swoole websocket服务

websocket协议是基于TCP的一种新网络协议，它实现了浏览器与服务器全双工（full-duplex）通信--可以让服务器主动发送信息给客户端

为什么用websocket

HTTP的通信只能由客户端发起，比如ajax轮寻啊

websocket特点：

1.建立在TCP协议之上

2.性能开销小通信高效

3.客户端可以与任意服务器通信

4.协议标识符WS WSS跟HTTPS一个概念

5.持久化网络通信协议服务器主动向客户端推送消息

<?php

$server = new swoole_websocket_server("0.0.0.0", 9504);

//设置WebSocket子协议。设置后握手响应的Http头会增加Sec-WebSocket-Protocol: {$websocket_subprotocol}
//$server->set([
//    'websocket_subprotocol' => 'chat',
//]);

//----------------
//监听websocke连接打开事件
//$server->on('open', function (swoole_websocket_server $server, $request) {
//    echo "server: handshake success with fd{$request->fd}\n";
//});
//也可以用以下的写法
$server->on('open', 'onOpen');
function onOpen($server, $request){
    //哪个客户端
    print_r($request->fd);

}
//---------------



//监听消息事件
$server->on('message', function (swoole_websocket_server $server, $frame) {
    echo "receive from {$frame->fd}:{$frame->data},opcode:{$frame->opcode},fin:{$frame->finish}\n";
    //向websocket客户端连接推送数据
    //    $fd 客户端连接的ID，如果指定的$fd对应的TCP连接并非websocket客户端，将会发送失败
    //$data 要发送的数据内容
    //$opcode，指定发送数据内容的格式，默认为文本。发送二进制内容$opcode参数需要设置为WEBSOCKET_OPCODE_BINARY
    //发送成功返回true，发送失败返回false
    //    function swoole_websocket_server->push(int $fd, string $data, int $opcode = 1, bool $finish = true);
    $server->push($frame->fd, "this is server");
});
//也可以用以上单独方法去写

$server->on('close', function ($ser, $fd) {
    echo "client {$fd} closed\n";
});


//$server->on('request', function (swoole_http_request $request, swoole_http_response $response) {
//    global $server;//调用外部的server
//    // $server->connections 遍历所有websocket连接用户的fd，给所有用户推送
//    foreach ($server->connections as $fd) {
//        $server->push($fd, $request->get['message']);
//    }
//});
$server->start();

//class WebsocketTest {
//    public $server;
//    public function __construct() {
//        $this->server = new swoole_websocket_server("0.0.0.0", 9501);
//        $this->server->on('open', function (swoole_websocket_server $server, $request) {
//            echo "server: handshake success with fd{$request->fd}\n";
//        });
//        $this->server->on('message', function (swoole_websocket_server $server, $frame) {
//            echo "receive from {$frame->fd}:{$frame->data},opcode:{$frame->opcode},fin:{$frame->finish}\n";
//            $server->push($frame->fd, "this is server");
//        });
//        $this->server->on('close', function ($ser, $fd) {
//            echo "client {$fd} closed\n";
//        });
//        $this->server->on('request', function ($request, $response) {
//            // 接收http请求从get获取message参数的值，给用户推送
//            // $this->server->connections 遍历所有websocket连接用户的fd，给所有用户推送
//            foreach ($this->server->connections as $fd) {
//                $this->server->push($fd, $request->get['message']);
//            }
//        });
//        $this->server->start();
//    }
//}
//new WebsocketTest();

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>ws test</h1>
<script>
    var wsUrl = 'ws://test.swoole.com:9504';
    var webSocket = new WebSocket(wsUrl);
    //实例对象的onopen的属性
    webSocket.onopen = function (p1) {
        console.log('con-swoole-succ');
    }

    //实例化 onmessage
    webSocket.onmessage = function (p1) {
        console.log('ws-server-return-data:'+ p1.data);
    }

    //onclose
    webSocket.onclose = function (p1) {
        console.log('close');
    }

    webSocket.onerror = function (p1) {
        console.log('error-data:'+ p1.data);
    }
</script>
</body>
</html>

猜你喜欢