akka/akka-http

Server Request timeout response is delivered out of band

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#2,184 opened on Aug 31, 2018

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Description

Seen in the forums here: https://discuss.lightbend.com/t/akka-http-mapresponse-ignores-some-responses/1975/6

Intuitively request timeouts happens while in the routing tree, but actually that's not how they are implemented, which means that for example mapResponse does not also transform the request timeout response if the timeout hits.

Can we improve, and make mapResponse also map timeout responses out of the box, or something else that makes it more intuitive combining a route with the timeout?

If not, can we use documentation to make it more clear that it happens at a lower level?

Contributor guide

Research direction
Investigate the implementation of request timeout in Akka HTTP and how mapResponse currently interacts with it. Propose a fix to ensure timeout responses are also transformed by mapResponse, or document the current behavior.
Tech stack
scala
Domain
backend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
ScalaAkka HTTP
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65