2.5. Configure UDP Transport

RTI Connext Micro comes with several transports. In this example we’ll use the UDP transport and register it with the Connext Micro run-time.

• Configure the UDP transport properties:

  struct UDP_InterfaceFactoryProperty *udp_property = NULL;
  
  udp_property = (struct UDP_InterfaceFactoryProperty *)
      malloc(sizeof(struct UDP_InterfaceFactoryProperty));
  
  if (udp_property != NULL)
  {
      *udp_property = UDP_INTERFACE_FACTORY_PROPERTY_DEFAULT;
  
      /* allow_interface: Names of network interfaces allowed to receive.
       * Allow one loopback (lo) and one NIC (eth0).
       */
      REDA_StringSeq_set_maximum(&udp_property->allow_interface,2);
      REDA_StringSeq_set_length(&udp_property->allow_interface,2);
  
      *REDA_StringSeq_get_reference(&udp_property->allow_interface,0) = DDS_String_dup("lo");
      *REDA_StringSeq_get_reference(&udp_property->allow_interface,1) = DDS_String_dup("eth0");
  }
  else
  {
      /* failure */
  }
  

• Register the UDP transport with updated properties:

  if (!UDP_Interface_register(registry, "_udp",udp_property))
  {
      /* failure */
  }
  

For more details, see Datagram UDP Setup.