matrix-org / matrix-org/gomatrixserverlib

Federation client shouldn't follow CNAME records in SRV records

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#127 3 comments 0 reactions 0 assignees View on GitHub

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T-Defect
Dominant language
Go
Stars
67
Forks
60
PR merge metrics
No merged PRs in 30d

Description

RFC2782 forbids CNAME records as SRV record targets but we need to check it because Go completely ignores that

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No file or test is named in the issue. Start by locating the federation client's SRV-record resolution entry point and inspect how CNAME targets are handled; done means the client no longer follows CNAME records returned as SRV targets and regression coverage verifies that behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
go
Domain
networking
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

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