diff --git a/lualib-src/lua-socket.c b/lualib-src/lua-socket.c
index f28d8665..e12a9c2f 100644
--- a/lualib-src/lua-socket.c
+++ b/lualib-src/lua-socket.c
@@ -534,12 +534,6 @@ lnodelay(lua_State *L) {
 	skynet_socket_nodelay(ctx,id);
 	return 0;
 }
-/*
-int skynet_socket_udp(struct skynet_context *ctx, const char * addr, int port);
-int skynet_socket_udp_connect(struct skynet_context *ctx, int id, const char * addr, int port);
-int skynet_socket_udp_send(struct skynet_context *ctx, int id, const char * address, const void *buffer, int sz);
-const char * skynet_socket_udp_address(struct skynet_context *ctx, struct skynet_socket_message *, int *addrsz);
-*/
 
 static int
 ludp(lua_State *L) {