfg  config.ClientCommonConf
+	helper     Helper
+	l          net.Listener
+	internalLn *utilnet.InternalListener
+
+	mu  sync.RWMutex
+	ctx context.Context
+}
+
+func (v *BaseVisitor) AcceptConn(conn net.Conn) error {
+	return v.internalLn.PutConn(conn)
+}
+
+func (v *BaseVisitor) Close() {
+	if v.l != nil {
+		v.l.Close()
+	}
+	if v.internalLn != nil {
+		v.internalLn.Close()
+	}
+}

client/visitor/visitor_manager.go

@@ -0,0 +1,192 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package visitor
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"reflect"
+	"sync"
+	"time"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/transport"
+	"github.com/fatedier/frp/pkg/util/xlog"
+)
+
+type Manager struct {
+	clientCfg config.ClientCommonConf
+	cfgs      map[string]config.VisitorConf
+	visitors  map[string]Visitor
+	helper    Helper
+
+	checkInterval time.Duration
+
+	mu  sync.RWMutex
+	ctx context.Context
+
+	stopCh chan struct{}
+}
+
+func NewManager(
+	ctx context.Context,
+	runID string,
+	clientCfg config.ClientCommonConf,
+	connectServer func() (net.Conn, error),
+	msgTransporter transport.MessageTransporter,
+) *Manager {
+	m := &Manager{
+		clientCfg:     clientCfg,
+		cfgs:          make(map[string]config.VisitorConf),
+		visitors:      make(map[string]Visitor),
+		checkInterval: 10 * time.Second,
+		ctx:           ctx,
+		stopCh:        make(chan struct{}),
+	}
+	m.helper = &visitorHelperImpl{
+		connectServerFn: connectServer,
+		msgTransporter:  msgTransporter,
+		transferConnFn:  m.TransferConn,
+		runID:           runID,
+	}
+	return m
+}
+
+func (vm *Manager) Run() {
+	xl := xlog.FromContextSafe(vm.ctx)
+
+	ticker := time.NewTicker(vm.checkInterval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-vm.stopCh:
+			xl.Info("gracefully shutdown visitor manager")
+			return
+		case <-ticker.C:
+			vm.mu.Lock()
+			for _, cfg := range vm.cfgs {
+				name := cfg.GetBaseConfig().ProxyName
+				if _, exist := vm.visitors[name]; !exist {
+					xl.Info("try to start visitor [%s]", name)
+					_ = vm.startVisitor(cfg)
+				}
+			}
+			vm.mu.Unlock()
+		}
+	}
+}
+
+func (vm *Manager) Close() {
+	vm.mu.Lock()
+	defer vm.mu.Unlock()
+	for _, v := range vm.visitors {
+		v.Close()
+	}
+	select {
+	case <-vm.stopCh:
+	default:
+		close(vm.stopCh)
+	}
+}
+
+// Hold lock before calling this function.
+func (vm *Manager) startVisitor(cfg config.VisitorConf) (err error) {
+	xl := xlog.FromContextSafe(vm.ctx)
+	name := cfg.GetBaseConfig().ProxyName
+	visitor := NewVisitor(vm.ctx, cfg, vm.clientCfg, vm.helper)
+	err = visitor.Run()
+	if err != nil {
+		xl.Warn("start error: %v", err)
+	} else {
+		vm.visitors[name] = visitor
+		xl.Info("start visitor success")
+	}
+	return
+}
+
+func (vm *Manager) Reload(cfgs map[string]config.VisitorConf) {
+	xl := xlog.FromContextSafe(vm.ctx)
+	vm.mu.Lock()
+	defer vm.mu.Unlock()
+
+	delNames := make([]string, 0)
+	for name, oldCfg := range vm.cfgs {
+		del := false
+		cfg, ok := cfgs[name]
+		if !ok || !reflect.DeepEqual(oldCfg, cfg) {
+			del = true
+		}
+
+		if del {
+			delNames = append(delNames, name)
+			delete(vm.cfgs, name)
+			if visitor, ok := vm.visitors[name]; ok {
+				visitor.Close()
+			}
+			delete(vm.visitors, name)
+		}
+	}
+	if len(delNames) > 0 {
+		xl.Info("visitor removed: %v", delNames)
+	}
+
+	addNames := make([]string, 0)
+	for name, cfg := range cfgs {
+		if _, ok := vm.cfgs[name]; !ok {
+			vm.cfgs[name] = cfg
+			addNames = append(addNames, name)
+			_ = vm.startVisitor(cfg)
+		}
+	}
+	if len(addNames) > 0 {
+		xl.Info("visitor added: %v", addNames)
+	}
+}
+
+// TransferConn transfers a connection to a visitor.
+func (vm *Manager) TransferConn(name string, conn net.Conn) error {
+	vm.mu.RLock()
+	defer vm.mu.RUnlock()
+	v, ok := vm.visitors[name]
+	if !ok {
+		return fmt.Errorf("visitor [%s] not found", name)
+	}
+	return v.AcceptConn(conn)
+}
+
+type visitorHelperImpl struct {
+	connectServerFn func() (net.Conn, error)
+	msgTransporter  transport.MessageTransporter
+	transferConnFn  func(name string, conn net.Conn) error
+	runID           string
+}
+
+func (v *visitorHelperImpl) ConnectServer() (net.Conn, error) {
+	return v.connectServerFn()
+}
+
+func (v *visitorHelperImpl) TransferConn(name string, conn net.Conn) error {
+	return v.transferConnFn(name, conn)
+}
+
+func (v *visitorHelperImpl) MsgTransporter() transport.MessageTransporter {
+	return v.msgTransporter
+}
+
+func (v *visitorHelperImpl) RunID() string {
+	return v.runID
+}

client/visitor/xtcp.go

@@ -0,0 +1,457 @@
+// Copyright 2017 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package visitor
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"net"
+	"strconv"
+	"sync"
+	"time"
+
+	libio "github.com/fatedier/golib/io"
+	fmux "github.com/hashicorp/yamux"
+	quic "github.com/quic-go/quic-go"
+	"golang.org/x/time/rate"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/msg"
+	"github.com/fatedier/frp/pkg/nathole"
+	"github.com/fatedier/frp/pkg/transport"
+	utilnet "github.com/fatedier/frp/pkg/util/net"
+	"github.com/fatedier/frp/pkg/util/util"
+	"github.com/fatedier/frp/pkg/util/xlog"
+)
+
+var ErrNoTunnelSession = errors.New("no tunnel session")
+
+type XTCPVisitor struct {
+	*BaseVisitor
+	session       TunnelSession
+	startTunnelCh chan struct{}
+	retryLimiter  *rate.Limiter
+	cancel        context.CancelFunc
+
+	cfg *config.XTCPVisitorConf
+}
+
+func (sv *XTCPVisitor) Run() (err error) {
+	sv.ctx, sv.cancel = context.WithCancel(sv.ctx)
+
+	if sv.cfg.Protocol == "kcp" {
+		sv.session = NewKCPTunnelSession()
+	} else {
+		sv.session = NewQUICTunnelSession(&sv.clientCfg)
+	}
+
+	if sv.cfg.BindPort > 0 {
+		sv.l, err = net.Listen("tcp", net.JoinHostPort(sv.cfg.BindAddr, strconv.Itoa(sv.cfg.BindPort)))
+		if err != nil {
+			return
+		}
+		go sv.worker()
+	}
+
+	go sv.internalConnWorker()
+	go sv.processTunnelStartEvents()
+	if sv.cfg.KeepTunnelOpen {
+		sv.retryLimiter = rate.NewLimiter(rate.Every(time.Hour/time.Duration(sv.cfg.MaxRetriesAnHour)), sv.cfg.MaxRetriesAnHour)
+		go sv.keepTunnelOpenWorker()
+	}
+	return
+}
+
+func (sv *XTCPVisitor) Close() {
+	sv.mu.Lock()
+	defer sv.mu.Unlock()
+	sv.BaseVisitor.Close()
+	if sv.cancel != nil {
+		sv.cancel()
+	}
+	if sv.session != nil {
+		sv.session.Close()
+	}
+}
+
+func (sv *XTCPVisitor) worker() {
+	xl := xlog.FromContextSafe(sv.ctx)
+	for {
+		conn, err := sv.l.Accept()
+		if err != nil {
+			xl.Warn("xtcp local listener closed")
+			return
+		}
+		go sv.handleConn(conn)
+	}
+}
+
+func (sv *XTCPVisitor) internalConnWorker() {
+	xl := xlog.FromContextSafe(sv.ctx)
+	for {
+		conn, err := sv.internalLn.Accept()
+		if err != nil {
+			xl.Warn("xtcp internal listener closed")
+			return
+		}
+		go sv.handleConn(conn)
+	}
+}
+
+func (sv *XTCPVisitor) processTunnelStartEvents() {
+	for {
+		select {
+		case <-sv.ctx.Done():
+			return
+		case <-sv.startTunnelCh:
+			start := time.Now()
+			sv.makeNatHole()
+			duration := time.Since(start)
+			// avoid too frequently
+			if duration < 10*time.Second {
+				time.Sleep(10*time.Second - duration)
+			}
+		}
+	}
+}
+
+func (sv *XTCPVisitor) keepTunnelOpenWorker() {
+	xl := xlog.FromContextSafe(sv.ctx)
+	ticker := time.NewTicker(time.Duration(sv.cfg.MinRetryInterval) * time.Second)
+	defer ticker.Stop()
+
+	sv.startTunnelCh <- struct{}{}
+	for {
+		select {
+		case <-sv.ctx.Done():
+			return
+		case <-ticker.C:
+			xl.Debug("keepTunnelOpenWorker try to check tunnel...")
+			conn, err := sv.getTunnelConn()
+			if err != nil {
+				xl.Warn("keepTunnelOpenWorker get tunnel connection error: %v", err)
+				_ = sv.retryLimiter.Wait(sv.ctx)
+				continue
+			}
+			xl.Debug("keepTunnelOpenWorker check success")
+			if conn != nil {
+				conn.Close()
+			}
+		}
+	}
+}
+
+func (sv *XTCPVisitor) handleConn(userConn net.Conn) {
+	xl := xlog.FromContextSafe(sv.ctx)
+	isConnTrasfered := false
+	defer func() {
+		if !isConnTrasfered {
+			userConn.Close()
+		}
+	}()
+
+	xl.Debug("get a new xtcp user connection")
+
+	// Open a tunnel connection to the server. If there is already a successful hole-punching connection,
+	// it will be reused. Otherwise, it will block and wait for a successful hole-punching connection until timeout.
+	ctx := context.Background()
+	if sv.cfg.FallbackTo != "" {
+		timeoutCtx, cancel := context.WithTimeout(ctx, time.Duration(sv.cfg.FallbackTimeoutMs)*time.Millisecond)
+		defer cancel()
+		ctx = timeoutCtx
+	}
+	tunnelConn, err := sv.openTunnel(ctx)
+	if err != nil {
+		xl.Error("open tunnel error: %v", err)
+		// no fallback, just return
+		if sv.cfg.FallbackTo == "" {
+			return
+		}
+
+		xl.Debug("try to transfer connection to visitor: %s", sv.cfg.FallbackTo)
+		if err := sv.helper.TransferConn(sv.cfg.FallbackTo, userConn); err != nil {
+			xl.Error("transfer connection to visitor %s error: %v", sv.cfg.FallbackTo, err)
+			return
+		}
+		isConnTrasfered = true
+		return
+	}
+
+	var muxConnRWCloser io.ReadWriteCloser = tunnelConn
+	if sv.cfg.UseEncryption {
+		muxConnRWCloser, err = libio.WithEncryption(muxConnRWCloser, []byte(sv.cfg.Sk))
+		if err != nil {
+			xl.Error("create encryption stream error: %v", err)
+			return
+		}
+	}
+	if sv.cfg.UseCompression {
+		var releaseFn func()
+		muxConnRWCloser, releaseFn = libio.WithCompressionFromPool(muxConnRWCloser)
+		defer releaseFn()
+	}
+
+	_, _, errs := libio.Join(userConn, muxConnRWCloser)
+	xl.Debug("join connections closed")
+	if len(errs) > 0 {
+		xl.Trace("join connections errors: %v", errs)
+	}
+}
+
+// openTunnel will open a tunnel connection to the target server.
+func (sv *XTCPVisitor) openTunnel(ctx context.Context) (conn net.Conn, err error) {
+	xl := xlog.FromContextSafe(sv.ctx)
+	ticker := time.NewTicker(500 * time.Millisecond)
+	defer ticker.Stop()
+
+	timeoutC := time.After(20 * time.Second)
+	immediateTrigger := make(chan struct{}, 1)
+	defer close(immediateTrigger)
+	immediateTrigger <- struct{}{}
+
+	for {
+		select {
+		case <-sv.ctx.Done():
+			return nil, sv.ctx.Err()
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		case <-immediateTrigger:
+			conn, err = sv.getTunnelConn()
+		case <-ticker.C:
+			conn, err = sv.getTunnelConn()
+		case <-timeoutC:
+			return nil, fmt.Errorf("open tunnel timeout")
+		}
+
+		if err != nil {
+			if err != ErrNoTunnelSession {
+				xl.Warn("get tunnel connection error: %v", err)
+			}
+			continue
+		}
+		return conn, nil
+	}
+}
+
+func (sv *XTCPVisitor) getTunnelConn() (net.Conn, error) {
+	conn, err := sv.session.OpenConn(sv.ctx)
+	if err == nil {
+		return conn, nil
+	}
+	sv.session.Close()
+
+	select {
+	case sv.startTunnelCh <- struct{}{}:
+	default:
+	}
+	return nil, err
+}
+
+// 0. PreCheck
+// 1. Prepare
+// 2. ExchangeInfo
+// 3. MakeNATHole
+// 4. Create a tunnel session using an underlying UDP connection.
+func (sv *XTCPVisitor) makeNatHole() {
+	xl := xlog.FromContextSafe(sv.ctx)
+	xl.Trace("makeNatHole start")
+	if err := nathole.PreCheck(sv.ctx, sv.helper.MsgTransporter(), sv.cfg.ServerName, 5*time.Second); err != nil {
+		xl.Warn("nathole precheck error: %v", err)
+		return
+	}
+
+	xl.Trace("nathole prepare start")
+	prepareResult, err := nathole.Prepare([]string{sv.clientCfg.NatHoleSTUNServer})
+	if err != nil {
+		xl.Warn("nathole prepare error: %v", err)
+		return
+	}
+	xl.Info("nathole prepare success, nat type: %s, behavior: %s, addresses: %v, assistedAddresses: %v",
+		prepareResult.NatType, prepareResult.Behavior, prepareResult.Addrs, prepareResult.AssistedAddrs)
+
+	listenConn := prepareResult.ListenConn
+
+	// send NatHoleVisitor to server
+	now := time.Now().Unix()
+	transactionID := nathole.NewTransactionID()
+	natHoleVisitorMsg := &msg.NatHoleVisitor{
+		TransactionID: transactionID,
+		ProxyName:     sv.cfg.ServerName,
+		Protocol:      sv.cfg.Protocol,
+		SignKey:       util.GetAuthKey(sv.cfg.Sk, now),
+		Timestamp:     now,
+		MappedAddrs:   prepareResult.Addrs,
+		AssistedAddrs: prepareResult.AssistedAddrs,
+	}
+
+	xl.Trace("nathole exchange info start")
+	natHoleRespMsg, err := nathole.ExchangeInfo(sv.ctx, sv.helper.MsgTransporter(), transactionID, natHoleVisitorMsg, 5*time.Second)
+	if err != nil {
+		listenConn.Close()
+		xl.Warn("nathole exchange info error: %v", err)
+		return
+	}
+
+	xl.Info("get natHoleRespMsg, sid [%s], protocol [%s], candidate address %v, assisted address %v, detectBehavior: %+v",
+		natHoleRespMsg.Sid, natHoleRespMsg.Protocol, natHoleRespMsg.CandidateAddrs,
+		natHoleRespMsg.AssistedAddrs, natHoleRespMsg.DetectBehavior)
+
+	newListenConn, raddr, err := nathole.MakeHole(sv.ctx, listenConn, natHoleRespMsg, []byte(sv.cfg.Sk))
+	if err != nil {
+		listenConn.Close()
+		xl.Warn("make hole error: %v", err)
+		return
+	}
+	listenConn = newListenConn
+	xl.Info("establishing nat hole connection successful, sid [%s], remoteAddr [%s]", natHoleRespMsg.Sid, raddr)
+
+	if err := sv.session.Init(listenConn, raddr); err != nil {
+		listenConn.Close()
+		xl.Warn("init tunnel session error: %v", err)
+		return
+	}
+}
+
+type TunnelSession interface {
+	Init(listenConn *net.UDPConn, raddr *net.UDPAddr) error
+	OpenConn(context.Context) (net.Conn, error)
+	Close()
+}
+
+type KCPTunnelSession struct {
+	session *fmux.Session
+	lConn   *net.UDPConn
+	mu      sync.RWMutex
+}
+
+func NewKCPTunnelSession() TunnelSession {
+	return &KCPTunnelSession{}
+}
+
+func (ks *KCPTunnelSession) Init(listenConn *net.UDPConn, raddr *net.UDPAddr) error {
+	listenConn.Close()
+	laddr, _ := net.ResolveUDPAddr("udp", listenConn.LocalAddr().String())
+	lConn, err := net.DialUDP("udp", laddr, raddr)
+	if err != nil {
+		return fmt.Errorf("dial udp error: %v", err)
+	}
+	remote, err := utilnet.NewKCPConnFromUDP(lConn, true, raddr.String())
+	if err != nil {
+		return fmt.Errorf("create kcp connection from udp connection error: %v", err)
+	}
+
+	fmuxCfg := fmux.DefaultConfig()
+	fmuxCfg.KeepAliveInterval = 10 * time.Second
+	fmuxCfg.MaxStreamWindowSize = 6 * 1024 * 1024
+	fmuxCfg.LogOutput = io.Discard
+	session, err := fmux.Client(remote, fmuxCfg)
+	if err != nil {
+		remote.Close()
+		return fmt.Errorf("initial client session error: %v", err)
+	}
+	ks.mu.Lock()
+	ks.session = session
+	ks.lConn = lConn
+	ks.mu.Unlock()
+	return nil
+}
+
+func (ks *KCPTunnelSession) OpenConn(ctx context.Context) (net.Conn, error) {
+	ks.mu.RLock()
+	defer ks.mu.RUnlock()
+	session := ks.session
+	if session == nil {
+		return nil, ErrNoTunnelSession
+	}
+	return session.Open()
+}
+
+func (ks *KCPTunnelSession) Close() {
+	ks.mu.Lock()
+	defer ks.mu.Unlock()
+	if ks.session != nil {
+		_ = ks.session.Close()
+		ks.session = nil
+	}
+	if ks.lConn != nil {
+		_ = ks.lConn.Close()
+		ks.lConn = nil
+	}
+}
+
+type QUICTunnelSession struct {
+	session    quic.Connection
+	listenConn *net.UDPConn
+	mu         sync.RWMutex
+
+	clientCfg *config.ClientCommonConf
+}
+
+func NewQUICTunnelSession(clientCfg *config.ClientCommonConf) TunnelSession {
+	return &QUICTunnelSession{
+		clientCfg: clientCfg,
+	}
+}
+
+func (qs *QUICTunnelSession) Init(listenConn *net.UDPConn, raddr *net.UDPAddr) error {
+	tlsConfig, err := transport.NewClientTLSConfig("", "", "", raddr.String())
+	if err != nil {
+		return fmt.Errorf("create tls config error: %v", err)
+	}
+	tlsConfig.NextProtos = []string{"frp"}
+	quicConn, err := quic.Dial(listenConn, raddr, raddr.String(), tlsConfig,
+		&quic.Config{
+			MaxIdleTimeout:     time.Duration(qs.clientCfg.QUICMaxIdleTimeout) * time.Second,
+			MaxIncomingStreams: int64(qs.clientCfg.QUICMaxIncomingStreams),
+			KeepAlivePeriod:    time.Duration(qs.clientCfg.QUICKeepalivePeriod) * time.Second,
+		})
+	if err != nil {
+		return fmt.Errorf("dial quic error: %v", err)
+	}
+	qs.mu.Lock()
+	qs.session = quicConn
+	qs.listenConn = listenConn
+	qs.mu.Unlock()
+	return nil
+}
+
+func (qs *QUICTunnelSession) OpenConn(ctx context.Context) (net.Conn, error) {
+	qs.mu.RLock()
+	defer qs.mu.RUnlock()
+	session := qs.session
+	if session == nil {
+		return nil, ErrNoTunnelSession
+	}
+	stream, err := session.OpenStreamSync(ctx)
+	if err != nil {
+		return nil, err
+	}
+	return utilnet.QuicStreamToNetConn(stream, session), nil
+}
+
+func (qs *QUICTunnelSession) Close() {
+	qs.mu.Lock()
+	defer qs.mu.Unlock()
+	if qs.session != nil {
+		_ = qs.session.CloseWithError(0, "")
+		qs.session = nil
+	}
+	if qs.listenConn != nil {
+		_ = qs.listenConn.Close()
+		qs.listenConn = nil
+	}
+}

cmd/frpc/main.go

@@ -0,0 +1,24 @@
+// Copyright 2016 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	_ "github.com/fatedier/frp/assets/frpc"
+	"github.com/fatedier/frp/cmd/frpc/sub"
+)
+
+func main() {
+	sub.Execute()
+}

cmd/frpc/sub/http.go

@@ -0,0 +1,98 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/consts"
+)
+
+func init() {
+	RegisterCommonFlags(httpCmd)
+
+	httpCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	httpCmd.PersistentFlags().StringVarP(&localIP, "local_ip", "i", "127.0.0.1", "local ip")
+	httpCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	httpCmd.PersistentFlags().StringVarP(&customDomains, "custom_domain", "d", "", "custom domain")
+	httpCmd.PersistentFlags().StringVarP(&subDomain, "sd", "", "", "sub domain")
+	httpCmd.PersistentFlags().StringVarP(&locations, "locations", "", "", "locations")
+	httpCmd.PersistentFlags().StringVarP(&httpUser, "http_user", "", "", "http auth user")
+	httpCmd.PersistentFlags().StringVarP(&httpPwd, "http_pwd", "", "", "http auth password")
+	httpCmd.PersistentFlags().StringVarP(&hostHeaderRewrite, "host_header_rewrite", "", "", "host header rewrite")
+	httpCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	httpCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+	httpCmd.PersistentFlags().StringVarP(&bandwidthLimit, "bandwidth_limit", "", "", "bandwidth limit")
+	httpCmd.PersistentFlags().StringVarP(&bandwidthLimitMode, "bandwidth_limit_mode", "", config.BandwidthLimitModeClient, "bandwidth limit mode")
+
+	rootCmd.AddCommand(httpCmd)
+}
+
+var httpCmd = &cobra.Command{
+	Use:   "http",
+	Short: "Run frpc with a single http proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		clientCfg, err := parseClientCommonCfgFromCmd()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		cfg := &config.HTTPProxyConf{}
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+		cfg.ProxyName = prefix + proxyName
+		cfg.ProxyType = consts.HTTPProxy
+		cfg.LocalIP = localIP
+		cfg.LocalPort = localPort
+		cfg.CustomDomains = strings.Split(customDomains, ",")
+		cfg.SubDomain = subDomain
+		cfg.Locations = strings.Split(locations, ",")
+		cfg.HTTPUser = httpUser
+		cfg.HTTPPwd = httpPwd
+		cfg.HostHeaderRewrite = hostHeaderRewrite
+		cfg.UseEncryption = useEncryption
+		cfg.UseCompression = useCompression
+		cfg.BandwidthLimit, err = config.NewBandwidthQuantity(bandwidthLimit)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		cfg.BandwidthLimitMode = bandwidthLimitMode
+
+		err = cfg.ValidateForClient()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := map[string]config.ProxyConf{
+			cfg.ProxyName: cfg,
+		}
+		err = startService(clientCfg, proxyConfs, nil, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frpc/sub/https.go

@@ -0,0 +1,90 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/consts"
+)
+
+func init() {
+	RegisterCommonFlags(httpsCmd)
+
+	httpsCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	httpsCmd.PersistentFlags().StringVarP(&localIP, "local_ip", "i", "127.0.0.1", "local ip")
+	httpsCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	httpsCmd.PersistentFlags().StringVarP(&customDomains, "custom_domain", "d", "", "custom domain")
+	httpsCmd.PersistentFlags().StringVarP(&subDomain, "sd", "", "", "sub domain")
+	httpsCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	httpsCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+	httpsCmd.PersistentFlags().StringVarP(&bandwidthLimit, "bandwidth_limit", "", "", "bandwidth limit")
+	httpsCmd.PersistentFlags().StringVarP(&bandwidthLimitMode, "bandwidth_limit_mode", "", config.BandwidthLimitModeClient, "bandwidth limit mode")
+
+	rootCmd.AddCommand(httpsCmd)
+}
+
+var httpsCmd = &cobra.Command{
+	Use:   "https",
+	Short: "Run frpc with a single https proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		clientCfg, err := parseClientCommonCfgFromCmd()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		cfg := &config.HTTPSProxyConf{}
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+		cfg.ProxyName = prefix + proxyName
+		cfg.ProxyType = consts.HTTPSProxy
+		cfg.LocalIP = localIP
+		cfg.LocalPort = localPort
+		cfg.CustomDomains = strings.Split(customDomains, ",")
+		cfg.SubDomain = subDomain
+		cfg.UseEncryption = useEncryption
+		cfg.UseCompression = useCompression
+		cfg.BandwidthLimit, err = config.NewBandwidthQuantity(bandwidthLimit)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		cfg.BandwidthLimitMode = bandwidthLimitMode
+
+		err = cfg.ValidateForClient()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := map[string]config.ProxyConf{
+			cfg.ProxyName: cfg,
+		}
+		err = startService(clientCfg, proxyConfs, nil, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frpc/sub/nathole.go

@@ -0,0 +1,97 @@
+// Copyright 2023 The frp Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/nathole"
+)
+
+var (
+	natHoleSTUNServer string
+	natHoleLocalAddr  string
+)
+
+func init() {
+	RegisterCommonFlags(natholeCmd)
+
+	rootCmd.AddCommand(natholeCmd)
+	natholeCmd.AddCommand(natholeDiscoveryCmd)
+
+	natholeCmd.PersistentFlags().StringVarP(&natHoleSTUNServer, "nat_hole_stun_server", "", "", "STUN server address for nathole")
+	natholeCmd.PersistentFlags().StringVarP(&natHoleLocalAddr, "nat_hole_local_addr", "l", "", "local address to connect STUN server")
+}
+
+var natholeCmd = &cobra.Command{
+	Use:   "nathole",
+	Short: "Actions about nathole",
+}
+
+var natholeDiscoveryCmd = &cobra.Command{
+	Use:   "discover",
+	Short: "Discover nathole information from stun server",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		// ignore error here, because we can use command line pameters
+		cfg, _, _, err := config.ParseClientConfig(cfgFile)
+		if err != nil {
+			cfg = config.GetDefaultClientConf()
+		}
+		if natHoleSTUNServer != "" {
+			cfg.NatHoleSTUNServer = natHoleSTUNServer
+		}
+
+		if err := validateForNatHoleDiscovery(cfg); err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		addrs, localAddr, err := nathole.Discover([]string{cfg.NatHoleSTUNServer}, natHoleLocalAddr)
+		if err != nil {
+			fmt.Println("discover error:", err)
+			os.Exit(1)
+		}
+		if len(addrs) < 2 {
+			fmt.Printf("discover error: can not get enough addresses, need 2, got: %v\n", addrs)
+			os.Exit(1)
+		}
+
+		localIPs, _ := nathole.ListLocalIPsForNatHole(10)
+
+		natFeature, err := nathole.ClassifyNATFeature(addrs, localIPs)
+		if err != nil {
+			fmt.Println("classify nat feature error:", err)
+			os.Exit(1)
+		}
+		fmt.Println("STUN server:", cfg.NatHoleSTUNServer)
+		fmt.Println("Your NAT type is:", natFeature.NatType)
+		fmt.Println("Behavior is:", natFeature.Behavior)
+		fmt.Println("External address is:", addrs)
+		fmt.Println("Local address is:", localAddr.String())
+		fmt.Println("Public Network:", natFeature.PublicNetwork)
+		return nil
+	},
+}
+
+func validateForNatHoleDiscovery(cfg config.ClientCommonConf) error {
+	if cfg.NatHoleSTUNServer == "" {
+		return fmt.Errorf("nat_hole_stun_server can not be empty")
+	}
+	return nil
+}

cmd/frpc/sub/reload.go

@@ -0,0 +1,84 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"encoding/base64"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
+)
+
+func init() {
+	rootCmd.AddCommand(reloadCmd)
+}
+
+var reloadCmd = &cobra.Command{
+	Use:   "reload",
+	Short: "Hot-Reload frpc configuration",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		cfg, _, _, err := config.ParseClientConfig(cfgFile)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		err = reload(cfg)
+		if err != nil {
+			fmt.Printf("frpc reload error: %v\n", err)
+			os.Exit(1)
+		}
+		fmt.Printf("reload success\n")
+		return nil
+	},
+}
+
+func reload(clientCfg config.ClientCommonConf) error {
+	if clientCfg.AdminPort == 0 {
+		return fmt.Errorf("admin_port shoud be set if you want to use reload feature")
+	}
+
+	req, err := http.NewRequest("GET", "http://"+
+		clientCfg.AdminAddr+":"+fmt.Sprintf("%d", clientCfg.AdminPort)+"/api/reload", nil)
+	if err != nil {
+		return err
+	}
+
+	authStr := "Basic " + base64.StdEncoding.EncodeToString([]byte(clientCfg.AdminUser+":"+
+		clientCfg.AdminPwd))
+
+	req.Header.Add("Authorization", authStr)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == 200 {
+		return nil
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+	return fmt.Errorf("code [%d], %s", resp.StatusCode, strings.TrimSpace(string(body)))
+}

cmd/frpc/sub/root.go

@@ -0,0 +1,237 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"context"
+	"fmt"
+	"io/fs"
+	"net"
+	"os"
+	"os/signal"
+	"path/filepath"
+	"strconv"
+	"sync"
+	"syscall"
+	"time"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/client"
+	"github.com/fatedier/frp/pkg/auth"
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/util/log"
+	"github.com/fatedier/frp/pkg/util/version"
+)
+
+const (
+	CfgFileTypeIni = iota
+	CfgFileTypeCmd
+)
+
+var (
+	cfgFile     string
+	cfgDir      string
+	showVersion bool
+
+	serverAddr      string
+	user            string
+	protocol        string
+	token           string
+	logLevel        string
+	logFile         string
+	logMaxDays      int
+	disableLogColor bool
+	dnsServer       string
+
+	proxyName          string
+	localIP            string
+	localPort          int
+	remotePort         int
+	useEncryption      bool
+	useCompression     bool
+	bandwidthLimit     string
+	bandwidthLimitMode string
+	customDomains      string
+	subDomain          string
+	httpUser           string
+	httpPwd            string
+	locations          string
+	hostHeaderRewrite  string
+	role               string
+	sk                 string
+	multiplexer        string
+	serverName         string
+	bindAddr           string
+	bindPort           int
+
+	tlsEnable     bool
+	tlsServerName string
+)
+
+func init() {
+	rootCmd.PersistentFlags().StringVarP(&cfgFile, "config", "c", "./frpc.ini", "config file of frpc")
+	rootCmd.PersistentFlags().StringVarP(&cfgDir, "config_dir", "", "", "config directory, run one frpc service for each file in config directory")
+	rootCmd.PersistentFlags().BoolVarP(&showVersion, "version", "v", false, "version of frpc")
+}
+
+func RegisterCommonFlags(cmd *cobra.Command) {
+	cmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
+	cmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
+	cmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp, kcp, quic, websocket, wss")
+	cmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
+	cmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
+	cmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")
+	cmd.PersistentFlags().IntVarP(&logMaxDays, "log_max_days", "", 3, "log file reversed days")
+	cmd.PersistentFlags().BoolVarP(&disableLogColor, "disable_log_color", "", false, "disable log color in console")
+	cmd.PersistentFlags().BoolVarP(&tlsEnable, "tls_enable", "", true, "enable frpc tls")
+	cmd.PersistentFlags().StringVarP(&tlsServerName, "tls_server_name", "", "", "specify the custom server name of tls certificate")
+	cmd.PersistentFlags().StringVarP(&dnsServer, "dns_server", "", "", "specify dns server instead of using system default one")
+}
+
+var rootCmd = &cobra.Command{
+	Use:   "frpc",
+	Short: "frpc is the client of frp (https://github.com/fatedier/frp)",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		if showVersion {
+			fmt.Println(version.Full())
+			return nil
+		}
+
+		// If cfgDir is not empty, run multiple frpc service for each config file in cfgDir.
+		// Note that it's only designed for testing. It's not guaranteed to be stable.
+		if cfgDir != "" {
+			_ = runMultipleClients(cfgDir)
+			return nil
+		}
+
+		// Do not show command usage here.
+		err := runClient(cfgFile)
+		if err != nil {
+			os.Exit(1)
+		}
+		return nil
+	},
+}
+
+func runMultipleClients(cfgDir string) error {
+	var wg sync.WaitGroup
+	err := filepath.WalkDir(cfgDir, func(path string, d fs.DirEntry, err error) error {
+		if err != nil || d.IsDir() {
+			return nil
+		}
+		wg.Add(1)
+		time.Sleep(time.Millisecond)
+		go func() {
+			defer wg.Done()
+			err := runClient(path)
+			if err != nil {
+				fmt.Printf("frpc service error for config file [%s]\n", path)
+			}
+		}()
+		return nil
+	})
+	wg.Wait()
+	return err
+}
+
+func Execute() {
+	if err := rootCmd.Execute(); err != nil {
+		os.Exit(1)
+	}
+}
+
+func handleTermSignal(svr *client.Service) {
+	ch := make(chan os.Signal, 1)
+	signal.Notify(ch, syscall.SIGINT, syscall.SIGTERM)
+	<-ch
+	svr.GracefulClose(500 * time.Millisecond)
+}
+
+func parseClientCommonCfgFromCmd() (cfg config.ClientCommonConf, err error) {
+	cfg = config.GetDefaultClientConf()
+
+	ipStr, portStr, err := net.SplitHostPort(serverAddr)
+	if err != nil {
+		err = fmt.Errorf("invalid server_addr: %v", err)
+		return
+	}
+
+	cfg.ServerAddr = ipStr
+	cfg.ServerPort, err = strconv.Atoi(portStr)
+	if err != nil {
+		err = fmt.Errorf("invalid server_addr: %v", err)
+		return
+	}
+
+	cfg.User = user
+	cfg.Protocol = protocol
+	cfg.LogLevel = logLevel
+	cfg.LogFile = logFile
+	cfg.LogMaxDays = int64(logMaxDays)
+	cfg.DisableLogColor = disableLogColor
+	cfg.DNSServer = dnsServer
+
+	// Only token authentication is supported in cmd mode
+	cfg.ClientConfig = auth.GetDefaultClientConf()
+	cfg.Token = token
+	cfg.TLSEnable = tlsEnable
+	cfg.TLSServerName = tlsServerName
+
+	cfg.Complete()
+	if err = cfg.Validate(); err != nil {
+		err = fmt.Errorf("parse config error: %v", err)
+		return
+	}
+	return
+}
+
+func runClient(cfgFilePath string) error {
+	cfg, pxyCfgs, visitorCfgs, err := config.ParseClientConfig(cfgFilePath)
+	if err != nil {
+		fmt.Println(err)
+		return err
+	}
+	return startService(cfg, pxyCfgs, visitorCfgs, cfgFilePath)
+}
+
+func startService(
+	cfg config.ClientCommonConf,
+	pxyCfgs map[string]config.ProxyConf,
+	visitorCfgs map[string]config.VisitorConf,
+	cfgFile string,
+) (err error) {
+	log.InitLog(cfg.LogWay, cfg.LogFile, cfg.LogLevel,
+		cfg.LogMaxDays, cfg.DisableLogColor)
+
+	if cfgFile != "" {
+		log.Info("start frpc service for config file [%s]", cfgFile)
+		defer log.Info("frpc service for config file [%s] stopped", cfgFile)
+	}
+	svr, errRet := client.NewService(cfg, pxyCfgs, visitorCfgs, cfgFile)
+	if errRet != nil {
+		err = errRet
+		return
+	}
+
+	shouldGracefulClose := cfg.Protocol == "kcp" || cfg.Protocol == "quic"
+	// Capture the exit signal if we use kcp or quic.
+	if shouldGracefulClose {
+		go handleTermSignal(svr)
+	}
+
+	_ = svr.Run(context.Background())
+	return
+}

cmd/frpc/sub/status.go

@@ -0,0 +1,107 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/rodaine/table"
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/client"
+	"github.com/fatedier/frp/pkg/config"
+)
+
+func init() {
+	rootCmd.AddCommand(statusCmd)
+}
+
+var statusCmd = &cobra.Command{
+	Use:   "status",
+	Short: "Overview of all proxies status",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		cfg, _, _, err := config.ParseClientConfig(cfgFile)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		if err = status(cfg); err != nil {
+			fmt.Printf("frpc get status error: %v\n", err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}
+
+func status(clientCfg config.ClientCommonConf) error {
+	if clientCfg.AdminPort == 0 {
+		return fmt.Errorf("admin_port shoud be set if you want to get proxy status")
+	}
+
+	req, err := http.NewRequest("GET", "http://"+
+		clientCfg.AdminAddr+":"+fmt.Sprintf("%d", clientCfg.AdminPort)+"/api/status", nil)
+	if err != nil {
+		return err
+	}
+
+	authStr := "Basic " + base64.StdEncoding.EncodeToString([]byte(clientCfg.AdminUser+":"+
+		clientCfg.AdminPwd))
+
+	req.Header.Add("Authorization", authStr)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		return fmt.Errorf("admin api status code [%d]", resp.StatusCode)
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+	res := make(client.StatusResp)
+	err = json.Unmarshal(body, &res)
+	if err != nil {
+		return fmt.Errorf("unmarshal http response error: %s", strings.TrimSpace(string(body)))
+	}
+
+	fmt.Println("Proxy Status...")
+	types := []string{"tcp", "udp", "tcpmux", "http", "https", "stcp", "sudp", "xtcp"}
+	for _, pxyType := range types {
+		arrs := res[pxyType]
+		if len(arrs) == 0 {
+			continue
+		}
+
+		fmt.Println(strings.ToUpper(pxyType))
+		tbl := table.New("Name", "Status", "LocalAddr", "Plugin", "RemoteAddr", "Error")
+		for _, ps := range arrs {
+			tbl.AddRow(ps.Name, ps.Status, ps.LocalAddr, ps.Plugin, ps.RemoteAddr, ps.Err)
+		}
+		tbl.Print()
+		fmt.Println("")
+	}
+	return nil
+}

cmd/frpc/sub/stcp.go

@@ -0,0 +1,116 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/consts"
+)
+
+func init() {
+	RegisterCommonFlags(stcpCmd)
+
+	stcpCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	stcpCmd.PersistentFlags().StringVarP(&role, "role", "", "server", "role")
+	stcpCmd.PersistentFlags().StringVarP(&sk, "sk", "", "", "secret key")
+	stcpCmd.PersistentFlags().StringVarP(&serverName, "server_name", "", "", "server name")
+	stcpCmd.PersistentFlags().StringVarP(&localIP, "local_ip", "i", "127.0.0.1", "local ip")
+	stcpCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	stcpCmd.PersistentFlags().StringVarP(&bindAddr, "bind_addr", "", "", "bind addr")
+	stcpCmd.PersistentFlags().IntVarP(&bindPort, "bind_port", "", 0, "bind port")
+	stcpCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	stcpCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+	stcpCmd.PersistentFlags().StringVarP(&bandwidthLimit, "bandwidth_limit", "", "", "bandwidth limit")
+	stcpCmd.PersistentFlags().StringVarP(&bandwidthLimitMode, "bandwidth_limit_mode", "", config.BandwidthLimitModeClient, "bandwidth limit mode")
+
+	rootCmd.AddCommand(stcpCmd)
+}
+
+var stcpCmd = &cobra.Command{
+	Use:   "stcp",
+	Short: "Run frpc with a single stcp proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		clientCfg, err := parseClientCommonCfgFromCmd()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := make(map[string]config.ProxyConf)
+		visitorConfs := make(map[string]config.VisitorConf)
+
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+
+		switch role {
+		case "server":
+			cfg := &config.STCPProxyConf{}
+			cfg.ProxyName = prefix + proxyName
+			cfg.ProxyType = consts.STCPProxy
+			cfg.UseEncryption = useEncryption
+			cfg.UseCompression = useCompression
+			cfg.Role = role
+			cfg.Sk = sk
+			cfg.LocalIP = localIP
+			cfg.LocalPort = localPort
+			cfg.BandwidthLimit, err = config.NewBandwidthQuantity(bandwidthLimit)
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			cfg.BandwidthLimitMode = bandwidthLimitMode
+			err = cfg.ValidateForClient()
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			proxyConfs[cfg.ProxyName] = cfg
+		case "visitor":
+			cfg := &config.STCPVisitorConf{}
+			cfg.ProxyName = prefix + proxyName
+			cfg.ProxyType = consts.STCPProxy
+			cfg.UseEncryption = useEncryption
+			cfg.UseCompression = useCompression
+			cfg.Role = role
+			cfg.Sk = sk
+			cfg.ServerName = serverName
+			cfg.BindAddr = bindAddr
+			cfg.BindPort = bindPort
+			err = cfg.Validate()
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			visitorConfs[cfg.ProxyName] = cfg
+		default:
+			fmt.Println("invalid role")
+			os.Exit(1)
+		}
+
+		err = startService(clientCfg, proxyConfs, visitorConfs, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frpc/sub/stop.go

@@ -0,0 +1,84 @@
+// Copyright 2023 The frp Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"encoding/base64"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
+)
+
+func init() {
+	rootCmd.AddCommand(stopCmd)
+}
+
+var stopCmd = &cobra.Command{
+	Use:   "stop",
+	Short: "Stop the running frpc",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		cfg, _, _, err := config.ParseClientConfig(cfgFile)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		err = stopClient(cfg)
+		if err != nil {
+			fmt.Printf("frpc stop error: %v\n", err)
+			os.Exit(1)
+		}
+		fmt.Printf("stop success\n")
+		return nil
+	},
+}
+
+func stopClient(clientCfg config.ClientCommonConf) error {
+	if clientCfg.AdminPort == 0 {
+		return fmt.Errorf("admin_port shoud be set if you want to use stop feature")
+	}
+
+	req, err := http.NewRequest("POST", "http://"+
+		clientCfg.AdminAddr+":"+fmt.Sprintf("%d", clientCfg.AdminPort)+"/api/stop", nil)
+	if err != nil {
+		return err
+	}
+
+	authStr := "Basic " + base64.StdEncoding.EncodeToString([]byte(clientCfg.AdminUser+":"+
+		clientCfg.AdminPwd))
+
+	req.Header.Add("Authorization", authStr)
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode == 200 {
+		return nil
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+	return fmt.Errorf("code [%d], %s", resp.StatusCode, strings.TrimSpace(string(body)))
+}

cmd/frpc/sub/sudp.go

@@ -0,0 +1,115 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/consts"
+)
+
+func init() {
+	RegisterCommonFlags(sudpCmd)
+
+	sudpCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	sudpCmd.PersistentFlags().StringVarP(&role, "role", "", "server", "role")
+	sudpCmd.PersistentFlags().StringVarP(&sk, "sk", "", "", "secret key")
+	sudpCmd.PersistentFlags().StringVarP(&serverName, "server_name", "", "", "server name")
+	sudpCmd.PersistentFlags().StringVarP(&localIP, "local_ip", "i", "127.0.0.1", "local ip")
+	sudpCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	sudpCmd.PersistentFlags().StringVarP(&bindAddr, "bind_addr", "", "", "bind addr")
+	sudpCmd.PersistentFlags().IntVarP(&bindPort, "bind_port", "", 0, "bind port")
+	sudpCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	sudpCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+	sudpCmd.PersistentFlags().StringVarP(&bandwidthLimit, "bandwidth_limit", "", "", "bandwidth limit")
+	sudpCmd.PersistentFlags().StringVarP(&bandwidthLimitMode, "bandwidth_limit_mode", "", config.BandwidthLimitModeClient, "bandwidth limit mode")
+
+	rootCmd.AddCommand(sudpCmd)
+}
+
+var sudpCmd = &cobra.Command{
+	Use:   "sudp",
+	Short: "Run frpc with a single sudp proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		clientCfg, err := parseClientCommonCfgFromCmd()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := make(map[string]config.ProxyConf)
+		visitorConfs := make(map[string]config.VisitorConf)
+
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+
+		switch role {
+		case "server":
+			cfg := &config.SUDPProxyConf{}
+			cfg.ProxyName = prefix + proxyName
+			cfg.ProxyType = consts.SUDPProxy
+			cfg.UseEncryption = useEncryption
+			cfg.UseCompression = useCompression
+			cfg.Role = role
+			cfg.Sk = sk
+			cfg.LocalIP = localIP
+			cfg.LocalPort = localPort
+			cfg.BandwidthLimit, err = config.NewBandwidthQuantity(bandwidthLimit)
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			cfg.BandwidthLimitMode = bandwidthLimitMode
+			err = cfg.ValidateForClient()
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			proxyConfs[cfg.ProxyName] = cfg
+		case "visitor":
+			cfg := &config.SUDPVisitorConf{}
+			cfg.ProxyName = prefix + proxyName
+			cfg.ProxyType = consts.SUDPProxy
+			cfg.UseEncryption = useEncryption
+			cfg.UseCompression = useCompression
+			cfg.Role = role
+			cfg.Sk = sk
+			cfg.ServerName = serverName
+			cfg.BindAddr = bindAddr
+			cfg.BindPort = bindPort
+			err = cfg.Validate()
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			visitorConfs[cfg.ProxyName] = cfg
+		default:
+			fmt.Println("invalid role")
+			os.Exit(1)
+		}
+
+		err = startService(clientCfg, proxyConfs, visitorConfs, "")
+		if err != nil {
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frpc/sub/tcp.go

@@ -0,0 +1,87 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/consts"
+)
+
+func init() {
+	RegisterCommonFlags(tcpCmd)
+
+	tcpCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	tcpCmd.PersistentFlags().StringVarP(&localIP, "local_ip", "i", "127.0.0.1", "local ip")
+	tcpCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	tcpCmd.PersistentFlags().IntVarP(&remotePort, "remote_port", "r", 0, "remote port")
+	tcpCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	tcpCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+	tcpCmd.PersistentFlags().StringVarP(&bandwidthLimit, "bandwidth_limit", "", "", "bandwidth limit")
+	tcpCmd.PersistentFlags().StringVarP(&bandwidthLimitMode, "bandwidth_limit_mode", "", config.BandwidthLimitModeClient, "bandwidth limit mode")
+
+	rootCmd.AddCommand(tcpCmd)
+}
+
+var tcpCmd = &cobra.Command{
+	Use:   "tcp",
+	Short: "Run frpc with a single tcp proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		clientCfg, err := parseClientCommonCfgFromCmd()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		cfg := &config.TCPProxyConf{}
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+		cfg.ProxyName = prefix + proxyName
+		cfg.ProxyType = consts.TCPProxy
+		cfg.LocalIP = localIP
+		cfg.LocalPort = localPort
+		cfg.RemotePort = remotePort
+		cfg.UseEncryption = useEncryption
+		cfg.UseCompression = useCompression
+		cfg.BandwidthLimit, err = config.NewBandwidthQuantity(bandwidthLimit)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		cfg.BandwidthLimitMode = bandwidthLimitMode
+
+		err = cfg.ValidateForClient()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := map[string]config.ProxyConf{
+			cfg.ProxyName: cfg,
+		}
+		err = startService(clientCfg, proxyConfs, nil, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frpc/sub/tcpmux.go

@@ -0,0 +1,92 @@
+// Copyright 2020 guylewin, guy@lewin.co.il
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/consts"
+)
+
+func init() {
+	RegisterCommonFlags(tcpMuxCmd)
+
+	tcpMuxCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	tcpMuxCmd.PersistentFlags().StringVarP(&localIP, "local_ip", "i", "127.0.0.1", "local ip")
+	tcpMuxCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	tcpMuxCmd.PersistentFlags().StringVarP(&customDomains, "custom_domain", "d", "", "custom domain")
+	tcpMuxCmd.PersistentFlags().StringVarP(&subDomain, "sd", "", "", "sub domain")
+	tcpMuxCmd.PersistentFlags().StringVarP(&multiplexer, "mux", "", "", "multiplexer")
+	tcpMuxCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	tcpMuxCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+	tcpMuxCmd.PersistentFlags().StringVarP(&bandwidthLimit, "bandwidth_limit", "", "", "bandwidth limit")
+	tcpMuxCmd.PersistentFlags().StringVarP(&bandwidthLimitMode, "bandwidth_limit_mode", "", config.BandwidthLimitModeClient, "bandwidth limit mode")
+
+	rootCmd.AddCommand(tcpMuxCmd)
+}
+
+var tcpMuxCmd = &cobra.Command{
+	Use:   "tcpmux",
+	Short: "Run frpc with a single tcpmux proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		clientCfg, err := parseClientCommonCfgFromCmd()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		cfg := &config.TCPMuxProxyConf{}
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+		cfg.ProxyName = prefix + proxyName
+		cfg.ProxyType = consts.TCPMuxProxy
+		cfg.LocalIP = localIP
+		cfg.LocalPort = localPort
+		cfg.CustomDomains = strings.Split(customDomains, ",")
+		cfg.SubDomain = subDomain
+		cfg.Multiplexer = multiplexer
+		cfg.UseEncryption = useEncryption
+		cfg.UseCompression = useCompression
+		cfg.BandwidthLimit, err = config.NewBandwidthQuantity(bandwidthLimit)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		cfg.BandwidthLimitMode = bandwidthLimitMode
+
+		err = cfg.ValidateForClient()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := map[string]config.ProxyConf{
+			cfg.ProxyName: cfg,
+		}
+		err = startService(clientCfg, proxyConfs, nil, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frpc/sub/udp.go

@@ -0,0 +1,87 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/consts"
+)
+
+func init() {
+	RegisterCommonFlags(udpCmd)
+
+	udpCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	udpCmd.PersistentFlags().StringVarP(&localIP, "local_ip", "i", "127.0.0.1", "local ip")
+	udpCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	udpCmd.PersistentFlags().IntVarP(&remotePort, "remote_port", "r", 0, "remote port")
+	udpCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	udpCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+	udpCmd.PersistentFlags().StringVarP(&bandwidthLimit, "bandwidth_limit", "", "", "bandwidth limit")
+	udpCmd.PersistentFlags().StringVarP(&bandwidthLimitMode, "bandwidth_limit_mode", "", config.BandwidthLimitModeClient, "bandwidth limit mode")
+
+	rootCmd.AddCommand(udpCmd)
+}
+
+var udpCmd = &cobra.Command{
+	Use:   "udp",
+	Short: "Run frpc with a single udp proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		clientCfg, err := parseClientCommonCfgFromCmd()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		cfg := &config.UDPProxyConf{}
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+		cfg.ProxyName = prefix + proxyName
+		cfg.ProxyType = consts.UDPProxy
+		cfg.LocalIP = localIP
+		cfg.LocalPort = localPort
+		cfg.RemotePort = remotePort
+		cfg.UseEncryption = useEncryption
+		cfg.UseCompression = useCompression
+		cfg.BandwidthLimit, err = config.NewBandwidthQuantity(bandwidthLimit)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		cfg.BandwidthLimitMode = bandwidthLimitMode
+
+		err = cfg.ValidateForClient()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := map[string]config.ProxyConf{
+			cfg.ProxyName: cfg,
+		}
+		err = startService(clientCfg, proxyConfs, nil, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frpc/sub/verify.go

@@ -0,0 +1,43 @@
+// Copyright 2021 The frp Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
+)
+
+func init() {
+	rootCmd.AddCommand(verifyCmd)
+}
+
+var verifyCmd = &cobra.Command{
+	Use:   "verify",
+	Short: "Verify that the configures is valid",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		_, _, _, err := config.ParseClientConfig(cfgFile)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		fmt.Printf("frpc: the configuration file %s syntax is ok\n", cfgFile)
+		return nil
+	},
+}

cmd/frpc/sub/xtcp.go

@@ -0,0 +1,116 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/consts"
+)
+
+func init() {
+	RegisterCommonFlags(xtcpCmd)
+
+	xtcpCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	xtcpCmd.PersistentFlags().StringVarP(&role, "role", "", "server", "role")
+	xtcpCmd.PersistentFlags().StringVarP(&sk, "sk", "", "", "secret key")
+	xtcpCmd.PersistentFlags().StringVarP(&serverName, "server_name", "", "", "server name")
+	xtcpCmd.PersistentFlags().StringVarP(&localIP, "local_ip", "i", "127.0.0.1", "local ip")
+	xtcpCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	xtcpCmd.PersistentFlags().StringVarP(&bindAddr, "bind_addr", "", "", "bind addr")
+	xtcpCmd.PersistentFlags().IntVarP(&bindPort, "bind_port", "", 0, "bind port")
+	xtcpCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	xtcpCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+	xtcpCmd.PersistentFlags().StringVarP(&bandwidthLimit, "bandwidth_limit", "", "", "bandwidth limit")
+	xtcpCmd.PersistentFlags().StringVarP(&bandwidthLimitMode, "bandwidth_limit_mode", "", config.BandwidthLimitModeClient, "bandwidth limit mode")
+
+	rootCmd.AddCommand(xtcpCmd)
+}
+
+var xtcpCmd = &cobra.Command{
+	Use:   "xtcp",
+	Short: "Run frpc with a single xtcp proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		clientCfg, err := parseClientCommonCfgFromCmd()
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := make(map[string]config.ProxyConf)
+		visitorConfs := make(map[string]config.VisitorConf)
+
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+
+		switch role {
+		case "server":
+			cfg := &config.XTCPProxyConf{}
+			cfg.ProxyName = prefix + proxyName
+			cfg.ProxyType = consts.XTCPProxy
+			cfg.UseEncryption = useEncryption
+			cfg.UseCompression = useCompression
+			cfg.Role = role
+			cfg.Sk = sk
+			cfg.LocalIP = localIP
+			cfg.LocalPort = localPort
+			cfg.BandwidthLimit, err = config.NewBandwidthQuantity(bandwidthLimit)
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			cfg.BandwidthLimitMode = bandwidthLimitMode
+			err = cfg.ValidateForClient()
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			proxyConfs[cfg.ProxyName] = cfg
+		case "visitor":
+			cfg := &config.XTCPVisitorConf{}
+			cfg.ProxyName = prefix + proxyName
+			cfg.ProxyType = consts.XTCPProxy
+			cfg.UseEncryption = useEncryption
+			cfg.UseCompression = useCompression
+			cfg.Role = role
+			cfg.Sk = sk
+			cfg.ServerName = serverName
+			cfg.BindAddr = bindAddr
+			cfg.BindPort = bindPort
+			err = cfg.Validate()
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			visitorConfs[cfg.ProxyName] = cfg
+		default:
+			fmt.Println("invalid role")
+			os.Exit(1)
+		}
+
+		err = startService(clientCfg, proxyConfs, visitorConfs, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}

cmd/frps/main.go

@@ -0,0 +1,33 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"math/rand"
+	"time"
+
+	"github.com/fatedier/golib/crypto"
+
+	_ "github.com/fatedier/frp/assets/frps"
+	_ "github.com/fatedier/frp/pkg/metrics"
+)
+
+func main() {
+	crypto.DefaultSalt = "frp"
+	// TODO: remove this when we drop support for go1.19
+	rand.Seed(time.Now().UnixNano())
+
+	Execute()
+}

cmd/frps/root.go

@@ -0,0 +1,216 @@
+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/auth"
+	"github.com/fatedier/frp/pkg/config"
+	"github.com/fatedier/frp/pkg/util/log"
+	"github.com/fatedier/frp/pkg/util/util"
+	"github.com/fatedier/frp/pkg/util/version"
+	"github.com/fatedier/frp/server"
+)
+
+const (
+	CfgFileTypeIni = iota
+	CfgFileTypeCmd
+)
+
+var (
+	cfgFile     string
+	showVersion bool
+
+	bindAddr             string
+	bindPort             int
+	kcpBindPort          int
+	proxyBindAddr        string
+	vhostHTTPPort        int
+	vhostHTTPSPort       int
+	vhostHTTPTimeout     int64
+	dashboardAddr        string
+	dashboardPort        int
+	dashboardUser        string
+	dashboardPwd         string
+	enablePrometheus     bool
+	logFile              string
+	logLevel             string
+	logMaxDays           int64
+	disableLogColor      bool
+	token                string
+	subDomainHost        string
+	allowPorts           string
+	maxPortsPerClient    int64
+	tlsOnly              bool
+	dashboardTLSMode     bool
+	dashboardTLSCertFile string
+	dashboardTLSKeyFile  string
+)
+
+func init() {
+	rootCmd.PersistentFlags().StringVarP(&cfgFile, "config", "c", "", "config file of frps")
+	rootCmd.PersistentFlags().BoolVarP(&showVersion, "version", "v", false, "version of frps")
+
+	rootCmd.PersistentFlags().StringVarP(&bindAddr, "bind_addr", "", "0.0.0.0", "bind address")
+	rootCmd.PersistentFlags().IntVarP(&bindPort, "bind_port", "p", 7000, "bind port")
+	rootCmd.PersistentFlags().IntVarP(&kcpBindPort, "kcp_bind_port", "", 0, "kcp bind udp port")
+	rootCmd.PersistentFlags().StringVarP(&proxyBindAddr, "proxy_bind_addr", "", "0.0.0.0", "proxy bind address")
+	rootCmd.PersistentFlags().IntVarP(&vhostHTTPPort, "vhost_http_port", "", 0, "vhost http port")
+	rootCmd.PersistentFlags().IntVarP(&vhostHTTPSPort, "vhost_https_port", "", 0, "vhost https port")
+	rootCmd.PersistentFlags().Int64VarP(&vhostHTTPTimeout, "vhost_http_timeout", "", 60, "vhost http response header timeout")
+	rootCmd.PersistentFlags().StringVarP(&dashboardAddr, "dashboard_addr", "", "0.0.0.0", "dashboard address")
+	rootCmd.PersistentFlags().IntVarP(&dashboardPort, "dashboard_port", "", 0, "dashboard port")
+	rootCmd.PersistentFlags().StringVarP(&dashboardUser, "dashboard_user", "", "admin", "dashboard user")
+	rootCmd.PersistentFlags().StringVarP(&dashboardPwd, "dashboard_pwd", "", "admin", "dashboard password")
+	rootCmd.PersistentFlags().BoolVarP(&enablePrometheus, "enable_prometheus", "", false, "enable prometheus dashboard")
+	rootCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "log file")
+	rootCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
+	rootCmd.PersistentFlags().Int64VarP(&logMaxDays, "log_max_days", "", 3, "log max days")
+	rootCmd.PersistentFlags().BoolVarP(&disableLogColor, "disable_log_color", "", false, "disable log color in console")
+
+	rootCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
+	rootCmd.PersistentFlags().StringVarP(&subDomainHost, "subdomain_host", "", "", "subdomain host")
+	rootCmd.PersistentFlags().StringVarP(&allowPorts, "allow_ports", "", "", "allow ports")
+	rootCmd.PersistentFlags().Int64VarP(&maxPortsPerClient, "max_ports_per_client", "", 0, "max ports per client")
+	rootCmd.PersistentFlags().BoolVarP(&tlsOnly, "tls_only", "", false, "frps tls only")
+	rootCmd.PersistentFlags().BoolVarP(&dashboardTLSMode, "dashboard_tls_mode", "", false, "dashboard tls mode")
+	rootCmd.PersistentFlags().StringVarP(&dashboardTLSCertFile, "dashboard_tls_cert_file", "", "", "dashboard tls cert file")
+	rootCmd.PersistentFlags().StringVarP(&dashboardTLSKeyFile, "dashboard_tls_key_file", "", "", "dashboard tls key file")
+}
+
+var rootCmd = &cobra.Command{
+	Use:   "frps",
+	Short: "frps is the server of frp (https://github.com/fatedier/frp)",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		if showVersion {
+			fmt.Println(version.Full())
+			return nil
+		}
+
+		var cfg config.ServerCommonConf
+		var err error
+		if cfgFile != "" {
+			var content []byte
+			content, err = config.GetRenderedConfFromFile(cfgFile)
+			if err != nil {
+				return err
+			}
+			cfg, err = parseServerCommonCfg(CfgFileTypeIni, content)
+		} else {
+			cfg, err = parseServerCommonCfg(CfgFileTypeCmd, nil)
+		}
+		if err != nil {
+			return err
+		}
+
+		err = runServer(cfg)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+		return nil
+	},
+}
+
+func Execute() {
+	if err := rootCmd.Execute(); err != nil {
+		os.Exit(1)
+	}
+}
+
+func parseServerCommonCfg(fileType int, source []byte) (cfg config.ServerCommonConf, err error) {
+	if fileType == CfgFileTypeIni {
+		cfg, err = config.UnmarshalServerConfFromIni(source)
+	} else if fileType == CfgFileTypeCmd {
+		cfg, err = parseServerCommonCfgFromCmd()
+	}
+	if err != nil {
+		return
+	}
+	cfg.Complete()
+	err = cfg.Validate()
+	if err != nil {
+		err = fmt.Errorf("parse config error: %v", err)
+		return
+	}
+	return
+}
+
+func parseServerCommonCfgFromCmd() (cfg config.ServerCommonConf, err error) {
+	cfg = config.GetDefaultServerConf()
+
+	cfg.BindAddr = bindAddr
+	cfg.BindPort = bindPort
+	cfg.KCPBindPort = kcpBindPort
+	cfg.ProxyBindAddr = proxyBindAddr
+	cfg.VhostHTTPPort = vhostHTTPPort
+	cfg.VhostHTTPSPort = vhostHTTPSPort
+	cfg.VhostHTTPTimeout = vhostHTTPTimeout
+	cfg.DashboardAddr = dashboardAddr
+	cfg.DashboardPort = dashboardPort
+	cfg.DashboardUser = dashboardUser
+	cfg.DashboardPwd = dashboardPwd
+	cfg.EnablePrometheus = enablePrometheus
+	cfg.DashboardTLSCertFile = dashboardTLSCertFile
+	cfg.DashboardTLSKeyFile = dashboardTLSKeyFile
+	cfg.DashboardTLSMode = dashboardTLSMode
+	cfg.LogFile = logFile
+	cfg.LogLevel = logLevel
+	cfg.LogMaxDays = logMaxDays
+	cfg.SubDomainHost = subDomainHost
+	cfg.TLSOnly = tlsOnly
+
+	// Only token authentication is supported in cmd mode
+	cfg.ServerConfig = auth.GetDefaultServerConf()
+	cfg.Token = token
+	if len(allowPorts) > 0 {
+		// e.g. 1000-2000,2001,2002,3000-4000
+		ports, errRet := util.ParseRangeNumbers(allowPorts)
+		if errRet != nil {
+			err = fmt.Errorf("parse conf error: allow_ports: %v", errRet)
+			return
+		}
+
+		for _, port := range ports {
+			cfg.AllowPorts[int(port)] = struct{}{}
+		}
+	}
+	cfg.MaxPortsPerClient = maxPortsPerClient
+	cfg.DisableLogColor = disableLogColor
+	return
+}
+
+func runServer(cfg config.ServerCommonConf) (err error) {
+	log.InitLog(cfg.LogWay, cfg.LogFile, cfg.LogLevel, cfg.LogMaxDays, cfg.DisableLogColor)
+
+	if cfgFile != "" {
+		log.Info("frps uses config file: %s", cfgFile)
+	} else {
+		log.Info("frps uses command line arguments for config")
+	}
+
+	svr, err := server.NewService(cfg)
+	if err != nil {
+		return err
+	}
+	log.Info("frps started successfully")
+	svr.Run(context.Background())
+	return
+}

cmd/frps/verify.go

@@ -0,0 +1,53 @@
+// Copyright 2021 The frp Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/pkg/config"
+)
+
+func init() {
+	rootCmd.AddCommand(verifyCmd)
+}
+
+var verifyCmd = &cobra.Command{
+	Use:   "verify",
+	Short: "Verify that the configures is valid",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		if cfgFile == "" {
+			fmt.Println("no config file is specified")
+			return nil
+		}
+		iniContent, err := config.GetRenderedConfFromFile(cfgFile)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		_, err = parseServerCommonCfg(CfgFileTypeIni, iniContent)
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		fmt.Printf("frps: the configuration file %s syntax is ok\n", cfgFile)
+		return nil
+	},
+}

conf/frpc.ini

@@ -1,14 +1,9 @@
-# common是必须的section
 [common]
 server_addr = 127.0.0.1
 server_port = 7000
-log_file = ./frpc.log
-# debug, info, warn, error
-log_level = debug
-# file, console
-log_way = console
 
-# test1即为name
-[test1]
-passwd = 123
+[ssh]
+type = tcp
+local_ip = 127.0.0.1
 local_port = 22
+remote_port = 6000

conf/frpc_full.ini

@@ -0,0 +1,389 @@
+# [common] is integral section
+[common]
+# A literal address or host name for IPv6 must be enclosed
+# in square brackets, as in "[::1]:80", "[ipv6-host]:http" or "[ipv6-host%zone]:80"
+# For single "server_addr" field, no need square brackets, like "server_addr = ::".
+server_addr = 0.0.0.0
+server_port = 7000
+
+# STUN server to help penetrate NAT hole.
+# nat_hole_stun_server = stun.easyvoip.com:3478
+
+# The maximum amount of time a dial to server will wait for a connect to complete. Default value is 10 seconds.
+# dial_server_timeout = 10
+
+# dial_server_keepalive specifies the interval between keep-alive probes for an active network connection between frpc and frps.
+# If negative, keep-alive probes are disabled.
+# dial_server_keepalive = 7200
+
+# if you want to connect frps by http proxy or socks5 proxy or ntlm proxy, you can set http_proxy here or in global environment variables
+# it only works when protocol is tcp
+# http_proxy = http://user:passwd@192.168.1.128:8080
+# http_proxy = socks5://user:passwd@192.168.1.128:1080
+# http_proxy = ntlm://user:passwd@192.168.1.128:2080
+
+# console or real logFile path like ./frpc.log
+log_file = ./frpc.log
+
+# trace, debug, info, warn, error
+log_level = info
+
+log_max_days = 3
+
+# disable log colors when log_file is console, default is false
+disable_log_color = false
+
+# for authentication, should be same as your frps.ini
+# authenticate_heartbeats specifies whether to include authentication token in heartbeats sent to frps. By default, this value is false.
+authenticate_heartbeats = false
+
+# authenticate_new_work_conns specifies whether to include authentication token in new work connections sent to frps. By default, this value is false.
+authenticate_new_work_conns = false
+
+# auth token
+token = 12345678
+
+authentication_method = 
+
+# oidc_client_id specifies the client ID to use to get a token in OIDC authentication if AuthenticationMethod == "oidc".
+# By default, this value is "".
+oidc_client_id =
+
+# oidc_client_secret specifies the client secret to use to get a token in OIDC authentication if AuthenticationMethod == "oidc".
+# By default, this value is "".
+oidc_client_secret =
+
+# oidc_audience specifies the audience of the token in OIDC authentication if AuthenticationMethod == "oidc". By default, this value is "".
+oidc_audience =
+
+# oidc_scope specifies the permisssions of the token in OIDC authentication if AuthenticationMethod == "oidc". By default, this value is "".
+oidc_scope =
+
+# oidc_token_endpoint_url specifies the URL which implements OIDC Token Endpoint.
+# It will be used to get an OIDC token if AuthenticationMethod == "oidc". By default, this value is "".
+oidc_token_endpoint_url =
+
+# oidc_additional_xxx specifies additional parameters to be sent to the OIDC Token Endpoint.
+# For example, if you want to specify the "audience" parameter, you can set as follow.
+# frp will add "audience=<value>" "var1=<value>" to the additional parameters.
+# oidc_additional_audience = https://dev.auth.com/api/v2/
+# oidc_additional_var1 = foobar
+
+# set admin address for control frpc's action by http api such as reload
+admin_addr = 127.0.0.1
+admin_port = 7400
+admin_user = admin
+admin_pwd = admin
+# Admin assets directory. By default, these assets are bundled with frpc.
+# assets_dir = ./static
+
+# connections will be established in advance, default value is zero
+pool_count = 5
+
+# if tcp stream multiplexing is used, default is true, it must be same with frps
+# tcp_mux = true
+
+# specify keep alive interval for tcp mux.
+# only valid if tcp_mux is true.
+# tcp_mux_keepalive_interval = 60
+
+# your proxy name will be changed to {user}.{proxy}
+user = your_name
+
+# decide if exit program when first login failed, otherwise continuous relogin to frps
+# default is true
+login_fail_exit = true
+
+# communication protocol used to connect to server
+# supports tcp, kcp, quic, websocket and wss now, default is tcp
+protocol = tcp
+
+# set client binding ip when connect server, default is empty.
+# only when protocol = tcp or websocket, the value will be used.
+connect_server_local_ip = 0.0.0.0
+
+# quic protocol options
+# quic_keepalive_period = 10
+# quic_max_idle_timeout = 30
+# quic_max_incoming_streams = 100000
+
+# If tls_enable is true, frpc will connect frps by tls.
+# Since v0.50.0, the default value has been changed to true, and tls is enabled by default.
+tls_enable = true
+
+# tls_cert_file = client.crt
+# tls_key_file = client.key
+# tls_trusted_ca_file = ca.crt
+# tls_server_name = example.com
+
+# specify a dns server, so frpc will use this instead of default one
+# dns_server = 8.8.8.8
+
+# proxy names you want to start separated by ','
+# default is empty, means all proxies
+# start = ssh,dns
+
+# heartbeat configure, it's not recommended to modify the default value
+# The default value of heartbeat_interval is 10 and heartbeat_timeout is 90. Set negative value
+# to disable it.
+# heartbeat_interval = 30
+# heartbeat_timeout = 90
+
+# additional meta info for client
+meta_var1 = 123
+meta_var2 = 234
+
+# specify udp packet size, unit is byte. If not set, the default value is 1500.
+# This parameter should be same between client and server.
+# It affects the udp and sudp proxy.
+udp_packet_size = 1500
+
+# include other config files for proxies.
+# includes = ./confd/*.ini
+
+# If the disable_custom_tls_first_byte is set to false, frpc will establish a connection with frps using the
+# first custom byte when tls is enabled.
+# Since v0.50.0, the default value has been changed to true, and the first custom byte is disabled by default.
+disable_custom_tls_first_byte = true
+
+# Enable golang pprof handlers in admin listener.
+# Admin port must be set first.
+pprof_enable = false
+
+# 'ssh' is the unique proxy name
+# if user in [common] section is not empty, it will be changed to {user}.{proxy} such as 'your_name.ssh'
+[ssh]
+# tcp | udp | http | https | stcp | xtcp, default is tcp
+type = tcp
+local_ip = 127.0.0.1
+local_port = 22
+# limit bandwidth for this proxy, unit is KB and MB
+bandwidth_limit = 1MB
+# where to limit bandwidth, can be 'client' or 'server', default is 'client'
+bandwidth_limit_mode = client
+# true or false, if true, messages between frps and frpc will be encrypted, default is false
+use_encryption = false
+# if true, message will be compressed
+use_compression = false
+# remote port listen by frps
+remote_port = 6001
+# frps will load balancing connections for proxies in same group
+group = test_group
+# group should have same group key
+group_key = 123456
+# enable health check for the backend service, it support 'tcp' and 'http' now
+# frpc will connect local service's port to detect it's healthy status
+health_check_type = tcp
+# health check connection timeout
+health_check_timeout_s = 3
+# if continuous failed in 3 times, the proxy will be removed from frps
+health_check_max_failed = 3
+# every 10 seconds will do a health check
+health_check_interval_s = 10
+# additional meta info for each proxy
+meta_var1 = 123
+meta_var2 = 234
+
+[ssh_random]
+type = tcp
+local_ip = 127.0.0.1
+local_port = 22
+# if remote_port is 0, frps will assign a random port for you
+remote_port = 0
+
+# if you want to expose multiple ports, add 'range:' prefix to the section name
+# frpc will generate multiple proxies such as 'tcp_port_6010', 'tcp_port_6011' and so on.
+[range:tcp_port]
+type = tcp
+local_ip = 127.0.0.1
+local_port = 6010-6020,6022,6024-6028
+remote_port = 6010-6020,6022,6024-6028
+use_encryption = false
+use_compression = false
+
+[dns]
+type = udp
+local_ip = 114.114.114.114
+local_port = 53
+remote_port = 6002
+use_encryption = false
+use_compression = false
+
+[range:udp_port]
+type = udp
+local_ip = 127.0.0.1
+local_port = 6010-6020
+remote_port = 6010-6020
+use_encryption = false
+use_compression = false
+
+# Resolve your domain names to [server_addr] so you can use http://web01.yourdomain.com to browse web01 and http://web02.yourdomain.com to browse web02
+[web01]
+type = http
+local_ip = 127.0.0.1
+local_port = 80
+use_encryption = false
+use_compression = true
+# http username and password are safety certification for http protocol
+# if not set, you can access this custom_domains without certification
+http_user = admin
+http_pwd = admin
+# if domain for frps is frps.com, then you can access [web01] proxy by URL http://web01.frps.com
+subdomain = web01
+custom_domains = web01.yourdomain.com
+# locations is only available for http type
+locations = /,/pic
+# route requests to this service if http basic auto user is abc
+# route_by_http_user = abc
+host_header_rewrite = example.com
+# params with prefix "header_" will be used to update http request headers
+header_X-From-Where = frp
+health_check_type = http
+# frpc will send a GET http request '/status' to local http service
+# http service is alive when it return 2xx http response code
+health_check_url = /status
+health_check_interval_s = 10
+health_check_max_failed = 3
+health_check_timeout_s = 3
+
+[web02]
+type = https
+local_ip = 127.0.0.1
+local_port = 8000
+use_encryption = false
+use_compression = false
+subdomain = web02
+custom_domains = web02.yourdomain.com
+# if not empty, frpc will use proxy protocol to transfer connection info to your local service
+# v1 or v2 or empty
+proxy_protocol_version = v2
+
+[plugin_unix_domain_socket]
+type = tcp
+remote_port = 6003
+# if plugin is defined, local_ip and local_port is useless
+# plugin will handle connections got from frps
+plugin = unix_domain_socket
+# params with prefix "plugin_" that plugin needed
+plugin_unix_path = /var/run/docker.sock
+
+[plugin_http_proxy]
+type = tcp
+remote_port = 6004
+plugin = http_proxy
+plugin_http_user = abc
+plugin_http_passwd = abc
+
+[plugin_socks5]
+type = tcp
+remote_port = 6005
+plugin = socks5
+plugin_user = abc
+plugin_passwd = abc
+
+[plugin_static_file]
+type = tcp
+remote_port = 6006
+plugin = static_file
+plugin_local_path = /var/www/blog
+plugin_strip_prefix = static
+plugin_http_user = abc
+plugin_http_passwd = abc
+
+[plugin_https2http]
+type = https
+custom_domains = test.yourdomain.com
+plugin = https2http
+plugin_local_addr = 127.0.0.1:80
+plugin_crt_path = ./server.crt
+plugin_key_path = ./server.key
+plugin_host_header_rewrite = 127.0.0.1
+plugin_header_X-From-Where = frp
+
+[plugin_https2https]
+type = https
+custom_domains = test.yourdomain.com
+plugin = https2https
+plugin_local_addr = 127.0.0.1:443
+plugin_crt_path = ./server.crt
+plugin_key_path = ./server.key
+plugin_host_header_rewrite = 127.0.0.1
+plugin_header_X-From-Where = frp
+
+[plugin_http2https]
+type = http
+custom_domains = test.yourdomain.com
+plugin = http2https
+plugin_local_addr = 127.0.0.1:443
+plugin_host_header_rewrite = 127.0.0.1
+plugin_header_X-From-Where = frp
+
+[secret_tcp]
+# If the type is secret tcp, remote_port is useless
+# Who want to connect local port should deploy another frpc with stcp proxy and role is visitor
+type = stcp
+# sk used for authentication for visitors
+sk = abcdefg
+local_ip = 127.0.0.1
+local_port = 22
+use_encryption = false
+use_compression = false
+# If not empty, only visitors from specified users can connect.
+# Otherwise, visitors from same user can connect. '*' means allow all users.
+allow_users = *
+
+# user of frpc should be same in both stcp server and stcp visitor
+[secret_tcp_visitor]
+# frpc role visitor -> frps -> frpc role server
+role = visitor
+type = stcp
+# the server name you want to visitor
+server_name = secret_tcp
+sk = abcdefg
+# connect this address to visitor stcp server
+bind_addr = 127.0.0.1
+# bind_port can be less than 0, it means don't bind to the port and only receive connections redirected from
+# other visitors. (This is not supported for SUDP now)
+bind_port = 9000
+use_encryption = false
+use_compression = false
+
+[p2p_tcp]
+type = xtcp
+sk = abcdefg
+local_ip = 127.0.0.1
+local_port = 22
+use_encryption = false
+use_compression = false
+# If not empty, only visitors from specified users can connect.
+# Otherwise, visitors from same user can connect. '*' means allow all users.
+allow_users = user1, user2
+
+[p2p_tcp_visitor]
+role = visitor
+type = xtcp
+# if the server user is not set, it defaults to the current user
+server_user = user1
+server_name = p2p_tcp
+sk = abcdefg
+bind_addr = 127.0.0.1
+# bind_port can be less than 0, it means don't bind to the port and only receive connections redirected from
+# other visitors. (This is not supported for SUDP now)
+bind_port = 9001
+use_encryption = false
+use_compression = false
+# when automatic tunnel persistence is required, set it to true
+keep_tunnel_open = false
+# effective when keep_tunnel_open is set to true, the number of attempts to punch through per hour
+max_retries_an_hour = 8
+min_retry_interval = 90
+# fallback_to = stcp_visitor
+# fallback_timeout_ms = 500
+
+[tcpmuxhttpconnect]
+type = tcpmux
+multiplexer = httpconnect
+local_ip = 127.0.0.1
+local_port = 10701
+custom_domains = tunnel1
+# route_by_http_user = user1

conf/frps.ini

@@ -1,15 +1,2 @@
-# common是必须的section
 [common]
-bind_addr = 0.0.0.0
 bind_port = 7000
-log_file = ./frps.log
-# debug, info, warn, error
-log_level = debug
-# file, console
-log_way = console 
-
-# test1即为name
-[test1]
-passwd = 123
-bind_addr = 0.0.0.0
-listen_port = 6000

conf/frps_full.ini

@@ -0,0 +1,168 @@
+# [common] is integral section
+[common]
+# A literal address or host name for IPv6 must be enclosed
+# in square brackets, as in "[::1]:80", "[ipv6-host]:http" or "[ipv6-host%zone]:80"
+# For single "bind_addr" field, no need square brackets, like "bind_addr = ::".
+bind_addr = 0.0.0.0
+bind_port = 7000
+
+# udp port used for kcp protocol, it can be same with 'bind_port'.
+# if not set, kcp is disabled in frps.
+kcp_bind_port = 7000
+
+# udp port used for quic protocol.
+# if not set, quic is disabled in frps.
+# quic_bind_port = 7002
+# quic protocol options
+# quic_keepalive_period = 10
+# quic_max_idle_timeout = 30
+# quic_max_incoming_streams = 100000
+
+# specify which address proxy will listen for, default value is same with bind_addr
+# proxy_bind_addr = 127.0.0.1
+
+# if you want to support virtual host, you must set the http port for listening (optional)
+# Note: http port and https port can be same with bind_port
+vhost_http_port = 80
+vhost_https_port = 443
+
+# response header timeout(seconds) for vhost http server, default is 60s
+# vhost_http_timeout = 60
+
+# tcpmux_httpconnect_port specifies the port that the server listens for TCP
+# HTTP CONNECT requests. If the value is 0, the server will not multiplex TCP
+# requests on one single port. If it's not - it will listen on this value for
+# HTTP CONNECT requests. By default, this value is 0.
+# tcpmux_httpconnect_port = 1337
+
+# If tcpmux_passthrough is true, frps won't do any update on traffic.
+# tcpmux_passthrough = false
+
+# set dashboard_addr and dashboard_port to view dashboard of frps
+# dashboard_addr's default value is same with bind_addr
+# dashboard is available only if dashboard_port is set
+dashboard_addr = 0.0.0.0
+dashboard_port = 7500
+
+# dashboard user and passwd for basic auth protect
+dashboard_user = admin
+dashboard_pwd = admin
+
+# dashboard TLS mode
+dashboard_tls_mode = false
+# dashboard_tls_cert_file = server.crt
+# dashboard_tls_key_file = server.key
+
+# enable_prometheus will export prometheus metrics on {dashboard_addr}:{dashboard_port} in /metrics api.
+enable_prometheus = true
+
+# dashboard assets directory(only for debug mode)
+# assets_dir = ./static
+
+# console or real logFile path like ./frps.log
+log_file = ./frps.log
+
+# trace, debug, info, warn, error
+log_level = info
+
+log_max_days = 3
+
+# disable log colors when log_file is console, default is false
+disable_log_color = false
+
+# DetailedErrorsToClient defines whether to send the specific error (with debug info) to frpc. By default, this value is true.
+detailed_errors_to_client = true
+
+# authentication_method specifies what authentication method to use authenticate frpc with frps.
+# If "token" is specified - token will be read into login message.
+# If "oidc" is specified - OIDC (Open ID Connect) token will be issued using OIDC settings. By default, this value is "token".
+authentication_method = token
+
+# authenticate_heartbeats specifies whether to include authentication token in heartbeats sent to frps. By default, this value is false.
+authenticate_heartbeats = false
+
+# AuthenticateNewWorkConns specifies whether to include authentication token in new work connections sent to frps. By default, this value is false.
+authenticate_new_work_conns = false
+
+# auth token
+token = 12345678
+
+# oidc_issuer specifies the issuer to verify OIDC tokens with.
+# By default, this value is "".
+oidc_issuer =
+
+# oidc_audience specifies the audience OIDC tokens should contain when validated.
+# By default, this value is "".
+oidc_audience =
+
+# oidc_skip_expiry_check specifies whether to skip checking if the OIDC token is expired.
+# By default, this value is false.
+oidc_skip_expiry_check = false
+
+# oidc_skip_issuer_check specifies whether to skip checking if the OIDC token's issuer claim matches the issuer specified in OidcIssuer.
+# By default, this value is false.
+oidc_skip_issuer_check = false
+
+# heartbeat configure, it's not recommended to modify the default value
+# the default value of heartbeat_timeout is 90. Set negative value to disable it.
+# heartbeat_timeout = 90
+
+# user_conn_timeout configure, it's not recommended to modify the default value
+# the default value of user_conn_timeout is 10
+# user_conn_timeout = 10
+
+# only allow frpc to bind ports you list, if you set nothing, there won't be any limit
+allow_ports = 2000-3000,3001,3003,4000-50000
+
+# pool_count in each proxy will change to max_pool_count if they exceed the maximum value
+max_pool_count = 5
+
+# max ports can be used for each client, default value is 0 means no limit
+max_ports_per_client = 0
+
+# tls_only specifies whether to only accept TLS-encrypted connections. By default, the value is false.
+tls_only = false
+
+# tls_cert_file = server.crt
+# tls_key_file = server.key
+# tls_trusted_ca_file = ca.crt
+
+# if subdomain_host is not empty, you can set subdomain when type is http or https in frpc's configure file
+# when subdomain is test, the host used by routing is test.frps.com
+subdomain_host = frps.com
+
+# if tcp stream multiplexing is used, default is true
+# tcp_mux = true
+
+# specify keep alive interval for tcp mux.
+# only valid if tcp_mux is true.
+# tcp_mux_keepalive_interval = 60
+
+# tcp_keepalive specifies the interval between keep-alive probes for an active network connection between frpc and frps.
+# If negative, keep-alive probes are disabled.
+# tcp_keepalive = 7200
+
+# custom 404 page for HTTP requests
+# custom_404_page = /path/to/404.html
+
+# specify udp packet size, unit is byte. If not set, the default value is 1500.
+# This parameter should be same between client and server.
+# It affects the udp and sudp proxy.
+udp_packet_size = 1500
+
+# Enable golang pprof handlers in dashboard listener.
+# Dashboard port must be set first
+pprof_enable = false
+
+# Retention time for NAT hole punching strategy data.
+nat_hole_analysis_data_reserve_hours = 168
+
+[plugin.user-manager]
+addr = 127.0.0.1:9000
+path = /handler
+ops = Login
+
+[plugin.port-manager]
+addr = 127.0.0.1:9001
+path = /handler
+ops = NewProxy

doc/server_plugin.md

@@ -0,0 +1,264 @@
+### Server Plugin
+
+frp server plugin is aimed to extend frp's ability without modifying the Golang code.
+
+An external server should run in a different process receiving RPC calls from frps.
+Before frps is doing some operations, it will send RPC requests to notify the external RPC server and act according to its response.
+
+### RPC request
+
+RPC requests are based on JSON over HTTP.
+
+When a server plugin accepts an operation request, it can respond with three different responses:
+
+* Reject operation and return a reason.
+* Allow operation and keep original content.
+* Allow operation and return modified content.
+
+### Interface
+
+HTTP path can be configured for each manage plugin in frps. We'll assume for this example that it's `/handler`.
+
+A request to the RPC server will look like:
+
+```
+POST /handler?version=0.1.0&op=Login
+{
+    "version": "0.1.0",
+    "op": "Login",
+    "content": {
+        ... // Operation info
+    }
+}
+
+Request Header:
+X-Frp-Reqid: for tracing
+```
+
+The response can look like any of the following:
+
+* Non-200 HTTP response status code (this will automatically tell frps that the request should fail)
+
+* Reject operation:
+
+```
+{
+    "reject": true,
+    "reject_reason": "invalid user"
+}
+```
+
+* Allow operation and keep original content:
+
+```
+{
+    "reject": false,
+    "unchange": true
+}
+```
+
+* Allow operation and modify content
+
+```
+{
+    "unchange": "false",
+    "content": {
+        ... // Replaced content
+    }
+}
+```
+
+### Operation
+
+Currently `Login`, `NewProxy`, `CloseProxy`, `Ping`, `NewWorkConn` and `NewUserConn` operations are supported.
+
+#### Login
+
+Client login operation
+
+```
+{
+    "content": {
+        "version": <string>,
+        "hostname": <string>,
+        "os": <string>,
+        "arch": <string>,
+        "user": <string>,
+        "timestamp": <int64>,
+        "privilege_key": <string>,
+        "run_id": <string>,
+        "pool_count": <int>,
+        "metas": map<string>string,
+        "client_address": <string>
+    }
+}
+```
+
+#### NewProxy
+
+Create new proxy
+
+```
+{
+    "content": {
+        "user": {
+            "user": <string>,
+            "metas": map<string>string
+            "run_id": <string>
+        },
+        "proxy_name": <string>,
+        "proxy_type": <string>,
+        "use_encryption": <bool>,
+        "use_compression": <bool>,
+        "bandwidth_limit": <string>,
+        "bandwidth_limit_mode": <string>,
+        "group": <string>,
+        "group_key": <string>,
+
+        // tcp and udp only
+        "remote_port": <int>,
+
+        // http and https only
+        "custom_domains": []<string>,
+        "subdomain": <string>,
+        "locations": <string>,
+        "http_user": <string>,
+        "http_pwd": <string>,
+        "host_header_rewrite": <string>,
+        "headers": map<string>string,
+
+        // stcp only
+        "sk": <string>,
+
+        // tcpmux only
+        "multiplexer": <string>
+
+        "metas": map<string>string
+    }
+}
+```
+
+#### CloseProxy
+
+A previously created proxy is closed.
+
+Please note that one request will be sent for every proxy that is closed, do **NOT** use this
+if you have too many proxies bound to a single client, as this may exhaust the server's resources.
+
+```
+{
+    "content": {
+        "user": {
+            "user": <string>,
+            "metas": map<string>string
+            "run_id": <string>
+        },
+        "proxy_name": <string>
+    }
+}
+```
+
+#### Ping
+
+Heartbeat from frpc
+
+```
+{
+    "content": {
+        "user": {
+            "user": <string>,
+            "metas": map<string>string
+            "run_id": <string>
+        },
+        "timestamp": <int64>,
+        "privilege_key": <string>
+    }
+}
+```
+
+#### NewWorkConn
+
+New work connection received from frpc (RPC sent after `run_id` is matched with an existing frp connection)
+
+```
+{
+    "content": {
+        "user": {
+            "user": <string>,
+            "metas": map<string>string
+            "run_id": <string>
+        },
+        "run_id": <string>
+        "timestamp": <int64>,
+        "privilege_key": <string>
+    }
+}
+```
+
+#### NewUserConn
+
+New user connection received from proxy (support `tcp`, `stcp`, `https` and `tcpmux`) .
+
+```
+{
+    "content": {
+        "user": {
+            "user": <string>,
+            "metas": map<string>string
+            "run_id": <string>
+        },
+        "proxy_name": <string>,
+        "proxy_type": <string>,
+        "remote_addr": <string>
+    }
+}
+```
+
+### Server Plugin Configuration
+
+```ini
+# frps.ini
+[common]
+bind_port = 7000
+
+[plugin.user-manager]
+addr = 127.0.0.1:9000
+path = /handler
+ops = Login
+
+[plugin.port-manager]
+addr = 127.0.0.1:9001
+path = /handler
+ops = NewProxy
+```
+
+- addr: the address where the external RPC service listens. Defaults to http. For https, specify the schema: `addr = https://127.0.0.1:9001`.
+- path: http request url path for the POST request.
+- ops: operations plugin needs to handle (e.g. "Login", "NewProxy", ...).
+- tls_verify: When the schema is https, we verify by default. Set this value to false if you want to skip verification.
+
+### Metadata
+
+Metadata will be sent to the server plugin in each RPC request.
+
+There are 2 types of metadata entries - 1 under `[common]` and the other under each proxy configuration.
+Metadata entries under `[common]` will be sent in `Login` under the key `metas`, and in any other RPC request under `user.metas`.
+Metadata entries under each proxy configuration will be sent in `NewProxy` op only, under `metas`.
+
+Metadata entries start with `meta_`. This is an example of metadata entries in `[common]` and under the proxy named `[ssh]`:
+
+```
+# frpc.ini
+[common]
+server_addr = 127.0.0.1
+server_port = 7000
+user = fake
+meta_token = fake
+meta_version = 1.0.0
+
+[ssh]
+type = tcp
+local_port = 22
+remote_port = 6000
+meta_id = 123
+```

dockerfiles/Dockerfile-for-frpc

@@ -0,0 +1,12 @@
+FROM golang:1.20 AS building
+
+COPY . /building
+WORKDIR /building
+
+RUN make frpc
+
+FROM alpine:3
+
+COPY --from=building /building/bin/frpc /usr/bin/frpc
+
+ENTRYPOINT ["/usr/bin/frpc"]

dockerfiles/Dockerfile-for-frps

@@ -0,0 +1,12 @@
+FROM golang:1.20 AS building
+
+COPY . /building
+WORKDIR /building
+
+RUN make frps
+
+FROM alpine:3
+
+COPY --from=building /building/bin/frps /usr/bin/frps
+
+ENTRYPOINT ["/usr/bin/frps"]

go.mod

@@ -0,0 +1,80 @@
+module github.com/fatedier/frp
+
+go 1.20
+
+require (
+	github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5
+	github.com/coreos/go-oidc/v3 v3.4.0
+	github.com/fatedier/beego v0.0.0-20171024143340-6c6a4f5bd5eb
+	github.com/fatedier/golib v0.1.1-0.20230720124328-204db2e322f8
+	github.com/fatedier/kcp-go v2.0.4-0.20190803094908-fe8645b0a904+incompatible
+	github.com/go-playground/validator/v10 v10.11.0
+	github.com/google/uuid v1.3.0
+	github.com/gorilla/mux v1.8.0
+	github.com/gorilla/websocket v1.5.0
+	github.com/hashicorp/yamux v0.1.1
+	github.com/onsi/ginkgo/v2 v2.8.3
+	github.com/onsi/gomega v1.27.0
+	github.com/pion/stun v0.4.0
+	github.com/pires/go-proxyproto v0.6.2
+	github.com/prometheus/client_golang v1.13.0
+	github.com/quic-go/quic-go v0.34.0
+	github.com/rodaine/table v1.0.1
+	github.com/samber/lo v1.38.1
+	github.com/spf13/cobra v1.1.3
+	github.com/stretchr/testify v1.8.1
+	golang.org/x/net v0.7.0
+	golang.org/x/oauth2 v0.3.0
+	golang.org/x/sync v0.1.0
+	golang.org/x/time v0.0.0-20220210224613-90d013bbcef8
+	gopkg.in/ini.v1 v1.67.0
+	k8s.io/apimachinery v0.26.1
+	k8s.io/client-go v0.26.1
+)
+
+require (
+	github.com/Azure/go-ntlmssp v0.0.0-20200615164410-66371956d46c // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/go-logr/logr v1.2.3 // indirect
+	github.com/go-playground/locales v0.14.0 // indirect
+	github.com/go-playground/universal-translator v0.18.0 // indirect
+	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
+	github.com/golang/mock v1.6.0 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
+	github.com/google/go-cmp v0.5.9 // indirect
+	github.com/google/pprof v0.0.0-20210720184732-4bb14d4b1be1 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/klauspost/cpuid/v2 v2.0.6 // indirect
+	github.com/klauspost/reedsolomon v1.9.15 // indirect
+	github.com/leodido/go-urn v1.2.1 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/pion/transport/v2 v2.0.0 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.37.0 // indirect
+	github.com/prometheus/procfs v0.8.0 // indirect
+	github.com/quic-go/qtls-go1-19 v0.3.2 // indirect
+	github.com/quic-go/qtls-go1-20 v0.2.2 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/templexxx/cpufeat v0.0.0-20180724012125-cef66df7f161 // indirect
+	github.com/templexxx/xor v0.0.0-20191217153810-f85b25db303b // indirect
+	github.com/tjfoc/gmsm v1.4.1 // indirect
+	golang.org/x/crypto v0.4.0 // indirect
+	golang.org/x/exp v0.0.0-20221205204356-47842c84f3db // indirect
+	golang.org/x/mod v0.8.0 // indirect
+	golang.org/x/sys v0.5.0 // indirect
+	golang.org/x/text v0.7.0 // indirect
+	golang.org/x/tools v0.6.0 // indirect
+	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/protobuf v1.28.1 // indirect
+	gopkg.in/square/go-jose.v2 v2.6.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/utils v0.0.0-20221107191617-1a15be271d1d // indirect
+)
+
+// TODO(fatedier): Temporary use the modified version, update to the official version after merging into the official repository.
+replace github.com/hashicorp/yamux => github.com/fatedier/yamux v0.0.0-20230628132301-7aca4898904d

go.sum

@@ -0,0 +1,981 @@
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hack/download.sh

@@ -0,0 +1,63 @@
+#!/bin/sh
+
+OS="$(go env GOOS)"
+ARCH="$(go env GOARCH)"
+
+if [ "${TARGET_OS}" ]; then
+  OS="${TARGET_OS}"
+fi
+if [ "${TARGET_ARCH}" ]; then
+  ARCH="${TARGET_ARCH}"
+fi
+
+# Determine the latest version by version number ignoring alpha, beta, and rc versions.
+if [ "${FRP_VERSION}" = "" ] ; then
+  FRP_VERSION="$(curl -sL https://github.com/fatedier/frp/releases | \
+                  grep -o 'releases/tag/v[0-9]*.[0-9]*.[0-9]*"' | sort -V | \
+                  tail -1 | awk -F'/' '{ print $3}')"
+  FRP_VERSION="${FRP_VERSION%?}"
+  FRP_VERSION="${FRP_VERSION#?}"
+fi
+
+if [ "${FRP_VERSION}" = "" ] ; then
+  printf "Unable to get latest frp version. Set FRP_VERSION env var and re-run. For example: export FRP_VERSION=1.0.0"
+  exit 1;
+fi
+
+SUFFIX=".tar.gz"
+if [ "${OS}" = "windows" ] ; then
+  SUFFIX=".zip"
+fi
+NAME="frp_${FRP_VERSION}_${OS}_${ARCH}${SUFFIX}"
+DIR_NAME="frp_${FRP_VERSION}_${OS}_${ARCH}"
+URL="https://github.com/fatedier/frp/releases/download/v${FRP_VERSION}/${NAME}"
+
+download_and_extract() {
+  printf "Downloading %s from %s ...\n" "$NAME" "${URL}"
+  if ! curl -o /dev/null -sIf "${URL}"; then
+    printf "\n%s is not found, please specify a valid FRP_VERSION\n" "${URL}"
+    exit 1
+  fi
+  curl -fsLO "${URL}"
+  filename=$NAME
+
+  if [ "${OS}" = "windows" ]; then
+    unzip "${filename}"
+  else
+    tar -xzf "${filename}"
+  fi
+  rm "${filename}"
+
+  if [ "${TARGET_DIRNAME}" ]; then
+    mv "${DIR_NAME}" "${TARGET_DIRNAME}"
+    DIR_NAME="${TARGET_DIRNAME}"
+  fi
+}
+
+download_and_extract
+
+printf ""
+printf "\nfrp %s Download Complete!\n" "$FRP_VERSION"
+printf "\n"
+printf "frp has been successfully downloaded into the %s folder on your system.\n" "$DIR_NAME"
+printf "\n"