public function onMessage(WebSocketConnection $connection, $msg)
{
$message = \Blackjack\json_parse($msg);
if (!isset($message['alias'])) {
return;
}
$alias = $message['alias'];
if ($alias === 'subscribe') {
if ($this->isSubscribed($connection) || !isset($message['table_id'])) {
$connection->close();
return;
}
$tableId = $message['table_id'];
/** @var WebSocketObservableTable $table */
$table = $this->tableManager->getTableById($tableId);
if ($table === null) {
return;
}
$this->subscribe($connection, $table);
return;
}
if ($alias === 'unsubscribe') {
if (!$this->isSubscribed($connection)) {
return;
}
$this->unsubscribe($connection);
return;
}
if ($alias === 'query') {
$connection->send(json_encode(['alias' => 'tables', 'data' => ['tables' => $this->tableManager->getTables()->map(function (Table $table) {
return ['id' => $table->getId(), 'players' => $table->getSeats()->filter(function (TableSeat $seat) {
return $seat->getPlayer() !== null;
})->map(function (TableSeat $seat) {
return ['player' => $seat->getPlayer()->getName()];
})->elements()];
})->elements()]]));
return;
}
}
/**
* Watch for incoming data.
*
* @param Connection $connection
*/
private function handleSocketEvents(Connection $connection)
{
$buffer = '';
$connection->getSocket()->on('data', function ($data) use(&$buffer, $connection) {
$buffer .= $data;
while (($newlinePosition = strpos($buffer, "\n")) !== false) {
$jsonMessage = substr($buffer, 0, $newlinePosition);
$buffer = substr($buffer, $newlinePosition + 1);
try {
$connection->setLastMessageReceivedAt(new \DateTime());
$message = $this->deserializer->deserialize(\Blackjack\json_parse($jsonMessage));
$connection->notify($message);
} catch (\Exception $e) {
// Invalid message
$connection->getSocket()->write(json_encode(['alias' => 'invalid_message']));
$connection->getSocket()->close();
return;
}
}
// Limit buffer to 1 MB
$bufferSizeLimit = 1024 * 1024;
if (strlen($buffer) > $bufferSizeLimit) {
$buffer = substr($buffer, strlen($buffer) - $bufferSizeLimit);
}
});
$connection->getSocket()->on('close', function () use($connection) {
$this->handlePlayerDisconnection($connection);
});
}
