Async exceptions not handled by error pages in war deployments

[chunlinyao]

I am using spring-boot 2.1.7.RELEASE, and packaged it as war deployed in a Tomcat 8.5.45.

I have a async rest controller, when it take long time to process and throw a AsyncRequestTimeoutException, The client get a response with status == 200 and empty body.

When packaged as jar and run with embedded tomcat, I can get 503 error.

I debugged in and found ErrorPageFilter suppressed the status, and doesn't send any body to client.

[bclozel]

The ErrorPageFilter is not registered against the DispatcherType.ASYNC, which means that it's not called during the ASYNC dispatch and the error status is not set. We should update the ErrorPageFilterConfiguration to register with the correct DispatcherType enum set.

[wilkinsona]

Re-opening to restore the ordering.

[wilkinsona]

The ordering was restored in 115ea87.