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<?php |
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/** |
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* This symfony command runs the websocket server for real-time notifications |
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* |
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* @package BZiON |
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* @license https://github.com/allejo/bzion/blob/master/LICENSE.md GNU General Public License Version 3 |
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*/ |
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namespace BZIon\Command; |
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use BZIon\Session\DatabaseSessionHandler; |
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use BZIon\Socket\EventPusher; |
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use Ratchet\Server\IoServer; |
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use Ratchet\Session\SessionProvider; |
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use Ratchet\WebSocket\WsServer; |
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use React\EventLoop\Factory as EventLoopFactory; |
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use React\Socket\Server; |
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use Symfony\Component\Console\Input\InputInterface; |
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use Symfony\Component\Console\Input\InputOption; |
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use Symfony\Component\Console\Output\OutputInterface; |
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class ServerCommand extends Command |
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{ |
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protected function configure() |
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{ |
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$this |
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->setName('bzion:server') |
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->setDescription('Run notification server') |
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->addOption( |
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'push', |
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'p', |
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InputOption::VALUE_OPTIONAL, |
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'The push port' |
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) |
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->addOption( |
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'pull', |
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'l', |
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InputOption::VALUE_OPTIONAL, |
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'The pull port' |
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); |
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} |
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protected function execute(InputInterface $input, OutputInterface $output) |
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{ |
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// Make sure that websockets are enabled in the config so that the proper |
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// session storage handler is used |
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if (!$this->getContainer()->getParameter('bzion.features.websocket.enabled')) { |
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$message = "You need to enable websockets in your config before using the push server"; |
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$output->writeln("<bg=red;options=bold>\n\n [ERROR] $message\n</>"); |
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return; |
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} |
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$loop = EventLoopFactory::create(); |
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$pusher = new EventPusher($loop, $output); |
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$pushPort = ($input->getOption('push')) ?: $this->getContainer() |
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->getParameter('bzion.features.websocket.push_port'); |
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$pullPort = ($input->getOption('pull')) ?: $this->getContainer() |
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->getParameter('bzion.features.websocket.pull_port'); |
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$pullSocket = new Server($loop); |
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$pullSocket->on('connection', function ($conn) use ($pusher) { |
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$conn->on('data', function ($data) use ($pusher) { |
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$pusher->onServerEvent(json_decode($data)); |
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}); |
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}); |
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// Bind to 127.0.0.1, so that only the server can send messages to the socket |
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$pullSocket->listen($pullPort, '127.0.0.1'); |
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$output->writeln(" <fg=green>Running pull service on port $pullPort</>"); |
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$session = new SessionProvider( |
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$pusher, |
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new DatabaseSessionHandler() |
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); |
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$pushSocket = new Server($loop); |
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$webServer = new IoServer( |
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new WsServer( |
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$session |
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), |
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$pushSocket |
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); |
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// Binding to 0.0.0.0 means remotes can connect |
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$pushSocket->listen($pushPort, '0.0.0.0'); |
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$output->writeln(" <fg=green>Running push service on port $pushPort</>"); |
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$output->writeln("\n <bg=green;options=bold>Welcome to the BZiON live notification server!</>"); |
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$loop->run(); |
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} |
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} |
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allejo /
bzion
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.