Method parsePacket

Arduino/libraries/Ethernet2/src/EthernetUdp2.cpp:122–149

}

int EthernetUDP::parsePacket()
{
  // discard any remaining bytes in the last packet
  flush();

  if (w5500.getRXReceivedSize(_sock) > 0)
  {
    //HACK - hand-parse the UDP packet using TCP recv method
    uint8_t tmpBuf[8];
    int ret =0; 
    //read 8 header bytes and get IP and port from it
    ret = recv(_sock,tmpBuf,8);
    if (ret > 0)
    {
      _remoteIP = tmpBuf;
      _remotePort = tmpBuf[4];
      _remotePort = (_remotePort << 8) + tmpBuf[5];
      _remaining = tmpBuf[6];
      _remaining = (_remaining << 8) + tmpBuf[7];

      // When we get here, any remaining bytes are the data
      ret = _remaining;
    }
    return ret;
  }
  // There aren't any packets available
  return 0;
}

int EthernetUDP::read()
{