/**
* Listen on the socket and receive a single packet.
*
* @param $topic Only return packets from this topic (optional)
* @return Packet
*/
public function receivePacket($topic = null)
{
$socket = $this->socket();
while (true) {
if ($topic && !empty($this->inbox[$topic])) {
return array_shift($this->inbox[$topic]);
}
if ($socket->dataAvailable()) {
$packet = Packet::read($socket);
if ($topic && $packet->topic() != $topic) {
$this->inbox[$packet->topic()] = $packet;
continue;
}
return $packet;
}
}
}
/**
* testType method
*
* @return void
*/
public function testType()
{
$packet = new Packet(Packet::TYPE_CONNACK);
$this->assertSame(Packet::TYPE_CONNACK, $packet->type());
}
