change worker after onMessage event

[xenion54]

@walkor Hi, is there a way to change worker process for connection? As i understand, now connection linked to one of workers and its done on connection established. I need change worker on the fly, is it technicaly possible? i will realy apprechiate you for answer.

[walkor]

In Linux systems, it is possible to pass descriptors between processes. In Workerman, the code looks something like this.

<?php
require_once __DIR__ . '/vendor/autoload.php';
use Workerman\Connection\TcpConnection;
use Workerman\Events\EventInterface;
use Workerman\Worker;

$worker = new Worker('websocket://0.0.0.0:1234');
$count = 4;
$worker->count = $count;
$fd_array = [];
for ($i = 0; $i < $count; $i++) {
    socket_create_pair(AF_UNIX, SOCK_DGRAM, 0, $fds);
    $fd_array[] = $fds;
}

$worker->onWorkerStart = function ($worker) use ($fd_array) {
    $id = $worker->id;
    $stream = socket_export_stream($fd_array[$id][0]);
    Worker::$globalEvent->add($stream, EventInterface::EV_READ, function () use ($stream, $worker) {
        echo "Receive connection, current_pid=" . posix_getpid() . " current_worker->id=$worker->id\n";
        $socket = socket_import_stream($stream);
        $data = [
            'controllen' => socket_cmsg_space(SOL_SOCKET, SCM_RIGHTS, 1)
        ];
        socket_recvmsg($socket, $data, 0);
        $socket = socket_export_stream($data['control'][0]['data'][0]);
        createConnectionForWorker($worker, $socket);
    });
};

$worker->onConnect = function (TcpConnection $connection) use ($fd_array, $worker, $count){
    $id = $worker->id;
    $toId = ($id + 1) % $count;
    echo "Send connection From pid=" . posix_getpid() . " worker->id=$id To worker->id=$toId\n";
    socket_sendmsg($fd_array[$toId][1], [
        'control' => [[
            'level' => SOL_SOCKET,
            'type'  => SCM_RIGHTS,
            'data'  => [$connection->getSocket()]
        ]]
    ], 0);
    $connection->close();
};

$worker->onMessage = function (TcpConnection $connection, $request) use ($worker) {
    echo "onMessage current_pid=" . posix_getpid() . " current_worker->id=$worker->id\n";
    $connection->send('ok');
};

function createConnectionForWorker($worker, $socket)
{
    $connection = new TcpConnection($socket);
    $worker->connections[$connection->id] = $connection;
    $connection->worker = $worker;
    $connection->protocol = $worker->protocol;
    $connection->transport = $worker->transport;
    $connection->onMessage = $worker->onMessage;
    $connection->onClose = $worker->onClose;
    $connection->onError = $worker->onError;
}

Worker::runAll();

[xenion54]

Hi @walkor. Thank you so much. It looks hard, but its rly work. I m doing selfmade proxy, and when 2 connections with needed identifiers are connected, i need to put to one process, cause i think that sending message between each other will be faster in same process, than use Channel Class evry time when message received. If i wrong way, pls say what you think about it. Anyway, again, thank so much for answer and for nice library.

In Linux systems, it is possible to pass descriptors between processes. In Workerman, the code looks something like this.

<?php
require_once __DIR__ . '/vendor/autoload.php';
use Workerman\Connection\TcpConnection;
use Workerman\Events\EventInterface;
use Workerman\Worker;

$worker = new Worker('websocket://0.0.0.0:1234');
$count = 4;
$worker->count = $count;
$fd_array = [];
for ($i = 0; $i < $count; $i++) {
    socket_create_pair(AF_UNIX, SOCK_DGRAM, 0, $fds);
    $fd_array[] = $fds;
}

$worker->onWorkerStart = function ($worker) use ($fd_array) {
    $id = $worker->id;
    $stream = socket_export_stream($fd_array[$id][0]);
    Worker::$globalEvent->add($stream, EventInterface::EV_READ, function () use ($stream, $worker) {
        echo "Receive connection, current_pid=" . posix_getpid() . " current_worker->id=$worker->id\n";
        $socket = socket_import_stream($stream);
        $data = [
            'controllen' => socket_cmsg_space(SOL_SOCKET, SCM_RIGHTS, 1)
        ];
        socket_recvmsg($socket, $data, 0);
        $socket = socket_export_stream($data['control'][0]['data'][0]);
        createConnectionForWorker($worker, $socket);
    });
};

$worker->onConnect = function (TcpConnection $connection) use ($fd_array, $worker, $count){
    $id = $worker->id;
    $toId = ($id + 1) % $count;
    echo "Send connection From pid=" . posix_getpid() . " worker->id=$id To worker->id=$toId\n";
    socket_sendmsg($fd_array[$toId][1], [
        'control' => [[
            'level' => SOL_SOCKET,
            'type'  => SCM_RIGHTS,
            'data'  => [$connection->getSocket()]
        ]]
    ], 0);
    $connection->close();
};

$worker->onMessage = function (TcpConnection $connection, $request) use ($worker) {
    echo "onMessage current_pid=" . posix_getpid() . " current_worker->id=$worker->id\n";
    $connection->send('ok');
};

function createConnectionForWorker($worker, $socket)
{
    $connection = new TcpConnection($socket);
    $worker->connections[$connection->id] = $connection;
    $connection->worker = $worker;
    $connection->protocol = $worker->protocol;
    $connection->transport = $worker->transport;
    $connection->onMessage = $worker->onMessage;
    $connection->onClose = $worker->onClose;
    $connection->onError = $worker->onError;
}

Worker::runAll();

Hi @walkor. Thank you so much. It looks hard, but its rly work. I m doing selfmade proxy, and when 2 connections with needed identifiers are connected, i need to put to one process, cause i think that sending message between each other will be faster in same process, than use Channel Class evry time when message received. If i wrong way, pls say what you think about it. Anyway, again, thank so much for answer and for nice library.

[walkor]

i think that sending message between each other will be faster in same process, than use Channel Class evry time when message received

Yes