棘轮WebSocket (failed: WebSocket打开握手超时)

我已经使用Ratchet和JS客户端创建了一个websocket服务器。每当JS客户端连接到服务器时，连接空闲4分钟，然后给我一个握手超时。我试过禁用防火墙，改变端口，使用另一个web浏览器，甚至试过在线教程，到目前为止都没有效果。请帮助!

服务器代码:

<?php
use Ratchet'MessageComponentInterface;
use Ratchet'ConnectionInterface;
use Ratchet'Server'IoServer;
require __DIR__ . '/vendor/autoload.php';
class RatchetWebSocketServer implements MessageComponentInterface{

public function onClose(ConnectionInterface $conn) {
}
public function onError(ConnectionInterface $conn, 'Exception $e) {
    $conn->send($e->getMessage());
}
public function onMessage(ConnectionInterface $from, $msg) {
    $from->send("Server returned : ".$msg);
}
public function onOpen(ConnectionInterface $conn) {
}
}

$server = IoServer::factory(new RatchetWebSocketServer(), 8888);
$server->run();

function startServer(){
    try{
        var socket = new WebSocket("ws://127.0.0.1:80/CharlieTaxi/RatchetWebSocketServer.php");
        socket.onopen  = function(){
            console.log("Socket Status: "+socket.readyState);
            //send message to socket server
            socket.send("Hello from Alfred to Server");
            socket.close();
        };
        socket.onmessage = function(msg){
            console.log(msg.data);
//            socket.close();
        };
        socket.onclose = function(){
            console.log('connection is closed!');
        };
    }
    catch(e){
        console.log(e);
    }
}

这是请求头(Chrome浏览器):

Provisional headers are shown // this line is in bold with a yellow warning sign on the left
Accept-Encoding:gzip, deflate, sdch
Accept-Language:en-US,en;q=0.8-
Cache-Control:no-cache
Connection:Upgrade
Cookie:PHPSESSID=pgo5ma6o5mlh6k9mtfcad4k6d4
Host:127.0.0.1
Origin:http://127.0.0.1
Pragma:no-cache
Sec-WebSocket-Extensions:permessage-deflate; client_max_window_bits
Sec-WebSocket-Key:sVGKPRvSUghm1xdCgBQCsA==
Sec-WebSocket-Version:13
Upgrade:websocket
User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2486.0 Safari/537.36

这是给我超时后的控制台输出:

WebSocket connection to 'ws://127.0.0.1/CharlieTaxi/RatchetWebSocketServer.php' failed: WebSocket opening handshake timed out

这是作曲家。Json文件内容:

{
    "require": {
        "cboden/ratchet": "0.3.*"
    }
}