Fault Handling for HTTP 503 with Streaming enabled

[nagashree_b]

I have an api proxy with both request and response streaming enabled (both on proxy endpoint and on the target endpoint). The target flow seems to be getting into an error state when we stream content greater than 20 MB in size with a HTTP 503 error.

error.cause in the trace shows ASYNC_EXCEPTION: Connection reset by peer

Is there a way to add fault handling for this scenario.

I have tried the approach given by @Sudheendras in this post https://community.apigee.com/questions/7049/fault-handling-for-response-503.html

This works perfectly fine when streaming is not enabled. once streaming is enabled, the fault rule does not get executed.

Anyone has any suggestions on what needs to be done to get the faultrule triggered when streaming is enabled?

Adding the trace session captured and the api proxy bundle as well.trace-1600899301031.zip 779-sample-weather-updated-sudheendra-rev1-2020-09.zip