PHP 之phpsocket.io简易聊天室

一、安装

composer require workerman/phpsocket.io

二、服务端和客户端连接

<?php

require_once './vendor/autoload.php';

use Workerman\Worker;
use PHPSocketIO\SocketIO;

$io = new SocketIO(3120);

// 当有客户端连接时
$io->on('connection', function($socket)use($io){
    // 定义chat message事件回调函数
    $socket->on('chat message', function($data)use($io){
        // 触发所有客户端定义的chat message from server事件
        var_dump($data);
        $io->emit('chat message from server', $data);
    });

});

Worker::runAll();

三、客户端

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>聊天室</title>
</head>
<body>
<div id="msg_box">

</div>


<div id="input-box">
    <input type="text" id="msg_input"><button onclick="send()">发送</button>
</div>

<script src='https://lib.baomitu.com/socket.io/1.7.4/socket.io.min.js'></script>
<script>
    // 连接服务端
    var socket = io('http://127.0.0.1:3120');

    function send()
    {
        var msg = document.querySelector('#msg_input').value;
        socket.emit('chat message', msg);
        document.querySelector('#msg_input').value = '';
    }

    // 服务端通过emit('chat message from server', $msg)触发客户端的chat message from server事件
    socket.on('chat message from server', function(msg){
        var oDiv = document.createElement('div');
        oDiv.innerHTML = msg;
        document.querySelector('#msg_box').appendChild(oDiv);
    });

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

四、广播给客户端

<?php
/**
 * Created by PhpStorm.
 * User: Administrator
 * Date: 2023/12/30 0030
 * Time: 13:21
 */

class SocketIO
{
    /**
     * 发送数据
     * @param null $host
     * @param null $port
     * @param string $action
     * @param null $data
     * @param string $address
     * @param string $transport
     * @return bool
     */
    public function send($host = null, $port = null, $action = "message", $data = null, $address = "/socket.io/?EIO=2", $transport = 'websocket')
    {
        $fd = fsockopen($host, $port, $errno, $errstr);
        if (!$fd) {
            return false;
        } //Can't connect tot server
        $key = $this->generateKey();
        $out = "GET $address&transport=$transport HTTP/1.1\r\n";
        $out .= "Host: http://$host:$port\r\n";
        $out .= "Upgrade: WebSocket\r\n";
        $out .= "Connection: Upgrade\r\n";
        $out .= "Sec-WebSocket-Key: $key\r\n";
        $out .= "Sec-WebSocket-Version: 13\r\n";
        $out .= "Origin: *\r\n\r\n";

        fwrite($fd, $out);
        // 101 switching protocols, see if echoes key
        $result = fread($fd, 10000);

        preg_match('#Sec-WebSocket-Accept:\s(.*)$#mU', $result, $matches);
        $keyAccept = trim($matches[1]);
        $expectedResonse = base64_encode(pack('H*', sha1($key . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')));
        $handshaked = ($keyAccept === $expectedResonse) ? true : false;
        if ($handshaked) {
            if ($action){
                fwrite($fd, $this->hybi10Encode('42["' . $action . '", "' . addslashes($data) . '"]'));
            }else{
                fwrite($fd, $this->hybi10Encode(addslashes($data)));
            }
            $content = '';
            while (!feof($fd)) {
                stream_set_timeout($fd, 1);
                $content .= fread($fd, 1024);
                $info = stream_get_meta_data($fd);
                if ($info['timed_out']) {
                    break;
                }
            }
            //fread($fd,1000000);
            fclose($fd);
            return true;
        } else {
            return false;
        }
    }

    private function generateKey($length = 16)
    {
        $c = 0;
        $tmp = '';
        while ($c++ * 16 < $length) {
            $tmp .= md5(mt_rand(), true);
        }
        return base64_encode(substr($tmp, 0, $length));
    }

    private function hybi10Encode($payload, $type = 'text', $masked = true)
    {
        $frameHead = array();
        $payloadLength = strlen($payload);
        switch ($type) {
            case 'text':
                $frameHead[0] = 129;
                break;
            case 'close':
                $frameHead[0] = 136;
                break;
            case 'ping':
                $frameHead[0] = 137;
                break;
            case 'pong':
                $frameHead[0] = 138;
                break;
        }
        if ($payloadLength > 65535) {
            $payloadLengthBin = str_split(sprintf('%064b', $payloadLength), 8);
            $frameHead[1] = ($masked === true) ? 255 : 127;
            for ($i = 0; $i < 8; $i++) {
                $frameHead[$i + 2] = bindec($payloadLengthBin[$i]);
            }
            if ($frameHead[2] > 127) {
                $this->close(1004);
                return false;
            }
        } elseif ($payloadLength > 125) {
            $payloadLengthBin = str_split(sprintf('%016b', $payloadLength), 8);
            $frameHead[1] = ($masked === true) ? 254 : 126;
            $frameHead[2] = bindec($payloadLengthBin[0]);
            $frameHead[3] = bindec($payloadLengthBin[1]);
        } else {
            $frameHead[1] = ($masked === true) ? $payloadLength + 128 : $payloadLength;
        }
        foreach (array_keys($frameHead) as $i) {
            $frameHead[$i] = chr($frameHead[$i]);
        }
        if ($masked === true) {
            $mask = array();
            for ($i = 0; $i < 4; $i++) {
                $mask[$i] = chr(rand(0, 255));
            }
            $frameHead = array_merge($frameHead, $mask);
        }
        $frame = implode('', $frameHead);
        for ($i = 0; $i < $payloadLength; $i++) {
            $frame .= ($masked === true) ? $payload[$i] ^ $mask[$i % 4] : $payload[$i];
        }
        return $frame;
    }
}

$socket = new SocketIO();
//发送消息到服务端，广播消息给所有客户端
$res = $socket->send('127.0.0.1', 3120, 'chat message', 'this is a test');
var_dump($res);

五、文档

https://www.workerman.net/phpsocket_io

posted @ 2023-12-30 13:48  样子2018  阅读(65)  评论(0)  编辑  收藏  举报