How to set replyTo header with OutboundMessageBuilder

radekm

Hi,

we're trying to use Python and new Java APIs but are we struggling to set replyTo header on outgoing messages.

In old Java API you can just call BytesMessage.setReplyTo. Is there a way to do it in Python and new Java APIs with OutboundMessageBuilder?

Thanks

Tamimi

Hey @radekm ! You can use the RequestReply message builder in the Python (and new Java) API to create a request-reply message requester/replier. Is this something that you can make use of? We have sample code for the request-reply pattern coming soon in the samples repo, but I put a snippet on this post here https://solace.community/discussion/1221/solace-python-api-for-request-reply-architecture if you want to get started. Let me know what your use-case is and I can hopefully shed more light on this !

radekm

Hi @Tamimi

Thanks for the answer. I looked at the snipped for requestor but still don't see how to set replyTo topic. It seems the example sets only request_destination

from solace.messaging.publisher.request_reply_message_publisher import RequestReplyMessagePublisher

# Create a direct message requestor and register the error handler
direct_requestor: RequestReplyMessagePublisher = messaging_service.request_reply() \
                        .create_request_reply_message_publisher_builder() \
                        .build()

direct_requestor.start()

outbound_msg = messaging_service.message_builder().build(f'\n{insert_your_message_here}')
response = direct_requestor_blocking.publish_await_response(request_message=outbound_msg, \
                                                                    request_destination=destination_topic, \
                                                                    reply_timeout=10000)

Unfortunately our system expects that replies are send to {replier-service-name}/to/{requestor-service-name}/{subject} so we can easily filter all replies by source or destination service or by subject