libp2p / libp2p/js-libp2p

WebRTC-Direct v2 spec finalization and implementation

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Dominant language
TypeScript
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Description

Part of the Filecoin ProPGF Batch 3 grant (#3602).

Finalize the WebRTC-Direct v2 specification and ship its implementation in js-libp2p, with interoperability validated against go-libp2p.

This one is time-sensitive. WebRTC-Direct v1 depends on ICE credential munging, which Chrome is in the process of removing. Until v2 ships, that is the connectivity path every browser client uses to dial a public node.

go-libp2p merged its implementation on 2026-07-08 and shipped it in v0.49.0 on 2026-07-28, so the counterpart to interoperate against already exists and the wire format is settled in practice.

Completion criteria: WebRTC-Direct v2 specification finalized and a working implementation shipped in js-libp2p, with interoperability validated against go-libp2p.

Target: November 14, 2026.

Work for this milestone should reference this issue so it collects here.

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

Start by reviewing the WebRTC-Direct v2 wire format in the go-libp2p implementation shipped in v0.49.0, then locate the corresponding js-libp2p networking entry points. Confirm the specification, implement the JavaScript counterpart, and validate interoperability against go-libp2p before the November 14, 2026 target.

Written by the indexing model from the issue text.

Assessment

Tech stack
go, typescript
Domain
distributed-systems, networking
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
25/100

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