我在网页端 JS连接 WebSocket 总是失败

13714425256 更新于2016-05-27

服务器

<?php
use Workerman\Worker;
require_once './Workerman/Autoloader.php';
// 初始化一个worker容器，监听1234端口
$worker = new Worker('websocket://127.0.0.1:1234');

/*
 * 注意这里进程数必须设置为1，否则会报端口占用错误
 * (php 7可以设置进程数大于1，前提是$inner_text_worker->reusePort=true)
 */
$worker->count = 1;
// worker进程启动后创建一个text Worker以便打开一个内部通讯端口
$worker->onWorkerStart = function($worker)
{
    // 开启一个内部端口，方便内部系统推送数据，Text协议格式 文本+换行符
    $inner_text_worker = new Worker('text://127.0.0.1:5678');
    $inner_text_worker->onMessage = function($connection, $buffer)
    {
        global $worker;
        // $data数组格式，里面有uid，表示向那个uid的页面推送数据
        $data = json_decode($buffer, true);
        $uid = $data;
        // 通过workerman，向uid的页面推送数据
        $ret = sendMessageByUid($uid, $buffer);
        // 返回推送结果
        $connection->send($ret ? 'ok' : 'fail');
    };
    //  执行监听 
    $inner_text_worker->listen();
};
// 新增加一个属性，用来保存uid到connection的映射
$worker->uidConnections = array();
// 当有客户端发来消息时执行的回调函数
$worker->onMessage = function($connection, $data)use($worker)
{
    // 判断当前客户端是否已经验证,既是否设置了uid
    if(!isset($connection->uid))
    {
       // 没验证的话把第一个包当做uid（这里为了方便演示，没做真正的验证）
       $connection->uid = $data;
       /* 保存uid到connection的映射，这样可以方便的通过uid查找connection，
        * 实现针对特定uid推送数据
        */
       $worker->uidConnections = $connection;
       return;
    }
};

// 当有客户端连接断开时
$worker->onClose = function($connection)use($worker)
{
    global $worker;
    if(isset($connection->uid))
    {
        // 连接断开时删除映射
        unset($worker->uidConnections);
    }
};

// 向所有验证的用户推送数据
function broadcast($message)
{
   global $worker;
   foreach($worker->uidConnections as $connection)
   {
        $connection->send($message);
   }
}

// 针对uid推送数据
function sendMessageByUid($uid, $message)
{
    global $worker;
    if(isset($worker->uidConnections))
    {
        $connection = $worker->uidConnections;
        $connection->send($message);
        return true;
    }
    return false;
}

// 运行所有的worker
Worker::runAll();

客户端

<!DOCTYPE html>
<!--
To change this license header, choose License Headers in Project Properties.
To change this template file, choose Tools | Templates
and open the template in the editor.
-->
<html>
    <head>
        <title>TODO supply a title</title>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <script>
            //ws.send('hello world');
         function connect(){
             var ws =new WebSocket('ws://127.0.0.1:1234');
             ws.onpen=function(){
                 var uid ='uid1';alert(uid);
                 ws.send(uid);
             };
             ws.onmessage=function(e){
                 alert(e.data);
             }
         }   
        </script>
    </head>
    <body onload="connect();">
        <div>TODO write content</div>
    </body>
</html>

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