javascript - 什么时候可以断开套接字客户端

Question

请看下面的代码。这是nodeJS中的一个简单程序。 问题是为什么不打印 disconnect？ (如果你取消注释 setTimeout，问题就消失了) 真正的问题是什么？:为什么我不能同时启动 socketIO 客户端和服务器并在连接后立即关闭套接字？与 socketIO 连接的诀窍是什么？

"use strict";
var Promise = require("bluebird");
var socketio = require("socket.io");
var socketio_client = require("socket.io-client");
var http = require("http");

var port = 7457;
var hostandport = "http://localhost:" + port.toString();

var server = socketio.listen(port);

var client = socketio_client(hostandport);

server.sockets.on("connect", function (socket) {
    console.log("connect");
    socket.on("disconnect", function () {
        console.log("disconnect");
    });

    //setTimeout(function() {
        client.disconnect();
    //}, 1000);
});

Answer 1

您的服务器设置不正确，请改为这样做:

var server = require('http').createServer(handler);
var io = require('socket.io')(server);

io.on("connect", function (socket) {
    console.log("connect");
    socket.on("disconnect", function () {
        console.log("disconnect");
    });
//More importantly, you have done this part wrong, 
//the rest of your code may be functional, 
//but it does not adhere to what socket.io sets out in its own API
//(http://socket.io/docs/)
        socket.disconnect();
});