ZMQ_SNDBUF and ZMQ_RCVBUF honoured in PGM transport

src/pgm_socket.cpp

@@ -197,9 +197,14 @@ int zmq::pgm_socket_t::open_transport ()
         //  Set transport->can_send_data = FALSE.
         //  Note that NAKs are still generated by the transport.
         rc = pgm_transport_set_recv_only (transport, true, false);
-
         zmq_assert (rc == pgm_ok);
 
+        if (options.rcvbuf) {
+            rc = pgm_transport_set_rcvbuf (transport, (int) options.rcvbuf);
+            if (rc != pgm_ok)
+                return -1;
+        }
+
         //  Set NAK transmit back-off interval [us].
         rc = pgm_transport_set_nak_bo_ivl (transport, 50 * 1000);
         zmq_assert (rc == pgm_ok);
@@ -260,6 +265,12 @@ int zmq::pgm_socket_t::open_transport ()
         rc = pgm_transport_set_send_only (transport, TRUE);
         zmq_assert (rc == pgm_ok);
 
+        if (options.sndbuf) {
+            rc = pgm_transport_set_sndbuf (transport, (int) options.sndbuf);
+            if (rc != pgm_ok)
+                return -1;
+        }
+
         //  Set the size of the send window.
         //  Data rate is in [B/s] options.rate is in [kb/s].
         if (options.rate <= 0) {