frpc: add support for connecting server through http proxies, see #67

src/models/client/client.go

@@ -37,7 +37,7 @@ type ProxyClient struct {
 }
 
 func (p *ProxyClient) GetLocalConn() (c *conn.Conn, err error) {
-	c, err = conn.ConnectServer(p.LocalIp, p.LocalPort)
+	c, err = conn.ConnectServer(fmt.Sprintf("%s:%d", p.LocalIp, p.LocalPort))
 	if err != nil {
 		log.Error("ProxyName [%s], connect to local port error, %v", p.Name, err)
 	}
@@ -51,7 +51,11 @@ func (p *ProxyClient) GetRemoteConn(addr string, port int64) (c *conn.Conn, err
 		}
 	}()
 
-	c, err = conn.ConnectServer(addr, port)
+	if HttpProxy == "" {
+		c, err = conn.ConnectServer(fmt.Sprintf("%s:%d", addr, port))
+	} else {
+		c, err = conn.ConnectServerByHttpProxy(HttpProxy, fmt.Sprintf("%s:%d", addr, port))
+	}
 	if err != nil {
 		log.Error("ProxyName [%s], connect to server [%s:%d] error, %v", p.Name, addr, port, err)
 		return

src/models/client/config.go

@@ -16,6 +16,7 @@ package client
 
 import (
 	"fmt"
+	"os"
 	"strconv"
 	"strings"
 
@@ -26,6 +27,7 @@ import (
 var (
 	ServerAddr        string = "0.0.0.0"
 	ServerPort        int64  = 7000
+	HttpProxy         string = ""
 	LogFile           string = "console"
 	LogWay            string = "console"
 	LogLevel          string = "info"
@@ -57,6 +59,14 @@ func LoadConf(confFile string) (err error) {
 		ServerPort, _ = strconv.ParseInt(tmpStr, 10, 64)
 	}
 
+	tmpStr, ok = conf.Get("common", "http_proxy")
+	if ok {
+		HttpProxy = tmpStr
+	} else {
+		// get http_proxy from env
+		HttpProxy = os.Getenv("http_proxy")
+	}
+
 	tmpStr, ok = conf.Get("common", "log_file")
 	if ok {
 		LogFile = tmpStr