mqm = GNUNET_MQ_msg_header_extra (mh, 20, 42);
GNUNET_assert (42 == ntohs (mh->type));
GNUNET_assert (sizeof (struct GNUNET_MessageHeader) + 20 == ntohs (mh->size));
mqm = GNUNET_MQ_msg_header_extra (mh, 20, 42);
GNUNET_assert (42 == ntohs (mh->type));
GNUNET_assert (sizeof (struct GNUNET_MessageHeader) + 20 == ntohs (mh->size));