tftp_receive
int tftp_receive(int peer, uint16_t *block, struct tftp_stats *tp,
tftp_receive(peer, &block, &ts, NULL, 0);
if (tftp_receive(peer, &block, &tftp_stats, NULL, 0) != 0)
if (tftp_receive(peer, &block, &tftp_stats, rp, n) != 0)