add: fprintf(stderr,"Received Who-Is Request!\r");
context: void WhoIsHandler(  uint8_t *service_request,  uint16_t service_len,  BACNET_ADDRESS *src){  int len = 0;  int32_t low_limit = 0;  int32_t high_limit = 0;  len = whois_decode_service_request(    service_request,    service_len,    &low_limit,    &high_limit);  if (len == 0)    I_Am_Request = true;  else if (len != -1)  {     if ((Device_Id >= low_limit) && (Device_Id <= high_limit))      I_Am_Request = true;  }  return;  }