libp2p / libp2p/go-libp2p

Be smarter when using MDNS

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#376 3 comments 0 reactions 0 assignees View on GitHub

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exp/expert kind/bug kind/enhancement P3
Dominant language
Go
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Forks
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Avg merge
13d 21h
Merged PRs (30d)
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Description

We should:

1. Iterate over all the interfaces we're listening on that support multicast.
2. Figure out what IP addresses we have assigned on those interfaces.
3. Look up the IP in our host's listen addresses.
4. Figure out the correct port to announce.
5. Announce that port over the correct interface.

However, this means we'll need to manage multiple mdns "servers".

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 tracing the existing mDNS server setup and how host listen addresses and network interfaces are discovered. Review the interface, multicast, and port-selection paths before implementing the issue's five-step flow. Done means multicast-capable interfaces announce the correct listen port through separate mDNS servers for each relevant interface.

Written by the indexing model from the issue text.

Assessment

Tech stack
go
Domain
networking
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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