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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
我正在嘗試使用以下代碼連接到 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);
});
客戶端代碼
<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>
但是客戶端沒有連接到服務器端。 控制台日志為空,我現在不知道為什么
您需要將socket.on('connect') function 添加到您的客戶端:
<script>
var socket = io('http://139.59.104.188:3000');
socket.on('connect', () => {
console.log('connected to backend');
});
</script>
一旦您的客戶端連接到后端,您的客戶端(=瀏覽器)控制台將顯示該消息。
您可能應該嘗試推遲在客戶端上加載腳本
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