HTTP SSE - Client not receiving the backend response

Products

• CA API Gateway

Issue/Introduction

We're doing a POC with an HTTP SSE call to a backend and we're unable to make it work.

The same client using the same call is able to receive the response from the backend by bypassing the gateway.

Is there something we need to do and/or not do (in our framework) to be able to process SSE requests/responses?

Environment

API Gateway 10.1 11.x

Resolution

We do not officially support HTTP SSE with the gateway , you can proxy the content but cannot inspect the content which we just stream it .

Using HTTP/2 and WebSockets provides a similar or better functionality than HTTP SSE.

We have information about using the Route via HTTP/2 assertion, including listen port configurations and cluster-wide property options.

We also have information about using WebSockets, including connection property and cluster-wide property options.