Give access to the HTTP error response

[ri4a]

When sending a document fails with an HTTP error, it is not currently possible to determine this and get the HTTP error. That would be very helpful, since that error message could be shown/sent to the sender in the UI/webhook. With the HTTP response code it would also be possible to determine whether a retry could work (500: yes, 400: probably not).

[phax]

This can be achieved with the current solution like this:

1. remember the exception in sending:

   final Wrapper <Phase4Exception> aSendingExceptionKeeper = new Wrapper <> ();
   Phase4PeppolSender.builder ()....sendMessageAndCheckForReceipt (aSendingExceptionKeeper::set);

2. afterwards evaluate the sending exception

     final Phase4Exception aSendingEx = aSendingExceptionKeeper.get ();
     if (aSendingEx != null)
     {
       if (aSendingEx.getCause () instanceof ExtendedHttpResponseException)
       {
         final ExtendedHttpResponseException exr = (ExtendedHttpResponseException) aSendingEx.getCause ();
         LOGGER.error ("Error sending Peppol message via AS4 due to HTTP status code " + exr.getStatusCode ());
       }
       else
         LOGGER.error ("Exception sending AS4 user message", aSendingEx);
     }

   The ExtendedHttpResponseException has access to other parts of the HTTP response as well

[ri4a]

Fantastic Philip, thank you!