libp2p / libp2p/py-libp2p

P2P File Sharing Across NATs

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#877 6 comments 2 reactions 0 assignees View on GitHub

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Dominant language
Python
Stars
624
Forks
256
Avg merge
1d 34m
Merged PRs (30d)
47

Description

Problem: Developers struggle to share data between devices behind NAT/firewalls.

Idea: Build a lightweight file-sharing app where peers can discover each other via peerstore and exchange files using NAT traversal (STUN/relay if needed).

Hack Value: Shows off both NAT traversal and the practical use of peerstore for persisting and reconnecting to peers.

Demo Impact: Two laptops behind different Wi-Fi routers sending files directly peer-to-peer without central servers.

Required Outcome: We will add the top 5 implementations at the main py-libp2p repository (new section: product-innovation).

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 py-libp2p's existing peerstore and NAT traversal capabilities, including STUN or relay support. Define the peer-discovery and file-exchange scope for two laptops behind different routers, then verify the result with a direct peer-to-peer transfer demo. The required outcome also mentions adding the top five implementations to a new product-innovation section.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
distributed-systems, networking
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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