libp2p / libp2p/go-libp2p-pubsub

Fix gossipsub subscription filter bug

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Dominant language
Go
Stars
364
Forks
221
PR merge metrics
No merged PRs in 30d

Description

As discussed [here](https://discuss.libp2p.io/t/filtering-nodes-that-we-gossip-to/1012/21), there is a bug in the gossipsub implementation that causes messages to be sent in certain cases to peers even if those peers should be blocked by subscription filters.

Contributor guide

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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

Start by reading the linked discussion and tracing the gossipsub subscription-filtering path in the repository. Reproduce the cases where messages reach peers that should be blocked, then verify that filtered peers no longer receive those messages.

Written by the indexing model from the issue text.

Assessment

Tech stack
go
Domain
distributed-systems, networking
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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