usebruno/bruno

Bruno is altering response headers to lowercase when they shouldn't be

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#2012 opened on Apr 4, 2024

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 (12 comments) (4 reactions) (0 assignees)JavaScript (43,787 stars) (2,403 forks)batch import
documentationenhancementgood first issuemid-term-goalmodule-response

Description

Issue

It appears that Bruno lowercases header names, even if the server is not sending it back that way. This could potentially break tests that are relying on testing for a header by name where the case does not match.

Steps to reproduce issue

Attempt a curl to a server and look at the headers. In my case, I will be looking for the 'Server' header on crapi.apisec.ai.

image

Notice how "Server" starts with a capital S.

Now do the same request in Bruno.

image

Notice how everything is now lowercase.

Expected behavior

The case should be preserved so existing tests that are looking for the case can continue to pass.

Contributor guide

Tech stack
javascriptnodejs
Domain
apitesting
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
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
HTTP headersJavaScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Investigate the HTTP client implementation in Bruno, specifically the response parsing where headers are processed. Look for any lowercasing logic in the network layer, possibly in the axios or fetch wrapper. The fix would involve preserving the original header case as received from the server.