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编写 TCP 私有协议

Ethansmart 的个人博客 / 1817 / 2 / 创建于 5年前 / 更新于 5年前

使用php socket编写私有协议的tcp连接
使用pack 封包数据，unpack解包数据，不同数据类型和socket大小端转换
socket.php

<?php
class SocketFun
{

    public $socket ;

    public function __construct($socket)
    {
        $this->socket = $socket;
    }

    public function read_int8(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,1,MSG_WAITALL) ;

        if($res==1){
            $p_char = unpack("c",$buff);
            return $p_char ; //return unpack("c",$buff);
        }else {
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_uint8(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,1,MSG_WAITALL) ;

        if($res>0){
            return unpack("C",$buff);
        }else{
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_int16(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,2,MSG_WAITALL) ;

        if($res>0){
            return unpack("s",$buff);
        }else{
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_uint16(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,2,MSG_WAITALL) ;

        if($res>0){
            return unpack("S",$buff);
        }else{
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_uint16_l(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,2,MSG_WAITALL) ;

        if($res>0){
            return unpack("v",$buff);
        }else{
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_uint16_b(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,2,MSG_WAITALL) ;

        if($res>0){
            return unpack("n",$buff);
        }else{
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_int32(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,4,MSG_WAITALL) ;

        if($res>0){
            $p_char = unpack("l",$buff) ;
            return $p_char;
            //return unpack("l",$buff);
        }else{
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_uint32(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,4,MSG_WAITALL) ;

        if($res>0){
            return unpack("L",$buff);
        }else{
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_uint32_l(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,4,MSG_WAITALL) ;

        if($res>0){
            return unpack("V",$buff);
        }else{
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_uint32_b(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,4,MSG_WAITALL) ;

        if($res>0){
            return unpack("N",$buff);
        }else{
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_int64(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,8,MSG_WAITALL) ;

        if($res>0){
            return unpack("q",$buff);
        }else{
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_uint64(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,8,MSG_WAITALL) ;

        if($res>0){
            return unpack("Q",$buff);
        }else{
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_uint64_l(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,8,MSG_WAITALL) ;

        if($res>0){
            return unpack("P",$buff);
        }else{
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_uint64_b(){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,8,MSG_WAITALL) ;

        if($res>0){
            return unpack("J",$buff);
        }else{
            echo socket_strerror(socket_last_error());
        }
    }

    public function read_string($length,$type){
        $buff = "" ;
        $b = &$buff ;
        $res = socket_recv($this->socket,$b,$length,MSG_WAITALL) ;
        if($type){
            $buff_g = gzuncompress($buff);
            if($res>0){
                return unpack("A*",$buff_g);
                //return unpack("A*",$buff_g);
            }else{
                echo socket_strerror(socket_last_error());
            }
        }else{
            if($res>0){
                return unpack("A*",$buff);
                //return unpack("A*",$buff);
            }else{
                echo socket_strerror(socket_last_error());
            }
        }
    }

    /**
     * socket_write
     */

    public function write_int8($value){
        $buff_char = pack("c",$value);
        $res = socket_write($this->socket,$buff_char,1) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_uint8($value){
        $buff_char = pack("C",$value);
        $res = socket_write($this->socket,$buff_char,1) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_int16($value){

        $buff_char = pack("s",$value);
        $res = socket_write($this->socket,$buff_char,2) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_uint16($value){
        $buff_char = pack("S",$value);
        $res = socket_write($this->socket,$buff_char,2) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_uint16_l($value){

        $buff_char = pack("v",$value);
        $res = socket_write($this->socket,$buff_char,2) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_uint16_b($value){
        $buff_char = pack("n",$value);
        $res = socket_write($this->socket,$buff_char,2) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_int32($value){
        $buff_char = pack("l",$value);
        $res = socket_write($this->socket,$buff_char,4) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_uint32($value){
        $buff_char = pack("L",$value);
        $res = socket_write($this->socket,$buff_char,4) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_uint32_l($value){
        $buff_char = pack("V",$value);
        $res = socket_write($this->socket,$buff_char,4) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_uint32_b($value){
        $buff_char = pack("N",$value);
        $res = socket_write($this->socket,$buff_char,4) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_int64($value){
        $buff_char = pack("q",$value);
        $res = socket_write($this->socket,$buff_char,8) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_uint64($value){
        $buff_char = pack("Q",$value);
        $res = socket_write($this->socket,$buff_char,8) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_uint64_l($value){
        $buff_char = pack("P",$value);
        $res = socket_write($this->socket,$buff_char,8) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_uint64_b($value){
        $buff_char = pack("J",$value);
        $res = socket_write($this->socket,$buff_char,8) ;

        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    public function write_string($value,$length){
        $res = socket_write($this->socket,$value,strlen($value)) ;
        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
        $len = $length-strlen($value) ;
        if(strlen($value)<$length){
            $buff_zero[$length-strlen($value)]=array(0);
            $res = socket_write($this->socket,$buff_zero,$len) ;
            if(!($res>0)){
                echo socket_strerror(socket_last_error());
            }
        }
    }

    public function write_string_l($value,$length){
        $res = socket_write($this->socket,$value,$length) ;
        if(!($res>0)){
            echo socket_strerror(socket_last_error());
        }
    }

    function s_flush(){
        flush();
    }

    /**
     * 获取uuid
     */
    public function gen_uuid() {
        $uuid = array(
            'time_low'  => 0,
            'time_mid'  => 0,
            'time_hi'  => 0,
            'clock_seq_hi' => 0,
            'clock_seq_low' => 0,
            'node'   => array()
        );

        $uuid['time_low'] = mt_rand(0, 0xffff) + (mt_rand(0, 0xffff) << 16);
        $uuid['time_mid'] = mt_rand(0, 0xffff);
        $uuid['time_hi'] = (4 << 12) | (mt_rand(0, 0x1000));
        $uuid['clock_seq_hi'] = (1 << 7) | (mt_rand(0, 128));
        $uuid['clock_seq_low'] = mt_rand(0, 255);

        for ($i = 0; $i < 6; $i++) {
            $uuid['node'][$i] = mt_rand(0, 255);
        }

        $uuid = sprintf('%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x',
            $uuid['time_low'],
            $uuid['time_mid'],
            $uuid['time_hi'],
            $uuid['clock_seq_hi'],
            $uuid['clock_seq_low'],
            $uuid['node'][0],
            $uuid['node'][1],
            $uuid['node'][2],
            $uuid['node'][3],
            $uuid['node'][4],
            $uuid['node'][5]
        );

        return $uuid;
    }
}

采用多线程 发送心跳数据
thread.php

<?php
/**
 * Implements threading in PHP
 *
 * @package <none>
 * @version 1.0.0 - stable
 * @author Tudor Barbu <miau@motane.lu>
 * @copyright MIT
 */
class Thread {
    const FUNCTION_NOT_CALLABLE     = 10;
    const COULD_NOT_FORK            = 15;

    /**
     * possible errors
     *
     * @var array
     */
    private $errors = array(
        Thread::FUNCTION_NOT_CALLABLE   => 'You must specify a valid function name that can be called from the current scope.',
        Thread::COULD_NOT_FORK          => 'pcntl_fork() returned a status of -1. No new process was created',
    );

    /**
     * callback for the function that should
     * run as a separate thread
     *
     * @var callback
     */
    protected $runnable;

    /**
     * holds the current process id
     *
     * @var integer
     */
    private $pid;

    /**
     * hodls exit code after child die
     */
    private $exitCode = -1;

    /**
     * checks if threading is supported by the current
     * PHP configuration
     *
     * @return boolean
     */
    public static function available() {
        $required_functions = array(
            'pcntl_fork',
        );

        foreach( $required_functions as $function ) {
            if ( !function_exists( $function ) ) {
                return false;
            }
        }

        return true;
    }

    /**
     * class constructor - you can pass
     * the callback function as an argument
     *
     * @param callback $_runnable
     */
    public function __construct( $_runnable = null ) {
        if( $_runnable !== null ) {
            $this->setRunnable( $_runnable );
        }
    }

    /**
     * sets the callback
     *
     * @param callback $_runnable
     * @return callback
     */
    public function setRunnable( $_runnable ) {
        if( self::runnableOk( $_runnable ) ) {
            $this->runnable = $_runnable;
        }
        else {
            throw new Exception( $this->getError( Thread::FUNCTION_NOT_CALLABLE ), Thread::FUNCTION_NOT_CALLABLE );
        }
    }

    /**
     * gets the callback
     *
     * @return callback
     */
    public function getRunnable() {
        return $this->runnable;
    }

    /**
     * checks if the callback is ok (the function/method
     * actually exists and is runnable from the current
     * context)
     *
     * can be called statically
     *
     * @param callback $_runnable
     * @return boolean
     */
    public static function runnableOk( $_runnable ) {
        return ( function_exists( $_runnable ) && is_callable( $_runnable ) );
    }

    /**
     * returns the process id (pid) of the simulated thread
     *
     * @return int
     */
    public function getPid() {
        return $this->pid;
    }

    /**
     * checks if the child thread is alive
     *
     * @return boolean
     */
    public function isAlive() {
        $pid = pcntl_waitpid( $this->pid, $status, WNOHANG );

        if ($pid === 0) { // child is still alive
            return true;
        } else {
            if (pcntl_wifexited($status) && $this->exitCode == -1) { // normal exit
                $this->exitCode = pcntl_wexitstatus($status);
            }
            return false;
        }
    }

    /**
     * return exit code of child (-1 if child is still alive)
     *
     * @return int
     */
    public function getExitCode() {
        $this->isAlive();
        return $this->exitCode;
    }

    /**
     * starts the thread, all the parameters are
     * passed to the callback function
     *
     * @return void
     */
    public function start() {
        $pid = @ pcntl_fork();
        if( $pid == -1 ) {
            throw new Exception( $this->getError( Thread::COULD_NOT_FORK ), Thread::COULD_NOT_FORK );
        }
        if( $pid ) {
            // parent
            $this->pid = $pid;
        }
        else {
            // child
            pcntl_signal( SIGTERM, array( $this, 'signalHandler' ) );
            $arguments = func_get_args();
            if ( !empty( $arguments ) ) {
                call_user_func_array( $this->runnable, $arguments );
            }
            else {
                call_user_func( $this->runnable );
            }

            exit( 0 );
        }
    }

    /**
     * attempts to stop the thread
     * returns true on success and false otherwise
     *
     * @param integer $_signal - SIGKILL/SIGTERM
     * @param boolean $_wait
     */
    public function stop( $_signal = SIGKILL, $_wait = false ) {
        if( $this->isAlive() ) {
            posix_kill( $this->pid, $_signal );
            if( $_wait ) {
                pcntl_waitpid( $this->pid, $status = 0 );
            }
        }
    }

    /**
     * alias of stop();
     *
     * @return boolean
     */
    public function kill( $_signal = SIGKILL, $_wait = false ) {
        return $this->stop( $_signal, $_wait );
    }

    /**
     * gets the error's message based on
     * its id
     *
     * @param integer $_code
     * @return string
     */
    public function getError( $_code ) {
        if ( isset( $this->errors[$_code] ) ) {
            return $this->errors[$_code];
        }
        else {
            return 'No such error code ' . $_code . '! Quit inventing errors!!!';
        }
    }

    /**
     * signal handler
     *
     * @param integer $_signal
     */
    protected function signalHandler( $_signal ) {
        switch( $_signal ) {
            case SIGTERM:
                exit( 0 );
                break;
        }
    }
}

// EOF

php socket编写业务

require "thread.php";
require "socket.php";

$GLOBALS['socket']=socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
$GLOBALS['res'] = socket_connect($socket,'ip address',6868); // 创建连接

if(!$GLOBALS['res'] ){
    echo "connect failure" ;
    die();
}

$socket = new SocketFun($GLOBALS['socket']) ;
// 根据私有协议中的字段按照顺序和类型 write  如：写入一个8bytes的int 0：$socket->write_int8(0)

$socket->write_int8(0) ;
$socket->write_uint32_l($len) ;
$socket->write_int8(7) ;
$socket->write_string_l($uuid,32) ;
$socket->write_int8(1) ;
$socket->write_int8(0) ;
$socket->write_int8(0) ;
$socket->write_int8(0);
$socket->write_string($str,strlen($str)) ;

$GLOBALS['HEART_DATA']=10;
$msg=date("Y-m-d H:i:s");
echo("before").PHP_EOL ;
$socket = new SocketFun($socket) ;
//接收数据 demo
function doRecvData($res, $t) {
    do{
        echo "SendData".PHP_EOL ;
        $ss = new SocketFun($GLOBALS['socket']) ;

        $m_split = $ss->read_int8() ;
        $m_length = $ss->read_int32() ;
        $m_type = $ss->read_int8() ;
        $m_requestid = $ss->read_string(32,0) ;
        $m_version = $ss->read_int8() ;
        $m_cipher = $ss->read_int8() ;
        $m_replyCipher = $ss->read_int8() ;
        $m_compress = $ss->read_int8();
        $len3 = $m_length[1]-42 ;
        $m_json="";

        if($m_type[1]==8){
            if($m_compress[1]==1){ // 返回压缩数据
                $m_json = $ss->read_string($len3,1) ;
            }else{
                $m_json = $ss->read_string($len3,0) ;
            }

            $s_data = json_decode($m_json[1]) ;
            if(isset($s_data->data)){ // isset($s_data->data)
                $socket_data = $s_data->data ;
                if($socket_data!=null){

                    $GLOBALS['datas']=$socket_data ;
                    $num = $s_data->size;
                    if($num>400){

                    }else{
                        $data_value = json_encode($socket_data) ;
                        echo $data_value.PHP_EOL;
                        echo $num.PHP_EOL;
                        $result = request_by_post('http://10.10.83.231/subscribe/',json_encode($data_value));
                    }
                }
            }
        }

    }while(true);

    usleep($t);
    exit($res);
}
// 发送心跳 demo
function doSendHeartData($res, $t) {

    do{

        echo "SendHeartData" ;
        $ss = new SocketFun($GLOBALS['socket']);
        $uuid = $ss->gen_uuid() ;

        $ss->write_int8(0) ;
        $ss->write_uint32_l(42) ;
        $ss->write_int8(3) ;
        $ss->write_string_l($uuid,32) ;
        $ss->write_int8(1) ;
        $ss->write_int8(0) ;
        $ss->write_int8(0) ;
        $ss->write_int8(0);

        echo " END".PHP_EOL ;

        sleep($GLOBALS['HEART_DATA']);

    }while(true);

    usleep($t);
    exit($res);
}

$thread_recv = new Thread('doRecvData');
$thread_recv->start(1, 30);

$thread_send_heartData = new Thread('doSendHeartData');
$thread_send_heartData->start(2, 100);

while ($thread_recv->isAlive(1) || $thread_send_heartData->isAlive(2));

echo "receive thread exit " . $thread_recv->getExitCode() . "\n";
echo "send heart data thread exit " . $thread_send_heartData->getExitCode() . "\n";
TCP IP 私有协议 Socket
本作品采用《CC 协议》，转载必须注明作者和本文链接
Ethan Smart & AI Algorithm
Ethansmart
76 声望
thanks for your support !
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medz
Laravel 8.x 译者 915 声望 / 创始人 @ Odore Inc.

太过典型的程序思维，以为贴了代码（E.g）别人就懂了～其实教学文章不是这么简单的事情。

5年前 评论
panco
9 声望 / 服务端工程师 @ 秘密

还不如看workerman源码

5年前 评论

讨论应以学习和精进为目的。请勿发布不友善或者负能量的内容，与人为善，比聪明更重要！
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    我要举报该，理由是：

    取消