The Go implementation of the libp2p Networking Stack.
# Project status
[](https://waffle.io/libp2p/go-libp2p/metrics/throughput)
[**`Weekly Core Dev Calls`**](https://github.com/ipfs/pm/issues/674)
# Table of Contents
- [Background](#background)
- [Bundles](#bundles)
- [Usage](#usage)
- [Install](#install)
- [API](#api)
- [Examples](#examples)
- [Development](#development)
- [Tests](#tests)
- [Packages](#packages)
- [Contribute](#contribute)
- [License](#license)
## Background
[libp2p](https://github.com/libp2p/specs) is a networking stack and library modularized out of [The IPFS Project](https://github.com/ipfs/ipfs), and bundled separately for other tools to use.
>
libp2p is the product of a long, and arduous quest of understanding -- a deep dive into the internet's network stack, and plentiful peer-to-peer protocols from the past. Building large scale peer-to-peer systems has been complex and difficult in the last 15 years, and libp2p is a way to fix that. It is a "network stack" -- a protocol suite -- that cleanly separates concerns, and enables sophisticated applications to only use the protocols they absolutely need, without giving up interoperability and upgradeability. libp2p grew out of IPFS, but it is built so that lots of people can use it, for lots of different projects.
>
> We will be writing a set of docs, posts, tutorials, and talks to explain what p2p is, why it is tremendously useful, and how it can help your existing and new projects. But in the meantime, check out
>
> - [**Our developing collection of docs**](https://docs.libp2p.io)
> - [**Our community discussion forums**](https://discuss.libp2p.io)
> - [**The libp2p Specification**](https://github.com/libp2p/specs)
> - [**go-libp2p implementation**](https://github.com/libp2p/go-libp2p)
> - [**js-libp2p implementation**](https://github.com/libp2p/js-libp2p)
> - [**rust-libp2p implementation**](https://github.com/libp2p/rust-libp2p)
## Usage
This repository (`go-libp2p`) serves as the entrypoint to the universe of modules that compose the Go implementation of the libp2p stack.
We mainly use [Go modules](https://github.com/golang/go/wiki/Modules) for our dependency and release management (and thus require go >= 1.11). In order to get the best developer experience, we recommend you do too. Otherwise, you may ocassionally encounter a breaking build as you'll be running off master (which, by definition, is not guaranteed to be stable).
You can start using go-libp2p in your Go application simply by adding imports from our repos, e.g.:
```go
import "github.com/libp2p/go-libp2p"
```
The next time you run `go get` or `go build`, the Go build tools will look for [available releases](https://github.com/libp2p/go-libp2p/releases), and will pick the highest available one.
As new releases of go-libp2p are made available, you can upgrade your application by manually editing your `go.mod` file, or using the [Go tools](https://golang.org/cmd/go/#hdr-Maintaining_module_requirements) to maintain module requirements.
### API
[](https://godoc.org/github.com/libp2p/go-libp2p)
### Examples
Examples can be found in the [examples repo](https://github.com/libp2p/go-libp2p-examples).
## Development
### Dependencies
While developing, you need to use [gx to install and link your dependencies](https://github.com/whyrusleeping/gx#dependencies), to do that, run:
```sh
> make deps
```
Before commiting and pushing to Github, make sure to rewind the gx'ify of dependencies. You can do that with:
```sh
> make publish
```
### Tests
Running of individual tests is done through `gx test `
```bash
$ cd $GOPATH/src/github.com/libp2p/go-libp2p
$ make deps
$ gx test ./p2p/
```
### Packages
> This table is generated using the module [`package-table`](https://github.com/ipfs-shipyard/package-table) with `package-table --data=package-list.json`.
List of packages currently in existence for libp2p:
| Name | CI | Coverage | Description |
| ---------|---------|---------|--------- |
| **Libp2p** |
| [`go-libp2p`](//github.com/libp2p/go-libp2p) | [](https://travis-ci.com/libp2p/go-libp2p) | [](https://codecov.io/gh/libp2p/go-libp2p) | go-libp2p entry point |
| [`go-libp2p-host`](//github.com/libp2p/go-libp2p-host) | [](https://travis-ci.com/libp2p/go-libp2p-host) | [](https://codecov.io/gh/libp2p/go-libp2p-host) | libp2p "host" interface |
| [`go-libp2p-blankhost`](//github.com/libp2p/go-libp2p-blankhost) | [](https://travis-ci.com/libp2p/go-libp2p-blankhost) | [](https://codecov.io/gh/libp2p/go-libp2p-blankhost) | minimal implementation of the "host" interface |
| **Network** |
| [`go-libp2p-net`](//github.com/libp2p/go-libp2p-net) | [](https://travis-ci.com/libp2p/go-libp2p-net) | [](https://codecov.io/gh/libp2p/go-libp2p-net) | libp2p connection and "network" interfaces |
| [`go-libp2p-swarm`](//github.com/libp2p/go-libp2p-swarm) | [](https://travis-ci.com/libp2p/go-libp2p-swarm) | [](https://codecov.io/gh/libp2p/go-libp2p-swarm) | reference implementation |
| **Transport** |
| [`go-libp2p-transport`](//github.com/libp2p/go-libp2p-transport) | [](https://travis-ci.com/libp2p/go-libp2p-transport) | [](https://codecov.io/gh/libp2p/go-libp2p-transport) | interfaces |
| [`go-ws-transport`](//github.com/libp2p/go-ws-transport) | [](https://travis-ci.com/libp2p/go-ws-transport) | [](https://codecov.io/gh/libp2p/go-ws-transport) | WebSocket transport |
| [`go-tcp-transport`](//github.com/libp2p/go-tcp-transport) | [](https://travis-ci.com/libp2p/go-tcp-transport) | [](https://codecov.io/gh/libp2p/go-tcp-transport) | TCP transport |
| [`go-libp2p-quic-transport`](//github.com/libp2p/go-libp2p-quic-transport) | [](https://travis-ci.com/libp2p/go-libp2p-quic-transport) | [](https://codecov.io/gh/libp2p/go-libp2p-quic-transport) | QUIC transport |
| [`go-udp-transport`](//github.com/libp2p/go-udp-transport) | [](https://travis-ci.com/libp2p/go-udp-transport) | [](https://codecov.io/gh/libp2p/go-udp-transport) | UDP transport |
| [`go-utp-transport`](//github.com/libp2p/go-utp-transport) | [](https://travis-ci.com/libp2p/go-utp-transport) | [](https://codecov.io/gh/libp2p/go-utp-transport) | uTorrent transport (UTP) |
| [`go-libp2p-circuit`](//github.com/libp2p/go-libp2p-circuit) | [](https://travis-ci.com/libp2p/go-libp2p-circuit) | [](https://codecov.io/gh/libp2p/go-libp2p-circuit) | relay transport |
| [`go-libp2p-transport-upgrader`](//github.com/libp2p/go-libp2p-transport-upgrader) | [](https://travis-ci.com/libp2p/go-libp2p-transport-upgrader) | [](https://codecov.io/gh/libp2p/go-libp2p-transport-upgrader) | upgrades multiaddr-net connections into full libp2p transports |
| [`go-libp2p-reuseport-transport`](//github.com/libp2p/go-libp2p-reuseport-transport) | [](https://travis-ci.com/libp2p/go-libp2p-reuseport-transport) | [](https://codecov.io/gh/libp2p/go-libp2p-reuseport-transport) | partial transport for building transports that reuse ports |
| **Encrypted Channels** |
| [`go-conn-security`](//github.com/libp2p/go-conn-security) | [](https://travis-ci.com/libp2p/go-conn-security) | [](https://codecov.io/gh/libp2p/go-conn-security) | interfaces |
| [`go-libp2p-secio`](//github.com/libp2p/go-libp2p-secio) | [](https://travis-ci.com/libp2p/go-libp2p-secio) | [](https://codecov.io/gh/libp2p/go-libp2p-secio) | SecIO crypto channel |
| [`go-conn-security-multistream`](//github.com/libp2p/go-conn-security-multistream) | [](https://travis-ci.com/libp2p/go-conn-security-multistream) | [](https://codecov.io/gh/libp2p/go-conn-security-multistream) | multistream multiplexed meta crypto channel |
| **Private Network** |
| [`go-libp2p-interface-pnet`](//github.com/libp2p/go-libp2p-interface-pnet) | [](https://travis-ci.com/libp2p/go-libp2p-interface-pnet) | [](https://codecov.io/gh/libp2p/go-libp2p-interface-pnet) | interfaces |
| [`go-libp2p-pnet`](//github.com/libp2p/go-libp2p-pnet) | [](https://travis-ci.com/libp2p/go-libp2p-pnet) | [](https://codecov.io/gh/libp2p/go-libp2p-pnet) | reference implementation |
| **Stream Muxers** |
| [`go-stream-muxer`](//github.com/libp2p/go-stream-muxer) | [](https://travis-ci.com/libp2p/go-stream-muxer) | [](https://codecov.io/gh/libp2p/go-stream-muxer) | interfaces |
| [`go-smux-yamux`](//github.com/whyrusleeping/go-smux-yamux) | [](https://travis-ci.com/whyrusleeping/go-smux-yamux) | [](https://codecov.io/gh/whyrusleeping/go-smux-yamux) | YAMUX stream multiplexer |
| [`go-smux-multiplex`](//github.com/whyrusleeping/go-smux-multiplex) | [](https://travis-ci.com/whyrusleeping/go-smux-multiplex) | [](https://codecov.io/gh/whyrusleeping/go-smux-multiplex) | MPLEX stream multiplexer |
| **NAT Traversal** |
| [`go-libp2p-nat`](//github.com/libp2p/go-libp2p-nat) | [](https://travis-ci.com/libp2p/go-libp2p-nat) | [](https://codecov.io/gh/libp2p/go-libp2p-nat) | |
| **Peerstore** |
| [`go-libp2p-peerstore`](//github.com/libp2p/go-libp2p-peerstore) | [](https://travis-ci.com/libp2p/go-libp2p-peerstore) | [](https://codecov.io/gh/libp2p/go-libp2p-peerstore) | interfaces and reference implementation |
| **Connection Manager** |
| [`go-libp2p-interface-connmgr`](//github.com/libp2p/go-libp2p-interface-connmgr) | [](https://travis-ci.com/libp2p/go-libp2p-interface-connmgr) | [](https://codecov.io/gh/libp2p/go-libp2p-interface-connmgr) | interface |
| [`go-libp2p-connmgr`](//github.com/libp2p/go-libp2p-connmgr) | [](https://travis-ci.com/libp2p/go-libp2p-connmgr) | [](https://codecov.io/gh/libp2p/go-libp2p-connmgr) | reference implementation |
| **Routing** |
| [`go-libp2p-routing`](//github.com/libp2p/go-libp2p-routing) | [](https://travis-ci.com/libp2p/go-libp2p-routing) | [](https://codecov.io/gh/libp2p/go-libp2p-routing) | routing interfaces |
| [`go-libp2p-record`](//github.com/libp2p/go-libp2p-record) | [](https://travis-ci.com/libp2p/go-libp2p-record) | [](https://codecov.io/gh/libp2p/go-libp2p-record) | record type and validator logic |
| [`go-libp2p-routing-helpers`](//github.com/libp2p/go-libp2p-routing-helpers) | [](https://travis-ci.com/libp2p/go-libp2p-routing-helpers) | [](https://codecov.io/gh/libp2p/go-libp2p-routing-helpers) | helpers for composing routers |
| [`go-libp2p-kad-dht`](//github.com/libp2p/go-libp2p-kad-dht) | [](https://travis-ci.com/libp2p/go-libp2p-kad-dht) | [](https://codecov.io/gh/libp2p/go-libp2p-kad-dht) | Kademlia-like router |
| [`go-libp2p-pubsub-router`](//github.com/libp2p/go-libp2p-pubsub-router) | [](https://travis-ci.com/libp2p/go-libp2p-pubsub-router) | [](https://codecov.io/gh/libp2p/go-libp2p-pubsub-router) | record-store over pubsub adapter |
| **Consensus** |
| [`go-libp2p-consensus`](//github.com/libp2p/go-libp2p-consensus) | [](https://travis-ci.com/libp2p/go-libp2p-consensus) | [](https://codecov.io/gh/libp2p/go-libp2p-consensus) | consensus protocols interfaces |
| [`go-libp2p-raft`](//github.com/libp2p/go-libp2p-raft) | [](https://travis-ci.com/libp2p/go-libp2p-raft) | [](https://codecov.io/gh/libp2p/go-libp2p-raft) | consensus implementation over raft |
| **Pubsub** |
| [`go-libp2p-pubsub`](//github.com/libp2p/go-libp2p-pubsub) | [](https://travis-ci.com/libp2p/go-libp2p-pubsub) | [](https://codecov.io/gh/libp2p/go-libp2p-pubsub) | multiple pubsub over libp2p implementations |
| **RPC** |
| [`go-libp2p-gorpc`](//github.com/libp2p/go-libp2p-gorpc) | [](https://travis-ci.com/libp2p/go-libp2p-gorpc) | [](https://codecov.io/gh/libp2p/go-libp2p-gorpc) | a simple RPC library for libp2p |
| **Metrics** |
| [`go-libp2p-metrics`](//github.com/libp2p/go-libp2p-metrics) | [](https://travis-ci.com/libp2p/go-libp2p-metrics) | [](https://codecov.io/gh/libp2p/go-libp2p-metrics) | libp2p metrics interfaces/collectors |
| **Data Types** |
| [`go-libp2p-peer`](//github.com/libp2p/go-libp2p-peer) | [](https://travis-ci.com/libp2p/go-libp2p-peer) | [](https://codecov.io/gh/libp2p/go-libp2p-peer) | libp2p peer-ID datatype |
| [`go-libp2p-crypto`](//github.com/libp2p/go-libp2p-crypto) | [](https://travis-ci.com/libp2p/go-libp2p-crypto) | [](https://codecov.io/gh/libp2p/go-libp2p-crypto) | libp2p key types |
| [`go-libp2p-protocol`](//github.com/libp2p/go-libp2p-protocol) | [](https://travis-ci.com/libp2p/go-libp2p-protocol) | [](https://codecov.io/gh/libp2p/go-libp2p-protocol) | libp2p protocol datatype |
| [`go-libp2p-kbucket`](//github.com/libp2p/go-libp2p-kbucket) | [](https://travis-ci.com/libp2p/go-libp2p-kbucket) | [](https://codecov.io/gh/libp2p/go-libp2p-kbucket) | Kademlia routing table helper types |
| **Utilities/miscellaneous** |
| [`go-libp2p-loggables`](//github.com/libp2p/go-libp2p-loggables) | [](https://travis-ci.com/libp2p/go-libp2p-loggables) | [](https://codecov.io/gh/libp2p/go-libp2p-loggables) | logging helpers |
| [`go-maddr-filter`](//github.com/libp2p/go-maddr-filter) | [](https://travis-ci.com/libp2p/go-maddr-filter) | [](https://codecov.io/gh/libp2p/go-maddr-filter) | multiaddr filtering helpers |
| [`go-libp2p-netutil`](//github.com/libp2p/go-libp2p-netutil) | [](https://travis-ci.com/libp2p/go-libp2p-netutil) | [](https://codecov.io/gh/libp2p/go-libp2p-netutil) | misc utilities |
| [`go-msgio`](//github.com/libp2p/go-msgio) | [](https://travis-ci.com/libp2p/go-msgio) | [](https://codecov.io/gh/libp2p/go-msgio) | length prefixed data channel |
| [`go-addr-util`](//github.com/libp2p/go-addr-util) | [](https://travis-ci.com/libp2p/go-addr-util) | [](https://codecov.io/gh/libp2p/go-addr-util) | address utilities for libp2p swarm |
| [`go-buffer-pool`](//github.com/libp2p/go-buffer-pool) | [](https://travis-ci.com/libp2p/go-buffer-pool) | [](https://codecov.io/gh/libp2p/go-buffer-pool) | a variable size buffer pool for go |
| [`go-libp2p-routing-helpers`](//github.com/libp2p/go-libp2p-routing-helpers) | [](https://travis-ci.com/libp2p/go-libp2p-routing-helpers) | [](https://codecov.io/gh/libp2p/go-libp2p-routing-helpers) | routing helpers |
| [`go-reuseport`](//github.com/libp2p/go-reuseport) | [](https://travis-ci.com/libp2p/go-reuseport) | [](https://codecov.io/gh/libp2p/go-reuseport) | enables reuse of addresses |
| [`go-sockaddr`](//github.com/libp2p/go-sockaddr) | [](https://travis-ci.com/libp2p/go-sockaddr) | [](https://codecov.io/gh/libp2p/go-sockaddr) | utils for sockaddr conversions |
| [`go-flow-metrics`](//github.com/libp2p/go-flow-metrics) | [](https://travis-ci.com/libp2p/go-flow-metrics) | [](https://codecov.io/gh/libp2p/go-flow-metrics) | metrics library |
| **Testing and examples** |
| [`go-testutil`](//github.com/libp2p/go-testutil) | [](https://travis-ci.com/libp2p/go-testutil) | [](https://codecov.io/gh/libp2p/go-testutil) | a collection of testing utilities for ipfs and libp2p |
| [`go-libp2p-examples`](//github.com/libp2p/go-libp2p-examples) | [](https://travis-ci.com/libp2p/go-libp2p-examples) | [](https://codecov.io/gh/libp2p/go-libp2p-examples) | go-libp2p examples and tutorials |
| [`go-libp2p-circuit-progs`](//github.com/libp2p/go-libp2p-circuit-progs) | [](https://travis-ci.com/libp2p/go-libp2p-circuit-progs) | [](https://codecov.io/gh/libp2p/go-libp2p-circuit-progs) | testing programs for go-libp2p-circuit |
# Contribute
go-libp2p is part of [The IPFS Project](https://github.com/ipfs/ipfs), and is MIT licensed open source software. We welcome contributions big and small! Take a look at the [community contributing notes](https://github.com/ipfs/community/blob/master/CONTRIBUTING.md). Please make sure to check the [issues](https://github.com/ipfs/go-libp2p/issues). Search the closed ones before reporting things, and help us with the open ones.
Guidelines:
- read the [libp2p spec](https://github.com/libp2p/specs)
- please make branches + pull-request, even if working on the main repository
- ask questions or talk about things in [Issues](https://github.com/libp2p/go-libp2p/issues), our [discussion forums](https://discuss.libp2p.io), or #libp2p or #ipfs on freenode.
- ensure you are able to contribute (no legal issues please-- we use the DCO)
- run `go fmt` before pushing any code
- run `golint` and `go vet` too -- some things (like protobuf files) are expected to fail.
- get in touch with @jbenet and @diasdavid about how best to contribute
- have fun!
There's a few things you can do right now to help out:
- Go through the modules below and **check out existing issues**. This would be especially useful for modules in active development. Some knowledge of IPFS/libp2p may be required, as well as the infrasture behind it - for instance, you may need to read up on p2p and more complex operations like muxing to be able to help technically.
- **Perform code reviews**.
- **Add tests**. There can never be enough tests.