Use callback function when deleting request (ARMmbed#109)

Use provided callback function when deleting request.

Author: Arto Kinnunen

source/coap_message_handler.c

@@ -586,6 +586,10 @@ int8_t coap_message_handler_request_delete(coap_msg_handler_t *handle, int8_t se
         tr_error("response transaction not found");
         return -2;
     }
+
+    if (transaction_ptr->resp_cb) {
+        transaction_ptr->resp_cb(transaction_ptr->service_id, transaction_ptr->remote_address, transaction_ptr->remote_port, NULL);
+    }
     transaction_delete(transaction_ptr);
     return 0;
 }

test/coap-service/unittest/stub/coap_message_handler_stub.c

@@ -40,10 +40,6 @@ void transactions_delete_all(uint8_t *address_ptr, uint16_t port)
 
 }
 
-void transactions_delete_all_by_service_id(int8_t service_id)
-{
-}
-
 int8_t coap_message_handler_destroy(coap_msg_handler_t *handle)
 {
     return coap_message_handler_stub.int8_value;