diff --git a/Zframework/websocket.lua b/Zframework/websocket.lua
index 337ce287..79e0d378 100644
--- a/Zframework/websocket.lua
+++ b/Zframework/websocket.lua
@@ -72,7 +72,10 @@ do--Connect
 
 		--First line of HTTP
 		local l=SOCK:receive("*l")
-		local code=l:find(" "); code=l:sub(code+1,code+3)
+		local code
+		if l then
+			code=l:find(" "); code=l:sub(code+1,code+3)
+		end
 
 		if code=="101"then
 			readCHN:push("success")