public function offsetRequest($payloads)
{
if (!isset($payloads['data'])) {
throw new \Kafka\Exception\Protocol('given offset data invalid. `data` is undefined.');
}
if (!isset($payloads['replica_id'])) {
$payloads['replica_id'] = -1;
}
$header = self::requestHeader('kafka-php', 0, self::OFFSET_REQUEST);
$data = self::pack(self::BIT_B32, $payloads['replica_id']);
$data .= self::encodeArray($payloads['data'], array(__CLASS__, '_encodeOffsetTopic'));
$data = self::encodeString($header . $data, self::PACK_INT32);
return $this->stream->write($data);
}