utils/conn: support ipv6, fix #62

Makefile

@@ -1,15 +1,13 @@
 export PATH := $(GOPATH)/bin:$(PATH)
 export GO15VENDOREXPERIMENT := 1
 
-all: fmt dep build
+all: fmt build
 
 build: frps frpc build_test
 
 build_test: echo_server http_server
 
-dep: statik
-
-statik:
+assets:
 	go get -d github.com/rakyll/statik
 	@go install github.com/rakyll/statik
 	@rm -rf ./src/assets/statik

conf/frpc.ini

@@ -1,5 +1,7 @@
 # [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"
 server_addr = 0.0.0.0
 server_port = 7000
 # console or real logFile path like ./frpc.log

conf/frps.ini

@@ -1,5 +1,7 @@
 # [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"
 bind_addr = 0.0.0.0
 bind_port = 7000
 # if you want to support virtual host, you must set the http port for listening (optional)

src/utils/conn/conn.go

@@ -32,7 +32,10 @@ type Listener struct {
 }
 
 func Listen(bindAddr string, bindPort int64) (l *Listener, err error) {
-	tcpAddr, err := net.ResolveTCPAddr("tcp4", fmt.Sprintf("%s:%d", bindAddr, bindPort))
+	tcpAddr, err := net.ResolveTCPAddr("tcp", fmt.Sprintf("%s:%d", bindAddr, bindPort))
+	if err != nil {
+		return l, err
+	}
 	listener, err := net.ListenTCP("tcp", tcpAddr)
 	if err != nil {
 		return l, err
@@ -103,7 +106,7 @@ func NewConn(conn net.Conn) (c *Conn) {
 
 func ConnectServer(host string, port int64) (c *Conn, err error) {
 	c = &Conn{}
-	servertAddr, err := net.ResolveTCPAddr("tcp4", fmt.Sprintf("%s:%d", host, port))
+	servertAddr, err := net.ResolveTCPAddr("tcp", fmt.Sprintf("%s:%d", host, port))
 	if err != nil {
 		return
 	}