if( !buf ) goto error;
sprintf(buf, "%s/streamid=0", mrl);
rtsp_request_setup(rtsp_session,buf);
if (h->prop->num_streams > 1) {
rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play");
if( !buf ) goto error;
sprintf(buf, "%s/streamid=0", mrl);
rtsp_request_setup(rtsp_session,buf);
if (h->prop->num_streams > 1) {
rtsp_schedule_field(rtsp_session, "Transport: x-pn-tng/tcp;mode=play,rtp/avp/tcp;unicast;mode=play");