Question

仅允许两个客户端连接到我的服务器。如何在socket.io的两个客户端上设置最大客户端数？这是我的server.js的样子：

var path = require('path');
var express = require('express'),
    app = express(),
    http = require('http'),
    socketIo = require('socket.io');

var server = http.createServer(app);
var io = socketIo.listen(server);
server.listen(9000);

app.get('/', function (req, res) {
    res.sendFile(path.join(__dirname + 'index.html'));


});
app.use(express.static(__dirname + '/'));

io.on('connection', function (socket) {


    socket.on('data', function (data) {


        socket.broadcast.emit('data', data)
    });

    socket.on('disconnect', function () {
console.log("disconnect")
    });

});

Answer 1

这是未经测试的，但是您应该能够检查连接的用户数并在连接/断开连接时进行更改。

这里是一个例子：

const connectedUsers = 0;
const maxUsers = 2;
io.on('connection', function (socket) {
    if(connectedUsers + 1 > maxUsers){ // check if the new connection will exceed the max connections allowed
       socket.disconnect(); // if so, disconnect the user and exit https://stackoverflow.com/a/5560187/11518920
       return;
    }
    connectedUsers++; // otherwise + 1 to the connectedUsers
    socket.on('data', function (data) {
       socket.broadcast.emit('data', data)
    });
   socket.on('disconnect', function () {
       connecteUsers--; // on a disconnected decrease the connectedUsers count
       console.log("disconnect")
    });
});

如何设置最大套接字io的客户？

1 个答案: