最近在学习“HTML5游戏开发实战”,其中第8章内容是使用WebSocket来构建多人游戏---《你画我猜》。然而在实现过程中,却一直出错:
客户端请求时,服务器端会报错并终止:
而浏览器端也会出错:
服务器代码:
var ws = require(__dirname + ‘\\lib\\ws\\server‘); var server = ws.createServer(); server.addListener("connection",function(conn){ //处理连接接入 console.log("A connection established with id",conn.id); var message = "Welcome " + conn.id + " joining the party.Total connection:" + server.manager.length; console.log(message); server.broadcast(message); }); server.listen(8000); console.log("WebSocket server is running."); console.log("Listening to port 8000.");
客户端代码:
var websocketGame = {} $(function(){ if(window[‘WebSocket‘]){ //创建连接 websocketGame.socket = new WebSocket("ws://localhost:8000"); //处理open事件 websocketGame.socket.onopen = function(e){ console.log(‘WebSocket connection established.‘); }; //处理message事件 websocketGame.socket.onmessage = function(e){ console.log(e.data); }; //处理close事件 websocketGame.socket.onclose = function(e){ console.log(‘WebSocket connection closed.‘); }; } });
各种调bug都无效。然后发现原因是chrome端的不兼容:
node-websocket-server,不支持websocket的draft-10,而chrome 14+浏览器,只支持draft-10的websocket,这样chrome基本都不能用了
因为按书上的教程使用的是node-websocket-server的lib。所以这里按照这篇教程改成了WebSocket-Node
这个工具需要按照两个环境MVC++和Python2.7 于是选择使用socket.io
新建两个文件app.js和index.html
app.js
var fs = require(‘fs‘) , http = require(‘http‘) , socketio = require(‘socket.io‘); var server = http.createServer(function(req, res) { res.writeHead(200, { ‘Content-type‘: ‘text/html‘}); res.end(fs.readFileSync(__dirname + ‘/index.html‘)); }).listen(8000, function() { console.log(‘Listening at: http://localhost:8000‘); }); socketio.listen(server).on(‘connection‘, function (socket) { socket.on(‘message‘, function (msg) { console.log(‘Message Received: ‘, msg); socket.broadcast.emit(‘message‘, msg); }); });
index.html:
<html> <head> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script> <script src="/socket.io/socket.io.js"></script> <script> $(function(){ var iosocket = io.connect(); iosocket.on(‘connect‘, function () { $(‘#incomingChatMessages‘).append($(‘<li>Connected</li>‘)); iosocket.on(‘message‘, function(message) { $(‘#incomingChatMessages‘).append($(‘<li></li>‘).text(message)); }); iosocket.on(‘disconnect‘, function() { $(‘#incomingChatMessages‘).append(‘<li>Disconnected</li>‘); }); }); $(‘#outgoingChatMessage‘).keypress(function(event) { if(event.which == 13) { event.preventDefault(); iosocket.send($(‘#outgoingChatMessage‘).val()); $(‘#incomingChatMessages‘).append($(‘<li></li>‘).text($(‘#outgoingChatMessage‘).val())); $(‘#outgoingChatMessage‘).val(‘‘); } }); }); </script> </head> <body> Incoming Chat: <ul id="incomingChatMessages"></ul> <br /> <input type="text" id="outgoingChatMessage"> </body> </html>
然后在当前目录cmd下: cnpm install socket.io,会在目录下生成一个文件夹node_modules。
然后用命令:node app.js启动服务器
这时候打开两个浏览器窗口,就可以相互聊天了:
参考:
时间: 2024-10-10 00:33:33