From 91c720ad6fe34a24e4dcb1c10aaa20c5a5c6be20 Mon Sep 17 00:00:00 2001
From: Cloud Wu <cloudwu@gmail.com>
Date: Thu, 19 Nov 2015 22:51:43 +0800
Subject: [PATCH] add assert for socket fd reuse

---
 lualib/socket.lua | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lualib/socket.lua b/lualib/socket.lua
index 1fd9d60b..bc9701ae 100644
--- a/lualib/socket.lua
+++ b/lualib/socket.lua
@@ -179,6 +179,7 @@ local function connect(id, func)
 		callback = func,
 		protocol = "TCP",
 	}
+	assert(not socket_pool[id], "socket is not closed")
 	socket_pool[id] = s
 	suspend(s)
 	local err = s.connecting
@@ -404,6 +405,7 @@ end
 local udp_socket = {}
 
 local function create_udp_object(id, cb)
+	assert(not socket_pool[id], "socket is not closed")
 	socket_pool[id] = {
 		id = id,
 		connected = true,