- int payload_len = header_payload_len();
- if (payload_len <= MAX_PKT_LEN) // reasonable?
- enter_have_header(payload_len); // yes.
- else
- enter_search(); // no.
+ int payload_len;
+ int whitener_offset;
+ header_payload(&payload_len, &whitener_offset);
+ enter_have_header(payload_len, whitener_offset);
+
+ if (d_packetlen == 0){ // check for zero-length payload
+ // build a zero-length message
+ // NOTE: passing header field as arg1 is not scalable
+ gr_message_sptr msg =
+ gr_make_message(0, d_packet_whitener_offset, 0, 0);
+
+ d_target_queue->insert_tail(msg); // send it
+ msg.reset(); // free it up
+
+ enter_search();
+ }