Connection closed pending confirmation response
I am writing a node program and I am facing a lot of difficulty.
server side code below:
var express=require("express");
var app=express();
var socketio=require("socket.io");
var server=require("http").Server(app);
var ws=socketio.listen(server);
app.use(express.static('public'));
app.listen(3000);
ws.on('connection',function(socket){
socket.on("message",function(msg){
console.log("got:"+msg);
socket.send('pong');
});
});
client side code is below:
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>websocket echo</title>
</head>
<body>
<h1>websocket echo</h1>
<h2>latency:<span id="latency"></span>ms</h2>
<script>
var lastMessage;
window.onload=function(){
//create socket
var ws=new WebSocket("ws://127.0.0.1:3000");
ws.onopen=function(){
//send first ping
ping();
};
// ηε¬Socketηε
³ι
ws.onclose = function(event) {
console.log('Client notified socket has closed',event);
};
ws.onmessage=function(ev){
console.log("got:"+ev.data);
document.getElementById("latency").innerHTML=new Date-lastMessage;
ping();
};
function ping(){
lastMessage= + new Date;
ws.send("ping");
}
}
</script>
</body>
</html>
there is a tip in chrome console: WebSocket connection with 'ws: //127.0.0.1: 3000 /' failed: connection closed before receiving response (index) handshake: 16 Client socket closed CloseEvent
+3
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