/**
* Build packet data
*
* @param int & $length
* @return string
* @throws Exception
*/
public final function build(&$length = 0)
{
if ($this->protocol_type == self::FIXED_ONLY) {
$payload = $this->payload();
} else {
if ($this->protocol_type == self::WITH_VARIABLE) {
$payload = $this->payload();
} else {
if ($this->protocol_type == self::WITH_PAYLOAD) {
$payload = $this->payload();
} else {
throw new Exception('Invalid protocol type');
}
}
}
$length = strlen($payload);
$this->header->setPayloadLength($length);
$length = $this->header->getFullLength();
Debug::Log(Debug::DEBUG, 'Message Build: total length=' . $length);
return $this->header->build() . $payload;
}
