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Authorization header added multiple times

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
58/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Quiet
Tech stack
python

Research direction

Trace how the content scanner combines incoming headers with config values from additional_headers and headers_to_forward. Reproduce both cases, then verify that the upstream request contains at most one Authorization header and that a hardcoded configured value is recorded in the logs when it takes precedence.

Written by the indexing model from the issue text.

Description

Describe the bug
If the incoming request to the content scanner includes Authorization header but the config file also has a hardcoded one (using additional_headers option) or it is being asked to forward (using headers_to_forward) then the header gets added to the upstream request multiple times making it fail, without any clear trace

To Reproduce
Steps to reproduce the behavior:

  1. Configure a hardcoded Authorization header in config with additional_headers.
  2. Send a request to content scanner with Authorization header.

or

  1. Configure the Authorization header in config to be forwarded with headers_to_forward.
  2. Send a request to content scanner with Authorization header.

Expected behavior
At all times, use at most one copy of the Authorization header in the upstream request. If there is a hardcoded one in the config (additional_headers), use this one instead of one in the incoming request - and indicate that in the logs.

Actual behavior
The request fails, there is nothing in the logs which could help you to debug the issue.

Screenshots
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Desktop (please complete the following information):

  • OS: [e.g. iOS]
  • Browser [e.g. chrome, safari]
  • Version [e.g. 22]

Smartphone (please complete the following information):

  • Device: [e.g. iPhone6]
  • OS: [e.g. iOS8.1]
  • Browser [e.g. stock browser, safari]
  • Version [e.g. 22]

Additional context
Add any other context about the problem here.

Dominant language
Python
Stars
25
Forks
16
Avg merge
1d 7h
Merged PRs (30d)
12

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