Establish websocket connection to On-Premise-System from BAS

[stefan_heitzer]

Hi experts,

recently we tried to establish a connection to a websocket which runs on our On-Premise S/4 HANA System from BAS. We have a corresponding Cloud Connector up and running and also the settings within the destination are prepared to allow the websocket connection (all paths to the corresponding apc are available and also reachable through the Cloud Connector). Anyway... when we try to build up the connection we always receive an error without any message at all. We also tried via transaction SAPC_CROSS_ORIGIN to allow the request from the BAS origin without any success... Does anybody of you have a clue what the problem could be?

Looking forward to your answers!

Greetings

Stef

[wridgeu]

Hi stefan.heitzer,

It's been quite a while now. Did you figure out what the issue was or rather could you resolve it? If so, would you mind sharing how?

BR,

Marco

[SebastianFuchs]

Please support Customer Influence Request Support of proxying WebSocket requests from BAS to On-Premise systems

Greetings
Sebastian

[gregorw]

There is good news due to the Influencing Request:
SAP will be delivering this feature in Q2 2023.

[yuval_morad]

ok I am not sure what is ABAP push channel, do you mean deploy your application to ABAP repository?

[stefan_heitzer]

Hey Yuval,

it's a way how you can create a Websocket within a SAP System.

It has nothing to do with deployment of the application.

If you need further information here is a good introduction into the topic:

Introduction to ABAP Channels

Greetings

Stef

[yuval_morad]

Hi

please check this blog
https://blogs.sap.com/2021/08/31/connect-to-external-data-sources-with-sap-business-application-stud...

[stefan_heitzer]

Hi Yuval,

thank you for your reply and for your post, but this doesn't solve the problem.

We are able to consume OData V2 and V4 services from our On-Premise System.

What we are not able to achieve is to connect to an ABAP Push Channel hosted on the same system 😞

Greetings

Stef