support tls connection

utils/net/conn.go

@@ -15,6 +15,7 @@
 package net
 
 import (
+	"crypto/tls"
 	"errors"
 	"fmt"
 	"io"
@@ -207,3 +208,13 @@ func ConnectServerByProxy(proxyUrl string, protocol string, addr string) (c Conn
 		return nil, fmt.Errorf("unsupport protocol: %s", protocol)
 	}
 }
+
+func ConnectServerByProxyWithTLS(proxyUrl string, protocol string, addr string, tlsConfig *tls.Config) (c Conn, err error) {
+	c, err = ConnectServerByProxy(proxyUrl, protocol, addr)
+	if tlsConfig == nil {
+		return
+	}
+
+	c = WrapTLSClientConn(c, tlsConfig)
+	return
+}

utils/net/tls.go

@@ -0,0 +1,44 @@
+// Copyright 2019 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 net
+
+import (
+	"crypto/tls"
+	"net"
+
+	gnet "github.com/fatedier/golib/net"
+)
+
+var (
+	FRP_TLS_HEAD_BYTE = 0x17
+)
+
+func WrapTLSClientConn(c net.Conn, tlsConfig *tls.Config) (out Conn) {
+	c.Write([]byte{byte(FRP_TLS_HEAD_BYTE)})
+	out = WrapConn(tls.Client(c, tlsConfig))
+	return
+}
+
+func CheckAndEnableTLSServerConn(c net.Conn, tlsConfig *tls.Config) (out Conn) {
+	sc, r := gnet.NewSharedConnSize(c, 1)
+	buf := make([]byte, 1)
+	n, _ := r.Read(buf)
+	if n == 1 && int(buf[0]) == FRP_TLS_HEAD_BYTE {
+		out = WrapConn(tls.Server(c, tlsConfig))
+	} else {
+		out = WrapConn(sc)
+	}
+	return
+}

utils/version/version.go

@@ -19,7 +19,7 @@ import (
 	"strings"
 )
 
-var version string = "0.24.1"
+var version string = "0.25.0"
 
 func Full() string {
 	return version