all: modify import path, change version to v0.8.0

This commit is contained in:
fatedier
2016-08-11 16:10:44 +08:00
parent 9c0ca8675d
commit d4ecc2218d
32 changed files with 59 additions and 59 deletions

204
src/cmd/frpc/control.go Normal file
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// 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 (
"encoding/json"
"fmt"
"io"
"sync"
"time"
"github.com/fatedier/frp/src/models/client"
"github.com/fatedier/frp/src/models/consts"
"github.com/fatedier/frp/src/models/msg"
"github.com/fatedier/frp/src/utils/conn"
"github.com/fatedier/frp/src/utils/log"
"github.com/fatedier/frp/src/utils/pcrypto"
)
func ControlProcess(cli *client.ProxyClient, wait *sync.WaitGroup) {
defer wait.Done()
msgSendChan := make(chan interface{}, 1024)
c, err := loginToServer(cli)
if err != nil {
log.Error("ProxyName [%s], connect to server failed!", cli.Name)
return
}
defer c.Close()
go heartbeatSender(c, msgSendChan)
go msgSender(cli, c, msgSendChan)
msgReader(cli, c, msgSendChan)
close(msgSendChan)
}
// loop for reading messages from frpc after control connection is established
func msgReader(cli *client.ProxyClient, c *conn.Conn, msgSendChan chan interface{}) error {
// for heartbeat
var heartbeatTimeout bool = false
timer := time.AfterFunc(time.Duration(client.HeartBeatTimeout)*time.Second, func() {
heartbeatTimeout = true
c.Close()
log.Error("ProxyName [%s], heartbeatRes from frps timeout", cli.Name)
})
defer timer.Stop()
for {
buf, err := c.ReadLine()
if err == io.EOF || c == nil || c.IsClosed() {
c.Close()
log.Warn("ProxyName [%s], frps close this control conn!", cli.Name)
var delayTime time.Duration = 1
// loop until reconnect to frps
for {
log.Info("ProxyName [%s], try to reconnect to frps [%s:%d]...", cli.Name, client.ServerAddr, client.ServerPort)
c, err = loginToServer(cli)
if err == nil {
close(msgSendChan)
msgSendChan = make(chan interface{}, 1024)
go heartbeatSender(c, msgSendChan)
go msgSender(cli, c, msgSendChan)
break
}
if delayTime < 60 {
delayTime = delayTime * 2
}
time.Sleep(delayTime * time.Second)
}
continue
} else if err != nil {
log.Warn("ProxyName [%s], read from frps error: %v", cli.Name, err)
continue
}
ctlRes := &msg.ControlRes{}
if err := json.Unmarshal([]byte(buf), &ctlRes); err != nil {
log.Warn("ProxyName [%s], parse msg from frps error: %v : %s", cli.Name, err, buf)
continue
}
switch ctlRes.Type {
case consts.HeartbeatRes:
log.Debug("ProxyName [%s], receive heartbeat response", cli.Name)
timer.Reset(time.Duration(client.HeartBeatTimeout) * time.Second)
case consts.NoticeUserConn:
log.Debug("ProxyName [%s], new user connection", cli.Name)
// join local and remote connections, async
go cli.StartTunnel(client.ServerAddr, client.ServerPort)
default:
log.Warn("ProxyName [%s}, unsupport msgType [%d]", cli.Name, ctlRes.Type)
}
}
return nil
}
// loop for sending messages from channel to frps
func msgSender(cli *client.ProxyClient, c *conn.Conn, msgSendChan chan interface{}) {
for {
msg, ok := <-msgSendChan
if !ok {
break
}
buf, _ := json.Marshal(msg)
err := c.Write(string(buf) + "\n")
if err != nil {
log.Warn("ProxyName [%s], write to server error, proxy exit", cli.Name)
c.Close()
break
}
}
}
func loginToServer(cli *client.ProxyClient) (c *conn.Conn, err error) {
c, err = conn.ConnectServer(client.ServerAddr, client.ServerPort)
if err != nil {
log.Error("ProxyName [%s], connect to server [%s:%d] error, %v", cli.Name, client.ServerAddr, client.ServerPort, err)
return
}
nowTime := time.Now().Unix()
req := &msg.ControlReq{
Type: consts.NewCtlConn,
ProxyName: cli.Name,
UseEncryption: cli.UseEncryption,
UseGzip: cli.UseGzip,
PrivilegeMode: cli.PrivilegeMode,
ProxyType: cli.Type,
HostHeaderRewrite: cli.HostHeaderRewrite,
Timestamp: nowTime,
}
if cli.PrivilegeMode {
privilegeKey := pcrypto.GetAuthKey(cli.Name + client.PrivilegeToken + fmt.Sprintf("%d", nowTime))
req.RemotePort = cli.RemotePort
req.CustomDomains = cli.CustomDomains
req.PrivilegeKey = privilegeKey
} else {
authKey := pcrypto.GetAuthKey(cli.Name + cli.AuthToken + fmt.Sprintf("%d", nowTime))
req.AuthKey = authKey
}
buf, _ := json.Marshal(req)
err = c.Write(string(buf) + "\n")
if err != nil {
log.Error("ProxyName [%s], write to server error, %v", cli.Name, err)
return
}
res, err := c.ReadLine()
if err != nil {
log.Error("ProxyName [%s], read from server error, %v", cli.Name, err)
return
}
log.Debug("ProxyName [%s], read [%s]", cli.Name, res)
ctlRes := &msg.ControlRes{}
if err = json.Unmarshal([]byte(res), &ctlRes); err != nil {
log.Error("ProxyName [%s], format server response error, %v", cli.Name, err)
return
}
if ctlRes.Code != 0 {
log.Error("ProxyName [%s], start proxy error, %s", cli.Name, ctlRes.Msg)
return c, fmt.Errorf("%s", ctlRes.Msg)
}
log.Info("ProxyName [%s], connect to server [%s:%d] success!", cli.Name, client.ServerAddr, client.ServerPort)
return
}
func heartbeatSender(c *conn.Conn, msgSendChan chan interface{}) {
heartbeatReq := &msg.ControlReq{
Type: consts.HeartbeatReq,
}
log.Info("Start to send heartbeat to frps")
for {
time.Sleep(time.Duration(client.HeartBeatInterval) * time.Second)
if c != nil && !c.IsClosed() {
log.Debug("Send heartbeat to server")
msgSendChan <- heartbeatReq
} else {
break
}
}
log.Info("Heartbeat goroutine exit")
}

113
src/cmd/frpc/main.go Normal file
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// 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 (
"fmt"
"os"
"strconv"
"strings"
"sync"
docopt "github.com/docopt/docopt-go"
"github.com/fatedier/frp/src/models/client"
"github.com/fatedier/frp/src/utils/log"
"github.com/fatedier/frp/src/utils/version"
)
var (
configFile string = "./frpc.ini"
)
var usage string = `frpc is the client of frp
Usage:
frpc [-c config_file] [-L log_file] [--log-level=<log_level>] [--server-addr=<server_addr>]
frpc -h | --help
frpc -v | --version
Options:
-c config_file set config file
-L log_file set output log file, including console
--log-level=<log_level> set log level: debug, info, warn, error
--server-addr=<server_addr> addr which frps is listening for, example: 0.0.0.0:7000
-h --help show this screen
--version show version
`
func main() {
// the configures parsed from file will be replaced by those from command line if exist
args, err := docopt.Parse(usage, nil, true, version.Full(), false)
if args["-c"] != nil {
configFile = args["-c"].(string)
}
err = client.LoadConf(configFile)
if err != nil {
fmt.Println(err)
os.Exit(-1)
}
if args["-L"] != nil {
if args["-L"].(string) == "console" {
client.LogWay = "console"
} else {
client.LogWay = "file"
client.LogFile = args["-L"].(string)
}
}
if args["--log-level"] != nil {
client.LogLevel = args["--log-level"].(string)
}
if args["--server-addr"] != nil {
addr := strings.Split(args["--server-addr"].(string), ":")
if len(addr) != 2 {
fmt.Println("--server-addr format error: example 0.0.0.0:7000")
os.Exit(1)
}
serverPort, err := strconv.ParseInt(addr[1], 10, 64)
if err != nil {
fmt.Println("--server-addr format error, example 0.0.0.0:7000")
os.Exit(1)
}
client.ServerAddr = addr[0]
client.ServerPort = serverPort
}
if args["-v"] != nil {
if args["-v"].(bool) {
fmt.Println(version.Full())
os.Exit(0)
}
}
log.InitLog(client.LogWay, client.LogFile, client.LogLevel, client.LogMaxDays)
// wait until all control goroutine exit
var wait sync.WaitGroup
wait.Add(len(client.ProxyClients))
for _, client := range client.ProxyClients {
go ControlProcess(client, &wait)
}
log.Info("Start frpc success")
wait.Wait()
log.Warn("All proxy exit!")
}

326
src/cmd/frps/control.go Normal file
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// 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 (
"encoding/json"
"fmt"
"io"
"time"
"github.com/fatedier/frp/src/models/consts"
"github.com/fatedier/frp/src/models/msg"
"github.com/fatedier/frp/src/models/server"
"github.com/fatedier/frp/src/utils/conn"
"github.com/fatedier/frp/src/utils/log"
"github.com/fatedier/frp/src/utils/pcrypto"
)
func ProcessControlConn(l *conn.Listener) {
for {
c, err := l.Accept()
if err != nil {
return
}
log.Debug("Get new connection, %v", c.GetRemoteAddr())
go controlWorker(c)
}
}
// connection from every client and server
func controlWorker(c *conn.Conn) {
// if login message type is NewWorkConn, don't close this connection
var closeFlag bool = true
var s *server.ProxyServer
defer func() {
if closeFlag {
c.Close()
if s != nil {
s.Close()
}
}
}()
// get login message
buf, err := c.ReadLine()
if err != nil {
log.Warn("Read error, %v", err)
return
}
log.Debug("Get msg from frpc: %s", buf)
cliReq := &msg.ControlReq{}
if err := json.Unmarshal([]byte(buf), &cliReq); err != nil {
log.Warn("Parse msg from frpc error: %v : %s", err, buf)
return
}
// login when type is NewCtlConn or NewWorkConn
ret, info := doLogin(cliReq, c)
// if login type is NewWorkConn, nothing will be send to frpc
if cliReq.Type != consts.NewWorkConn {
cliRes := &msg.ControlRes{
Type: consts.NewCtlConnRes,
Code: ret,
Msg: info,
}
byteBuf, _ := json.Marshal(cliRes)
err = c.Write(string(byteBuf) + "\n")
if err != nil {
log.Warn("ProxyName [%s], write to client error, proxy exit", cliReq.ProxyName)
return
}
} else {
closeFlag = false
return
}
// if login failed, just return
if ret > 0 {
return
}
s, ok := server.ProxyServers[cliReq.ProxyName]
if !ok {
log.Warn("ProxyName [%s], is not exist now", cliReq.ProxyName)
return
}
// create a channel for sending messages
msgSendChan := make(chan interface{}, 1024)
go msgSender(s, c, msgSendChan)
go noticeUserConn(s, msgSendChan)
// loop for reading control messages from frpc and deal with different types
msgReader(s, c, msgSendChan)
close(msgSendChan)
log.Info("ProxyName [%s], I'm dead!", s.Name)
return
}
// when frps get one new user connection, send NoticeUserConn message to frpc and accept one new WorkConn later
func noticeUserConn(s *server.ProxyServer, msgSendChan chan interface{}) {
for {
closeFlag := s.WaitUserConn()
if closeFlag {
log.Debug("ProxyName [%s], goroutine for noticing user conn is closed", s.Name)
break
}
notice := &msg.ControlRes{
Type: consts.NoticeUserConn,
}
msgSendChan <- notice
log.Debug("ProxyName [%s], notice client to add work conn", s.Name)
}
}
// loop for reading messages from frpc after control connection is established
func msgReader(s *server.ProxyServer, c *conn.Conn, msgSendChan chan interface{}) error {
// for heartbeat
var heartbeatTimeout bool = false
timer := time.AfterFunc(time.Duration(server.HeartBeatTimeout)*time.Second, func() {
heartbeatTimeout = true
s.Close()
log.Error("ProxyName [%s], client heartbeat timeout", s.Name)
})
defer timer.Stop()
for {
buf, err := c.ReadLine()
if err != nil {
if err == io.EOF {
log.Warn("ProxyName [%s], client is dead!", s.Name)
return err
} else if c == nil || c.IsClosed() {
log.Warn("ProxyName [%s], client connection is closed", s.Name)
return err
}
log.Warn("ProxyName [%s], read error: %v", s.Name, err)
continue
}
cliReq := &msg.ControlReq{}
if err := json.Unmarshal([]byte(buf), &cliReq); err != nil {
log.Warn("ProxyName [%s], parse msg from frpc error: %v : %s", s.Name, err, buf)
continue
}
switch cliReq.Type {
case consts.HeartbeatReq:
log.Debug("ProxyName [%s], get heartbeat", s.Name)
timer.Reset(time.Duration(server.HeartBeatTimeout) * time.Second)
heartbeatRes := &msg.ControlRes{
Type: consts.HeartbeatRes,
}
msgSendChan <- heartbeatRes
default:
log.Warn("ProxyName [%s}, unsupport msgType [%d]", s.Name, cliReq.Type)
}
}
return nil
}
// loop for sending messages from channel to frpc
func msgSender(s *server.ProxyServer, c *conn.Conn, msgSendChan chan interface{}) {
for {
msg, ok := <-msgSendChan
if !ok {
break
}
buf, _ := json.Marshal(msg)
err := c.Write(string(buf) + "\n")
if err != nil {
log.Warn("ProxyName [%s], write to client error, proxy exit", s.Name)
s.Close()
break
}
}
}
// if success, ret equals 0, otherwise greater than 0
func doLogin(req *msg.ControlReq, c *conn.Conn) (ret int64, info string) {
ret = 1
// check if PrivilegeMode is enabled
if req.PrivilegeMode && !server.PrivilegeMode {
info = fmt.Sprintf("ProxyName [%s], PrivilegeMode is disabled in frps", req.ProxyName)
log.Warn("info")
return
}
var (
s *server.ProxyServer
ok bool
)
s, ok = server.ProxyServers[req.ProxyName]
if req.PrivilegeMode && req.Type == consts.NewCtlConn {
log.Debug("ProxyName [%s], doLogin and privilege mode is enabled", req.ProxyName)
} else {
if !ok {
info = fmt.Sprintf("ProxyName [%s] is not exist", req.ProxyName)
log.Warn(info)
return
}
}
// check authKey or privilegeKey
nowTime := time.Now().Unix()
if req.PrivilegeMode {
privilegeKey := pcrypto.GetAuthKey(req.ProxyName + server.PrivilegeToken + fmt.Sprintf("%d", req.Timestamp))
// privilegeKey avaiable in 15 minutes
if nowTime-req.Timestamp > 15*60 {
info = fmt.Sprintf("ProxyName [%s], privilege mode authorization timeout", req.ProxyName)
log.Warn(info)
return
} else if req.PrivilegeKey != privilegeKey {
info = fmt.Sprintf("ProxyName [%s], privilege mode authorization failed", req.ProxyName)
log.Warn(info)
return
}
} else {
authKey := pcrypto.GetAuthKey(req.ProxyName + s.AuthToken + fmt.Sprintf("%d", req.Timestamp))
// authKey avaiable in 15 minutes
if nowTime-req.Timestamp > 15*60 {
info = fmt.Sprintf("ProxyName [%s], authorization timeout", req.ProxyName)
log.Warn(info)
return
} else if req.AuthKey != authKey {
info = fmt.Sprintf("ProxyName [%s], authorization failed", req.ProxyName)
log.Warn(info)
return
}
}
// control conn
if req.Type == consts.NewCtlConn {
if req.PrivilegeMode {
s = server.NewProxyServerFromCtlMsg(req)
// we check listen_port if privilege_allow_ports are set
// and PrivilegeMode is enabled
if s.Type == "tcp" {
_, ok := server.PrivilegeAllowPorts[s.ListenPort]
if !ok {
info = fmt.Sprintf("ProxyName [%s], remote_port [%d] isn't allowed", req.ProxyName, s.ListenPort)
log.Warn(info)
return
}
}
err := server.CreateProxy(s)
if err != nil {
info = fmt.Sprintf("ProxyName [%s], %v", req.ProxyName, err)
log.Warn(info)
return
}
}
// check if vhost_port is set
if s.Type == "http" && server.VhostHttpMuxer == nil {
info = fmt.Sprintf("ProxyName [%s], type [http] not support when vhost_http_port is not set", req.ProxyName)
log.Warn(info)
return
}
if s.Type == "https" && server.VhostHttpsMuxer == nil {
info = fmt.Sprintf("ProxyName [%s], type [https] not support when vhost_https_port is not set", req.ProxyName)
log.Warn(info)
return
}
// set infomations from frpc
s.UseEncryption = req.UseEncryption
s.UseGzip = req.UseGzip
s.HostHeaderRewrite = req.HostHeaderRewrite
if req.PoolCount > server.MaxPoolCount {
s.PoolCount = server.MaxPoolCount
} else if req.PoolCount < 0 {
s.PoolCount = 0
} else {
s.PoolCount = req.PoolCount
}
if s.Status == consts.Working {
info = fmt.Sprintf("ProxyName [%s], already in use", req.ProxyName)
log.Warn(info)
return
}
// start proxy and listen for user connections, no block
err := s.Start(c)
if err != nil {
info = fmt.Sprintf("ProxyName [%s], start proxy error: %v", req.ProxyName, err)
log.Warn(info)
return
}
log.Info("ProxyName [%s], start proxy success", req.ProxyName)
if req.PrivilegeMode {
log.Info("ProxyName [%s], created by PrivilegeMode", req.ProxyName)
}
} else if req.Type == consts.NewWorkConn {
// work conn
if s.Status != consts.Working {
log.Warn("ProxyName [%s], is not working when it gets one new work connnection", req.ProxyName)
return
}
// the connection will close after join over
s.RegisterNewWorkConn(c)
} else {
info = fmt.Sprintf("Unsupport login message type [%d]", req.Type)
log.Warn("Unsupport login message type [%d]", req.Type)
return
}
ret = 0
return
}

179
src/cmd/frps/main.go Normal file
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// 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 (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"os"
"strconv"
"strings"
"time"
docopt "github.com/docopt/docopt-go"
"github.com/fatedier/frp/src/models/server"
"github.com/fatedier/frp/src/utils/conn"
"github.com/fatedier/frp/src/utils/log"
"github.com/fatedier/frp/src/utils/version"
"github.com/fatedier/frp/src/utils/vhost"
)
var usage string = `frps is the server of frp
Usage:
frps [-c config_file] [-L log_file] [--log-level=<log_level>] [--addr=<bind_addr>]
frps --reload
frps -h | --help
frps -v | --version
Options:
-c config_file set config file
-L log_file set output log file, including console
--log-level=<log_level> set log level: debug, info, warn, error
--addr=<bind_addr> listen addr for client, example: 0.0.0.0:7000
--reload reload ini file and configures in common section won't be changed
-h --help show this screen
-v --version show version
`
func main() {
// the configures parsed from file will be replaced by those from command line if exist
args, err := docopt.Parse(usage, nil, true, version.Full(), false)
if args["-c"] != nil {
server.ConfigFile = args["-c"].(string)
}
err = server.LoadConf(server.ConfigFile)
if err != nil {
fmt.Println(err)
os.Exit(-1)
}
// reload check
if args["--reload"] != nil {
if args["--reload"].(bool) {
resp, err := http.Get("http://" + server.BindAddr + ":" + fmt.Sprintf("%d", server.DashboardPort) + "/api/reload")
if err != nil {
fmt.Printf("frps reload error: %v\n", err)
os.Exit(1)
} else {
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
fmt.Printf("frps reload error: %v\n", err)
os.Exit(1)
}
res := &server.GeneralResponse{}
err = json.Unmarshal(body, &res)
if err != nil {
fmt.Printf("http response error: %v\n", err)
os.Exit(1)
} else if res.Code != 0 {
fmt.Printf("reload error: %s\n", res.Msg)
os.Exit(1)
}
fmt.Printf("reload success\n")
os.Exit(0)
}
}
}
if args["-L"] != nil {
if args["-L"].(string) == "console" {
server.LogWay = "console"
} else {
server.LogWay = "file"
server.LogFile = args["-L"].(string)
}
}
if args["--log-level"] != nil {
server.LogLevel = args["--log-level"].(string)
}
if args["--addr"] != nil {
addr := strings.Split(args["--addr"].(string), ":")
if len(addr) != 2 {
fmt.Println("--addr format error: example 0.0.0.0:7000")
os.Exit(1)
}
bindPort, err := strconv.ParseInt(addr[1], 10, 64)
if err != nil {
fmt.Println("--addr format error, example 0.0.0.0:7000")
os.Exit(1)
}
server.BindAddr = addr[0]
server.BindPort = bindPort
}
if args["-v"] != nil {
if args["-v"].(bool) {
fmt.Println(version.Full())
os.Exit(0)
}
}
log.InitLog(server.LogWay, server.LogFile, server.LogLevel, server.LogMaxDays)
l, err := conn.Listen(server.BindAddr, server.BindPort)
if err != nil {
log.Error("Create server listener error, %v", err)
os.Exit(1)
}
// create vhost if VhostHttpPort != 0
if server.VhostHttpPort != 0 {
vhostListener, err := conn.Listen(server.BindAddr, server.VhostHttpPort)
if err != nil {
log.Error("Create vhost http listener error, %v", err)
os.Exit(1)
}
server.VhostHttpMuxer, err = vhost.NewHttpMuxer(vhostListener, 30*time.Second)
if err != nil {
log.Error("Create vhost httpMuxer error, %v", err)
}
}
// create vhost if VhostHttpPort != 0
if server.VhostHttpsPort != 0 {
vhostListener, err := conn.Listen(server.BindAddr, server.VhostHttpsPort)
if err != nil {
log.Error("Create vhost https listener error, %v", err)
os.Exit(1)
}
server.VhostHttpsMuxer, err = vhost.NewHttpsMuxer(vhostListener, 30*time.Second)
if err != nil {
log.Error("Create vhost httpsMuxer error, %v", err)
}
}
// create dashboard web server if DashboardPort is set, so it won't be 0
if server.DashboardPort != 0 {
err := server.RunDashboardServer(server.BindAddr, server.DashboardPort)
if err != nil {
log.Error("Create dashboard web server error, %v", err)
os.Exit(1)
}
}
log.Info("Start frps success")
if server.PrivilegeMode == true {
log.Info("PrivilegeMode is enabled, you should pay more attention to security issues")
}
ProcessControlConn(l)
}