PHP code example of consik / yii2-websocket

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

consik / yii2-websocket example snippets

namespace app\daemons;

use consik\yii2websocket\events\WSClientMessageEvent;
use consik\yii2websocket\WebSocketServer;

class EchoServer extends WebSocketServer
{

    public function init()
    {
        parent::init();

        $this->on(self::EVENT_CLIENT_MESSAGE, function (WSClientMessageEvent $e) {
            $e->client->send( $e->message );
        });
    }

}

namespace app\commands;

use app\daemons\EchoServer;
use yii\console\Controller;

class ServerController extends Controller
{
    public function actionStart($port = null)
    {
        $server = new EchoServer();
        if ($port) {
            $server->port = $port;
        }
        $server->start();
    }
}

namespace app\commands;

use consik\yii2websocket\WebSocketServer;
use yii\console\Controller;

class ServerController extends Controller
{
    public function actionStart()
    {
        $server = new WebSocketServer();
        $server->port = 80; //This port must be busy by WebServer and we handle an error

        $server->on(WebSocketServer::EVENT_WEBSOCKET_OPEN_ERROR, function($e) use($server) {
            echo "Error opening port " . $server->port . "\n";
            $server->port += 1; //Try next port to open
            $server->start();
        });

        $server->on(WebSocketServer::EVENT_WEBSOCKET_OPEN, function($e) use($server) {
            echo "Server started at port " . $server->port;
        });

        $server->start();
    }
}

namespace app\daemons;

use consik\yii2websocket\WebSocketServer;
use Ratchet\ConnectionInterface;

class CommandsServer extends WebSocketServer
{

    /**
     * override method getCommand( ... )
     *
     * For example, we think that all user's message is a command
     */
    protected function getCommand(ConnectionInterface $from, $msg)
    {
        return $msg;
    }

    /**
     * Implement command's method using "command" as prefix for method name
     *
     * method for user's command "ping"
     */
    function commandPing(ConnectionInterface $client, $msg)
    {
        $client->send('Pong');
    }

}

namespace app\daemons;

use consik\yii2websocket\events\WSClientEvent;
use consik\yii2websocket\WebSocketServer;
use Ratchet\ConnectionInterface;

class ChatServer extends WebSocketServer
{

    public function init()
    {
        parent::init();

        $this->on(self::EVENT_CLIENT_CONNECTED, function(WSClientEvent $e) {
            $e->client->name = null;
        });
    }


    protected function getCommand(ConnectionInterface $from, $msg)
    {
        $request = json_decode($msg, true);
        return !empty($request['action']) ? $request['action'] : parent::getCommand($from, $msg);
    }

    public function commandChat(ConnectionInterface $client, $msg)
    {
        $request = json_decode($msg, true);
        $result = ['message' => ''];

        if (!$client->name) {
            $result['message'] = 'Set your name';
        } elseif (!empty($request['message']) && $message = trim($request['message']) ) {
            foreach ($this->clients as $chatClient) {
                $chatClient->send( json_encode([
                    'type' => 'chat',
                    'from' => $client->name,
                    'message' => $message
                ]) );
            }
        } else {
            $result['message'] = 'Enter message';
        }

        $client->send( json_encode($result) );
    }

    public function commandSetName(ConnectionInterface $client, $msg)
    {
        $request = json_decode($msg, true);
        $result = ['message' => 'Username updated'];

        if (!empty($request['name']) && $name = trim($request['name'])) {
            $usernameFree = true;
            foreach ($this->clients as $chatClient) {
                if ($chatClient != $client && $chatClient->name == $name) {
                    $result['message'] = 'This name is used by other user';
                    $usernameFree = false;
                    break;
                }
            }

            if ($usernameFree) {
                $client->name = $name;
            }
        } else {
            $result['message'] = 'Invalid username';
        }

        $client->send( json_encode($result) );
    }

}

 null|\SplObjectStorage $clients = null

daemons\EchoServer.php

daemons\CommandsServer.php

daemons\ChatServer.php

nohup php yii _ControllerName_/_ActionName_ &