解决nodejs socket.io is not allowed by Access-Control-Allow-Origin 跨域问题

blog:http://www.cnblogs.com/solq/
demo:http://unitysgui.sinaapp.com/websocket/socketio.html

更改 :\node_modules\socket.io\lib\manager.js

if(origin){// https://developer.mozilla.org/En/HTTP_Access_Control
    headers['Access-Control-Allow-Origin']= origin;
    headers['Access-Control-Allow-Credentials']='true';//headers['Access-Control-Allow-Headers'] = 'Referer';}
    headers['Access-Control-Allow-Origin']="*";

在后面添加
headers['Access-Control-Allow-Origin'] = "*";

server.js

var http =require('http'),
io =require('socket.io'),
sys =require('sys');
server = http.createServer(function(req, res){
    res.writeHead(200,{'Content-Type':'text/html'});
    res.end("hello");});
server.listen(8082);var socket = io.listen(server,{origins:'*:*'});/*
socket.set("origins","*");
socket.set('transports', [
    'websocket'
    , 'flashsocket'
    , 'htmlfile'
    , 'xhr-polling'
    , 'jsonp-polling'
]);*/
socket.on('connection',function(client){ 
    sys.puts("New client is here!");
    client.send("hello world");
    client.on('message',function(msg){ sys.puts("client has sent:"+msg);});
    client.on('disconnect',function(){ sys.puts("Client has disconnected");});//发送自定义事件
    client.emit('news',{ hello:'news world'});//临听自定义事件
    client.on('my other event',function(data){//console.log(data);});});

client.js

<scriptsrc="http://localhost:8082/socket.io/socket.io.js"></script><script>
window.onload=function(){var url='127.0.0.1:8082';var socket = io.connect('localhost',{port:8082,rememberTransport:true,timeout:1500});
    socket.on('connect',function(){
        console.log('connected to server++++++++++++++++');
        socket.send('Hi Server...');});
    socket.on('message',function(r){ console.log('msg:+++++++++++'+r);});
    socket.on('disconnect',function(){ console.log('disconnected from server');});
    socket.on('news',function(data){
        console.log("++++++++++++++++++++++++++");
        console.log(data);//发送自定义事件
        socket.emit('my other event',{ my:'data'});});/*XMLHttpRequest cannot load http://localhost:8082/socket.io/1/?t=1336306289263. Origin null is not allowed by Access-Control-Allow-Origin.
    var ws = new WebSocket("ws://127.0.0.1:8082");
    ws.onopen = function(){console.log('connected to server');}
    ws.onmessage = function(m){console.log('onmessage');}
    ws.onclose = function(){}*/}</script>

https://github.com/LearnBoost/Socket.IO/wiki/Configuring-Socket.IO
注意：经过测试
io.connect('localhost')
localhost:8082 加上端会连不上

if(origin!='null'){// https://developer.mozilla.org/En/HTTP_Access_Control
    headers['Access-Control-Allow-Origin']= origin;
    headers['Access-Control-Allow-Credentials']='true';//headers['Access-Control-Allow-Headers'] = 'Referer';}
    console.log("console.log(origin)+++++++++++++++++++++++++++++++++++++++")
    console.log(origin)
    console.log(req.headers)

origin==null...难怪连不上。。。为什么为是null不太懂原理。。。就不管了，，手动改为全部可以访问就行了

解决IE不能接收服务端信息问题：
sever 要打开这几个协议吧。。。。
然后 clinet html 要放在服务里面，因为IE用的是 jsonp 方式 的话。。。。。。。。。。。只要是 js 请求都要放在服务器..
但是放在服务器里， node server 接收 ie 客户端 连接类型为 flashsocket 方式,,反正是不太了解。。。能工作就行了。。哈哈

socket.set('transports',['websocket','flashsocket','htmlfile','xhr-polling','jsonp-polling']);

最后，经过反复测试，，以上打开的协议是 遍历检测有就使用的。。。。
如果把 flashsocket 放在最后，那么 server 跟 ie 就用 jsonp 方式来连接...但是 ie 接收不了数据。。。。有人知道是什么原因，麻烦你告诉我。。好了谢谢...

希望能给个邀请码。。。。。