[英]How do I fix a server side socket.io error?
I have the following lines of code in my index.js file:我的 index.js 文件中有以下代码行:
const express = require('express');
const app = express();
const server = require('http').Server(app);
const io = require('socket.io').listen(server);
When I start my server with: node --inspect server/index.js当我启动服务器时: node --inspect server/index.js
I get: TypeError: require(...).listen is not a function.我得到:TypeError: require(...).listen is not a function。
Any and all help appreciated!任何和所有的帮助表示赞赏!
You need http server.您需要 http 服务器。 The correct way to start a socket server is,启动套接字服务器的正确方法是,
const express = require("express");
const http = require("http");
const app = express();
const server = http.createServer(app)
const socketio = require('socket.io')
const io = socketio(server);
io.on("connection", socket => {
console.log("connected");
socket.on("welcome", (data) => {
console.log("welcome message", data);
})
});
server.listen(3000, () => console.log(`listen on port ${port}`))
The client,客户端,
const io = require("socket.io-client");
let socket = io.connect("http://localhost:3000");
socket.emit("welcome", "Hi");
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