PHP swoole websocket协议上机指南

这一上机实验的开发环境用的是jetbrain公司的phpstorm

上级步骤如下：

创建websocket服务端

<?php
$server = new swoole_websocket_server('127.0.0.1',9502);
function onopen($serv,$request)
{
    echo "成功开启,已经为标示符".$request->fd."打开连接
";
}
$server->on('open','onopen');
$server->on('message',function(swoole_websocket_server $sw,$frame)
{
    echo "opcode操作符---{$frame->opcode};操作数据---{$frame->data};fd数据来自句柄
---{$frame->fd};finish结束符号{$frame->finish}.
";
    $sw->push($frame->fd,"推送的数据".$frame->data);//数据大小不过2M
});
$server->on('close',function($serv,$fd)
{
    echo "来自{$fd}的通信结束
";
});
$server->start();
?>

准备一个html页面，并在页面中附上websocket协议脚本

<!doctype html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <meta name="description" content="">
    <meta name="author" content="">
    <link rel="icon" href="../../../../favicon.ico">

    <title>websocket协议</title>

    <!-- Bootstrap core CSS -->
    <link href="../css/bootstrap.min.css" rel="stylesheet">

    <!-- Custom styles for this template -->
    <link href="../mycss/sticky-footer-navbar.css" rel="stylesheet">
</head>

<body>

<header>
    <!-- Fixed navbar -->
    <nav class="navbar navbar-expand-md navbar-dark fixed-top bg-dark">
        <a class="navbar-brand" href="#">Fixed navbar</a>
        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarCollapse" aria-controls="navbarCollapse" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
        </button>
        <div class="collapse navbar-collapse" id="navbarCollapse">
            <ul class="navbar-nav mr-auto">
                <li class="nav-item active">
                    <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
                </li>
                <li class="nav-item">
                    <a class="nav-link" href="#">Link</a>
                </li>
                <li class="nav-item">
                    <a class="nav-link disabled" href="#">Disabled</a>
                </li>
            </ul>
            <form class="form-inline mt-2 mt-md-0">
                <input class="form-control mr-sm-2" type="text" placeholder="Search" aria-label="Search">
                <button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
            </form>
        </div>
    </nav>
</header>

<!-- Begin page content -->
<main role="main" class="container">
    <h1 class="mt-5">Sticky footer with fixed navbar</h1>
    <p class="lead">Pin a fixed-height footer to the bottom of the viewport in desktop browsers with this custom HTML and CSS. A fixed navbar has been added with <code>padding-top: 60px;</code> on the <code>body &gt; .container</code>.</p>
    <p>Back to <a href="../sticky-footer">the default sticky footer</a> minus the navbar.</p>
</main>

<footer class="footer">
    <div class="container">
        <span class="text-muted">Place sticky footer content here.</span>
    </div>
</footer>

<!-- Bootstrap core JavaScript
================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script src="../js/jquery-3.4.1.min.js"></script>
<script>
    var myurl = "ws://swsocks.com:9502";
    var ws = new WebSocket(myurl);
    ws.onopen = function (evt) {
        ws.send("hello server");
        console.log("向服务器打了个招呼")
    };
    ws.onmessage = function (evt) {
        console.log("哟吼～服务器返回了数据"+evt.data);
    };
    ws.onclose = function (evt) {
        console.log("关闭了面向服务器的连接");
    }

</script>
</body>
</html>

#精简---websocket部分
<script>
    var myurl = "ws://swsocks.com:9502";
    var ws = new WebSocket(myurl);
    ws.onopen = function (evt) {
        ws.send("hello server");
        console.log("向服务器打了个招呼")
    };
    ws.onmessage = function (evt) {
        console.log("哟吼～服务器返回了数据"+evt.data);
    };
    ws.onclose = function (evt) {
        console.log("关闭了面向服务器的连接");
    }

</script>

在phpstorm中运行写好的前端页面----右键点击要运行的html标签页，运行Run index.html

运行结果

如果运行多个前端页面实例将会显示更多句柄

成功开启,已经为标示符1打开连接
opcode操作符---1;操作数据---hello server;fd数据来自句柄---1;finish结束符号1.
成功开启,已经为标示符2打开连接
opcode操作符---1;操作数据---hello server;fd数据来自句柄---2;finish结束符号1.
成功开启,已经为标示符3打开连接
opcode操作符---1;操作数据---hello server;fd数据来自句柄---3;finish结束符号1.
成功开启,已经为标示符4打开连接
opcode操作符---1;操作数据---hello server;fd数据来自句柄---4;finish结束符号1.

优化，把服务端封装成类

class myswserver
{
    const myip = '127.0.0.1';
    const myport = 9502;
    public $serv  = null;
    public function __construct()
    {
        $this->serv = new swoole_websocket_server('127.0.0.1',9502);
        $this->serv->on('open',[$this,'onopen']);#可能是swoole特有回调函数形式，可以对比php魔术方法call_user_func
        $this->serv->on('message',[$this,'onmessage']);
        $this->serv->on('close',[$this,'onclose']);
        $this->serv->start();
    }

    public function onopen($serv,$request)
    {
        echo "连接{$request->fd}已经建立
";
    }
    public function  onmessage($serv,$frame)
    {
        echo "已经为{$frame->fd}建立了连接,并发送了数据{$frame->data},其退出标示符为{$frame->finish},其opcode为{$frame->opcode}
";
        $serv->push($frame->fd,$frame->data);//向客户端推送数据
    }
    public function onclose($serv,$fd)
    {
        echo "关闭了{$fd}的连接
";
    }
}

$serv = new myswserver();

$serv->start();