diff --git a/lualib-src/lua-socket.c b/lualib-src/lua-socket.c
index ea97dce6..c9527372 100644
--- a/lualib-src/lua-socket.c
+++ b/lualib-src/lua-socket.c
@@ -488,14 +488,13 @@ llisten(lua_State *L) {
 	int port = luaL_checkinteger(L,2);
 	int backlog = luaL_optinteger(L,3,BACKLOG);
 	struct skynet_context * ctx = lua_touserdata(L, lua_upvalueindex(1));
-	int id = skynet_socket_listen(ctx, host, &port, backlog);
+	int id = skynet_socket_listen(ctx, host,port,backlog);
 	if (id < 0) {
 		return luaL_error(L, "Listen error");
 	}
 
 	lua_pushinteger(L,id);
-	lua_pushinteger(L,port);
-	return 2;
+	return 1;
 }
 
 static size_t
diff --git a/lualib/skynet/cluster.lua b/lualib/skynet/cluster.lua
index e3437b43..8118c2f6 100644
--- a/lualib/skynet/cluster.lua
+++ b/lualib/skynet/cluster.lua
@@ -77,9 +77,9 @@ end
 
 function cluster.open(port)
 	if type(port) == "string" then
-		return skynet.call(clusterd, "lua", "listen", port)
+		skynet.call(clusterd, "lua", "listen", port)
 	else
-		return skynet.call(clusterd, "lua", "listen", "0.0.0.0", port)
+		skynet.call(clusterd, "lua", "listen", "0.0.0.0", port)
 	end
 end
 
diff --git a/lualib/snax/gateserver.lua b/lualib/snax/gateserver.lua
index a896b587..3737f025 100644
--- a/lualib/snax/gateserver.lua
+++ b/lualib/snax/gateserver.lua
@@ -41,10 +41,10 @@ function gateserver.start(handler)
 		maxclient = conf.maxclient or 1024
 		nodelay = conf.nodelay
 		skynet.error(string.format("Listen on %s:%d", address, port))
-		socket, port = socketdriver.listen(address, port)
+		socket = socketdriver.listen(address, port)
 		socketdriver.start(socket)
 		if handler.open then
-			return handler.open(source, conf, port)
+			return handler.open(source, conf)
 		end
 	end
 
diff --git a/service-src/service_gate.c b/service-src/service_gate.c
index 6481937b..35fa3ea6 100644
--- a/service-src/service_gate.c
+++ b/service-src/service_gate.c
@@ -331,7 +331,7 @@ start_listen(struct gate *g, char * listen_addr) {
 		portstr[0] = '\0';
 		host = listen_addr;
 	}
-	g->listen_id = skynet_socket_listen(ctx, host, &port, BACKLOG);
+	g->listen_id = skynet_socket_listen(ctx, host, port, BACKLOG);
 	if (g->listen_id < 0) {
 		return 1;
 	}
diff --git a/service/clusterd.lua b/service/clusterd.lua
index 9b2758f0..d9f61cd4 100644
--- a/service/clusterd.lua
+++ b/service/clusterd.lua
@@ -148,9 +148,8 @@ function command.listen(source, addr, port)
 		local address = assert(node_address[addr], addr .. " is down")
 		addr, port = string.match(address, "([^:]+):(.*)$")
 	end
-
-	local param = { address = addr, port = port }
-	skynet.ret(skynet.pack(skynet.call(gate, "lua", "open", param)))
+	skynet.call(gate, "lua", "open", { address = addr, port = port })
+	skynet.ret(skynet.pack(nil))
 end
 
 function command.sender(source, node)
diff --git a/service/gate.lua b/service/gate.lua
index 5e530e40..d78cdafa 100644
--- a/service/gate.lua
+++ b/service/gate.lua
@@ -11,9 +11,8 @@ skynet.register_protocol {
 
 local handler = {}
 
-function handler.open(source, conf, port)
+function handler.open(source, conf)
 	watchdog = conf.watchdog or source
-	return port
 end
 
 function handler.message(fd, msg, sz)
diff --git a/skynet-src/skynet_socket.c b/skynet-src/skynet_socket.c
index 31acafc0..7ba7a683 100644
--- a/skynet-src/skynet_socket.c
+++ b/skynet-src/skynet_socket.c
@@ -127,7 +127,7 @@ skynet_socket_sendbuffer_lowpriority(struct skynet_context *ctx, struct socket_s
 }
 
 int 
-skynet_socket_listen(struct skynet_context *ctx, const char *host, int *port, int backlog) {
+skynet_socket_listen(struct skynet_context *ctx, const char *host, int port, int backlog) {
 	uint32_t source = skynet_context_handle(ctx);
 	return socket_server_listen(SOCKET_SERVER, source, host, port, backlog);
 }
diff --git a/skynet-src/skynet_socket.h b/skynet-src/skynet_socket.h
index 59aabb86..dd66f834 100644
--- a/skynet-src/skynet_socket.h
+++ b/skynet-src/skynet_socket.h
@@ -29,7 +29,7 @@ void skynet_socket_updatetime();
 
 int skynet_socket_sendbuffer(struct skynet_context *ctx, struct socket_sendbuffer *buffer);
 int skynet_socket_sendbuffer_lowpriority(struct skynet_context *ctx, struct socket_sendbuffer *buffer);
-int skynet_socket_listen(struct skynet_context *ctx, const char *host, int *port, int backlog);
+int skynet_socket_listen(struct skynet_context *ctx, const char *host, int port, int backlog);
 int skynet_socket_connect(struct skynet_context *ctx, const char *host, int port);
 int skynet_socket_bind(struct skynet_context *ctx, int fd);
 void skynet_socket_close(struct skynet_context *ctx, int id);
diff --git a/skynet-src/socket_server.c b/skynet-src/socket_server.c
index b9da6b97..f726593b 100644
--- a/skynet-src/socket_server.c
+++ b/skynet-src/socket_server.c
@@ -1936,7 +1936,7 @@ socket_server_shutdown(struct socket_server *ss, uintptr_t opaque, int id) {
 // return -1 means failed
 // or return AF_INET or AF_INET6
 static int
-do_bind(const char *host, int *port, int protocol, int *family) {
+do_bind(const char *host, int port, int protocol, int *family) {
 	int fd;
 	int status;
 	int reuse = 1;
@@ -1946,7 +1946,7 @@ do_bind(const char *host, int *port, int protocol, int *family) {
 	if (host == NULL || host[0] == 0) {
 		host = "0.0.0.0";	// INADDR_ANY
 	}
-	sprintf(portstr, "%d", *port);
+	sprintf(portstr, "%d", port);
 	memset( &ai_hints, 0, sizeof( ai_hints ) );
 	ai_hints.ai_family = AF_UNSPEC;
 	if (protocol == IPPROTO_TCP) {
@@ -1973,15 +1973,6 @@ do_bind(const char *host, int *port, int protocol, int *family) {
 	if (status != 0)
 		goto _failed;
 
-	if (*port == 0) {
-		union sockaddr_all sa;
-		socklen_t len = sizeof(sa);
-
-		if (getsockname(fd, (struct sockaddr *)&sa, &len) == 0) {
-			*port = ntohs((*family == AF_INET) ? sa.v4.sin_port : sa.v6.sin6_port);
-		}
-	}
-
 	freeaddrinfo( ai_list );
 	return fd;
 _failed:
@@ -1992,7 +1983,7 @@ _failed_fd:
 }
 
 static int
-do_listen(const char * host, int *port, int backlog) {
+do_listen(const char * host, int port, int backlog) {
 	int family = 0;
 	int listen_fd = do_bind(host, port, IPPROTO_TCP, &family);
 	if (listen_fd < 0) {
@@ -2005,8 +1996,8 @@ do_listen(const char * host, int *port, int backlog) {
 	return listen_fd;
 }
 
-int
-socket_server_listen(struct socket_server *ss, uintptr_t opaque, const char * addr, int *port, int backlog) {
+int 
+socket_server_listen(struct socket_server *ss, uintptr_t opaque, const char * addr, int port, int backlog) {
 	int fd = do_listen(addr, port, backlog);
 	if (fd < 0) {
 		return -1;
diff --git a/skynet-src/socket_server.h b/skynet-src/socket_server.h
index ae47c855..beb628ca 100644
--- a/skynet-src/socket_server.h
+++ b/skynet-src/socket_server.h
@@ -43,7 +43,7 @@ int socket_server_send(struct socket_server *, struct socket_sendbuffer *buffer)
 int socket_server_send_lowpriority(struct socket_server *, struct socket_sendbuffer *buffer);
 
 // ctrl command below returns id
-int socket_server_listen(struct socket_server *, uintptr_t opaque, const char * addr, int *port, int backlog);
+int socket_server_listen(struct socket_server *, uintptr_t opaque, const char * addr, int port, int backlog);
 int socket_server_connect(struct socket_server *, uintptr_t opaque, const char * addr, int port);
 int socket_server_bind(struct socket_server *, uintptr_t opaque, int fd);