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RTCS recvfrom() not working on consistent lines

Question asked by Ravindra Gurjar on Jun 13, 2016
Latest reply on Jun 20, 2016 by Ravindra Gurjar

Here is my code to send/receive data on UDP on a MQX task


   uint32_t error = RTCS_create();

   if (error != RTCS_OK)


      printf("\nRTCS failed to initialize, error = %X", error);



   ip_data.ip = ENET_IPADDR;

   ip_data.mask = ENET_IPMASK;

   ip_data.gateway = ENET_GATEWAY;



   /* calcualte unique mac address from IP ADDRES */

   ENET_get_mac_address (ENET_DEVICE, ENET_IPADDR, enet_address);

   error = ipcfg_init_device (ENET_DEVICE, enet_address);

   if (error != RTCS_OK)


      printf("\nFailed to initialize ethernet device, error = %X", error);



   error = ipcfg_bind_staticip (ENET_DEVICE, &ip_data);


    sock_udp = socket(PF_INET, SOCK_DGRAM, 0);

    local_addr.sin_family      = AF_INET;

    local_addr.sin_port        = DEF_HARTIP_PORT;  

    local_addr.sin_addr.s_addr = INADDR_ANY;

    bind(sock_udp, (sockaddr *)(&local_addr), sizeof(sockaddr_in));

    while (1)


      len_request = recvfrom(sock_udp, &msg_buffer[0], sizeof(hartmsg_buffer), 0, (struct sockaddr *) &local_addr,&remote_len);

     ...Process the received data * compose response

      sendto(sock_udp, &hartmsg_buffer[0], tx_size, 0, (struct sockaddr *)&local_addr,sizeof(sockaddr_in));             




When i hook up the UDP client, the communication works fine for few iterations. The recvfrom() dont process all the requests and 1 out 10 request dont generate response.


Am i missing something like a time delay or something?