public function publish(Stream $stream, $topic, $message, $qos = 0, $dup = false)
{
$deferred = new Deferred();
$packet = new Publish($this->version);
$packet->setTopic($topic);
$packet->setMessageId($this->messageCounter++);
$packet->setQos($qos);
$packet->setDup($dup);
$packet->addRawToPayLoad($message);
$success = $this->sentMessageToStream($stream, $packet);
if ($success) {
$deferred->resolve($stream);
} else {
$deferred->reject();
}
return $deferred->promise();
}
