Central repository for work on libp2p

This repository is the central place for Rust development of the libp2p spec.

Getting started

• Main documentation can be found on https://docs.rs/libp2p.

• The examples folder contains small binaries showcasing the many protocols in this repository.

• For security related issues please file a private security vulnerability report . Please do not file a public issue on GitHub.

• To report bugs, suggest improvements or request new features please open a GitHub issue on this repository.

• For rust-libp2p specific questions please use the GitHub Discussions forum https://github.com/libp2p/rust-libp2p/discussions.

• For discussions and questions related to multiple libp2p implementations please use the libp2p Discourse forum https://discuss.libp2p.io.

• For synchronous discussions join the open rust-libp2p maintainer calls or the biweekly libp2p community calls.

Repository Structure

The main components of this repository are structured as follows:

• core/: The implementation of libp2p-core with its Transport and StreamMuxer API on which almost all other crates depend.

• transports/: Implementations of transport protocols (e.g. TCP) and protocol upgrades (e.g. for authenticated encryption, compression, ...) based on the libp2p-core Transport API.

• muxers/: Implementations of the StreamMuxer interface of libp2p-core, e.g. (sub)stream multiplexing protocols on top of (typically TCP) connections. Multiplexing protocols are (mandatory) Transport upgrades.

• swarm/: The implementation of libp2p-swarm building on libp2p-core with the central interfaces NetworkBehaviour and ConnectionHandler used to implement application protocols (see protocols/).

• protocols/: Implementations of application protocols based on the libp2p-swarm APIs.

• misc/: Utility libraries.

• libp2p/examples/: Worked examples of built-in application protocols (see protocols/) with common Transport configurations.

Community Guidelines

The libp2p project operates under the IPFS Code of Conduct.

tl;dr

• Be respectful.
• We're here to help: abuse@ipfs.io
• Abusive behavior is never tolerated.
• Violations of this code may result in swift and permanent expulsion from the IPFS [and libp2p] community.
• "Too long, didn't read" is not a valid excuse for not knowing what is in this document.

Maintainers

(In alphabetical order.)

• Guillaume Michel (@guillaumemichel)
• João Oliveira (@jxs)

Notable users

(open a pull request if you want your project to be added here)

• COMIT - Bitcoin–Monero Cross-chain Atomic Swap.
• Forest - An implementation of Filecoin written in Rust.
• fuel-core - A Rust implementation of the Fuel protocol.
• HotShot - Decentralized sequencer in Rust developed by Espresso Systems.
• ipfs-embed - A small embeddable ipfs implementation used and maintained by Actyx.
• Homestar - An InterPlanetary Virtual Machine (IPVM) implementation used and maintained by Fission.
• beetle - Next-generation implementation of IPFS for Cloud & Mobile platforms.
• Lighthouse - Ethereum consensus client in Rust.
• Locutus - Global, observable, decentralized key-value store.
• OpenMina - In-browser Mina Rust implementation.
• rust-ipfs - IPFS implementation in Rust.
• Safe Network - Safe Network implementation in Rust.
• Starcoin - A smart contract blockchain network that scales by layering.
• Subspace - Subspace Network reference implementation
• Substrate - Framework for blockchain innovation, used by Polkadot.
• Taple - Sustainable DLT for asset and process traceability by OpenCanarias.
• Ceylon - A Multi-Agent System (MAS) Development Framework.

lib.rs:

Implementation of the libp2p-specific mDNS protocol.

mDNS is a protocol defined by RFC 6762 that allows querying nodes that correspond to a certain domain name.

In the context of libp2p, the mDNS protocol is used to discover other nodes on the local network that support libp2p.

Usage

This crate provides a Mdns and TokioMdns, depending on the enabled features, which implements the NetworkBehaviour trait. This struct will automatically discover other libp2p nodes on the local network.