UDP Source gr_udp_source from gnuradio import gr gr.udp_source($type.size*$vlen, $ipaddr, $port, $psize, $eof, $wait) set_mtu($mtu) Output Type type enum IP Address ipaddr 127.0.0.1 string Port port 1234 int Payload Size psize 1472 int Null Pkt is EOF eof True bool Wait for Data wait True bool Vec Length vlen 1 int $vlen > 0 out $type $vlen