使用php的swoole框架，實現高性能長連接websocket

swoole的官網請見:http://www.swoole.com/ swoole-git:https://github.com/swoole/swoole-src
一.服務器端：
1. 編輯server.php文件內容如下：

<?php
$reqs=array(); //保持客戶端的長連接在這個數組裏
$serv = new swoole_websocket_server("192.168.2.115", 9502);
//如下可以設置多端口監聽
//$server = new swoole_websocket_server("0.0.0.0", 9501, SWOOLE_BASE);




//$server->addlistener('0.0.0.0', 9502, SWOOLE_SOCK_UDP);
//$server->set(['worker_num' => 4]);
$serv->on('Open', function($server, $req) {
 global $reqs;
 $reqs[]=$req->fd;
 echo "connection open: ".$req->fd."
";
 var_dump(count($reqs));//輸出長連接數
});
$serv->on('Message', function($server, $frame) {
 global $reqs;
 echo "message: ".$frame->data."
";
 foreach($reqs as $fd){
 $server->push($fd, $frame->data);
 }
});
$serv->on('Close', function($server, $fd) {
 echo "connection close: ".$fd."
";
});
$serv->start();

2. 啟動上面實現的websocket服務代碼

[songaimin@localhost Tests]$/usr/bin/php server.php

客戶端-同事打開兩個瀏覽器模擬多client：
3. 在瀏覽器console裏運行:

var wsl= 'ws://192.168.2.115:9502'
ws = new WebSocket(wsl);//新建立一個連接
//如下指定事件處理
ws.onopen = function(){ws.send('Test!'); };
ws.onmessage = function(evt){console.log(evt.data);/*ws.close();*/};
ws.onclose = function(evt){console.log('WebSocketClosed!');};
ws.onerror = function(evt){console.log('WebSocketError!');}; 

4. 在任意瀏覽器console裏手動執行：

ws.send(888);
//看每個瀏覽器的內容console輸出應該是一樣的就實驗在成功了
ws.close();//關閉連接

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