2023分享workerman自定义协议解决粘包拆包问题的方法

<?php
/**
 * This file is part of game.
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the MIT-LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @author    beiqiaosu
 * @link      http://www.zerofc.cn
 */
namespace Workerman\Protocols;

use Workerman\Connection\TcpConnection;

/**
 * Frame Protocol.
 */
class Game
{
    /**
     * Check the integrity of the package.
     *
     * @param string        $buffer
     * @param TcpConnection $connection
     * @return int
     */
    public static function input($buffer, TcpConnection $connection)
    {
        // 数据包前4个字节
        $bodyLen = intval(substr($buffer, 0 , 4));
        $totalLen = strlen($buffer);

        if ($totalLen < 4) {
            return 0;
        }

        if ($bodyLen <= 0) {
            return 0;
        }

        if ($bodyLen > strlen(substr($buffer, 4))) {
            return 0;
        }

        return $bodyLen + 4;
    }

    /**
     * Decode.
     *
     * @param string $buffer
     * @return string
     */
    public static function decode($buffer)
    {
        return substr($buffer, 4);
    }

    /**
     * Encode.
     *
     * @param string $buffer
     * @return string
     */
    public static function encode($buffer)
    {
        // 对数据包长度向左补零
        $bodyLen = strlen($buffer);
        $headerStr = str_pad($bodyLen, 4, 0, STR_PAD_LEFT);

        return $headerStr . $buffer;
    }
}

<?php

namespace Workerman\Protocols;

use Workerman\Connection\ConnectionInterface;

/**
 * Text Protocol.
 */
class Tank
{
    /**
     * Check the integrity of the package.
     *
     * @param string        $buffer
     * @param ConnectionInterface $connection
     * @return int
     */
    public static function input($buffer, ConnectionInterface $connection)
    {
        
        if (isset($connection->maxPackageSize) && \strlen($buffer) >= $connection->maxPackageSize) {
            $connection->close();
            return 0;
        }
        
        $pos = \strpos($buffer, "#");
        
        if ($pos === false) {
            return 0;
        }
        
        // 返回当前包长
        return $pos + 1;
    }

    /**
     * Encode.
     *
     * @param string $buffer
     * @return string
     */
    public static function encode($buffer)
    {
        return $buffer . "#";
    }

    /**
     * Decode.
     *
     * @param string $buffer
     * @return string
     */
    public static function decode($buffer)
    {
        return \rtrim($buffer, "#");
    }
}

<?php

use Workerman\Worker;

require_once __DIR__ . '/vendor/autoload.php';

// #### create socket and listen 1234 port ####
$worker = new Worker('tank://0.0.0.0:1234');

// 4 processes
//$worker->count = 4;

$worker->onWorkerStart = function ($connection) {
    echo "游戏协议服务启动……";
};

// Emitted when new connection come
$worker->onConnect = function ($connection) {
    echo "New Connection\n";
    $connection->send("address: " . $connection->getRemoteIp() . " " . $connection->getRemotePort());
};

// Emitted when data received
$worker->onMessage = function ($connection, $data) use ($worker, $stream) {

    echo "接收的数据：" . $data . "\n";

    // 简单实现接口分发
    $arr = explode(",", $data);

    if (!is_array($arr) || !count($arr)) {
        $connection->close("数据格式错误", true);
    }

    $func = strtoupper($arr[0]);
    $client = $connection->getRemoteAddress();

    switch($func) {
        case "LOGIN":
            $sendData = "Login1";
            break;
        case "POS":
            $positionX = $arr[1] ?? 0;
            $positionY = $arr[2] ?? 0;
            $positionZ = $arr[3] ?? 0;

            $sendData = "POS,$client,$positionX,$positionY,$positionZ";
            break;
    }

    $connection->send($sendData);
};

// Emitted when connection is closed
$worker->onClose = function ($connection) {
    echo "Connection closed\n";
};


// 接收缓冲区溢出回调
$worker->onBufferFull = function ($connection) {
    echo "清理缓冲区吧";
};

Worker::runAll();

?>