envoyproxy/envoy

Reason phrase not passed from upstream service

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#31,277 opened on Dec 11, 2023

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area/httpbughelp wanted

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Description

Description:

Envoy does not return reason phrase from upstream services that return a http-code 422 with Unprocessable Entity/Content but rather a HTTP/1.1 422 unknown.

Expected result:

< HTTP/1.1 422 Unprocessable Entity
< Server: gunicorn

Actual result:

< HTTP/1.1 422 unknown
< server: gunicorn

Contributor guide

Research direction
Examine code that maps HTTP status codes to reason phrases; trace how upstream response reason phrase is passed or overwritten.
Tech stack
cpp
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
C++HTTP
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60