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[英]How check connect from client when not run server in socket.io (node.js)
[英]Node js - Socket.io client is not connect to remote server
我正在尝试使用以下代码连接到 socket.io-client:
var app = require('express')();
var http = require('http').Server(app);
var io = require('socket.io')(http);
var port = process.env.PORT || 3000;
app.get('/', function(req, res){
res.sendFile(__dirname + '/index.html');
});
io.on('connection', function(socket){
console.log("Birisi bağlandı!");
socket.on('chat message', function(msg){
io.emit('chat message', msg);
});
socket.on('new-post', function(data){
io.emit('posts', data);
});
socket.on('disconnect', function(){
console.log("Birisi çıktı!");
});
});
http.listen(port, function(){
console.log('listening on *:' + port);
});
客户端代码
<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.2.0/socket.io.js"></script>
<script src="https://code.jquery.com/jquery-1.11.1.js"></script>
<script>
var socket = io('http://139.59.104.188:3000');
</script>
但是客户端没有连接到服务器端。 控制台日志为空,我现在不知道为什么
您需要将socket.on('connect') function 添加到您的客户端:
<script>
var socket = io('http://139.59.104.188:3000');
socket.on('connect', () => {
console.log('connected to backend');
});
</script>
一旦您的客户端连接到后端,您的客户端(=浏览器)控制台将显示该消息。
您可能应该尝试推迟在客户端上加载脚本
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