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Published: Jan 20, 2018 License: MIT Imports: 17 Imported by: 0


libp2p hex logo

The Go implementation of the libp2p Networking Stack.

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libp2p is a networking stack and library modularized out of The IPFS Project, 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


There is currently only one bundle of go-libp2p, this package. This bundle is used by go-ipfs.


go-libp2p repo is a place holder for the list of Go modules that compose Go libp2p, as well as its entry point.

> go get -d
> cd $GOPATH/src/
> make
> make deps



Examples can be found on the examples folder.



While developing, you need to use gx to install and link your dependencies, to do that, run:

> make deps

Before commiting and pushing to Github, make sure to rewind the gx'ify of dependencies. You can do that with:

> make publish

Running of individual tests is done through gx test <path to test>

$ cd $GOPATH/src/
$ make deps
$ gx test ./p2p/<path of module you want to run tests for>


List of packages currently in existence for libp2p:

Package Version CI
Connection Upgrades
Stream Muxers
Crypto Channels
Peer Routing
Content Routing
Data Types


go-libp2p is part of The IPFS Project, and is MIT licensed open source software. We welcome contributions big and small! Take a look at the community contributing notes. Please make sure to check the issues. Search the closed ones before reporting things, and help us with the open ones.


  • read the libp2p spec
  • please make branches + pull-request, even if working on the main repository
  • ask questions or talk about things in Issues 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.

Modularizing go-libp2p

We have currently a work in progress of modularizing go-libp2p from a repo monolith to several packages in different repos that can be reused for other projects of swapped for custom libp2p builds.

We want to maintain history, so we'll use git-subtree for extracting packages. Find instructions below:

# 1) create the extracted tree (has the directory specified as -P as its root)
> cd go-libp2p/
> git subtree split -P p2p/crypto/secio/ -b libp2p-secio
# important to delete the tree now, so that outdated imports fail in step 5
> git rm -r p2p/crypto/secio/
> git commit
> cd ../

# 2) make the new repo
> mkdir go-libp2p-secio
> cd go-libp2p-secio/
> git init && git commit --allow-empty

# 3) fetch the extracted tree from the previous repo
> git remote add libp2p ../go-libp2p
> git fetch libp2p
> git reset --hard libp2p/libp2p-secio

# 4) update self import paths
> sed -someflagsidontknow 'go-libp2p/p2p/crypto/secio' 'golibp2p-secio'
> git commit

# 5) create package.json and check all imports are correct
> vim package.json
> gx --verbose install --global
> gx-go rewrite
> go test ./...
> gx-go rewrite --undo
> git commit

# 4) make the package ready
> git commit

# 5) bump the version separately
> vim package.json
> gx publish
> git add package.json .gx/
> git commit -m 'Publish 1.2.3'

# 6) clean up and push
> git remote rm libp2p
> git push origin master




View Source
const (
	EncPlaintext = transportEncOpt(0)
	EncSecio     = transportEncOpt(1)


This section is empty.


func DefaultMuxer

func DefaultMuxer() mux.Transport

func Defaults

func Defaults(cfg *Config) error

func New

func New(ctx context.Context, opts ...Option) (host.Host, error)


type Config

type Config struct {
	Transports   []transport.Transport
	Muxer        mux.Transport
	ListenAddrs  []ma.Multiaddr
	PeerKey      crypto.PrivKey
	Peerstore    pstore.Peerstore
	Protector    pnet.Protector
	Reporter     metrics.Reporter
	DisableSecio bool

Config describes a set of settings for a libp2p node

type Option

type Option func(cfg *Config) error

func BandwidthReporter

func BandwidthReporter(rep metrics.Reporter) Option

func Identity

func Identity(sk crypto.PrivKey) Option

func ListenAddrStrings

func ListenAddrStrings(s ...string) Option

func ListenAddrs

func ListenAddrs(addrs Option

func Muxer

func Muxer(m mux.Transport) Option

func NoEncryption

func NoEncryption() Option

func Peerstore

func Peerstore(ps pstore.Peerstore) Option

func PrivateNetwork

func PrivateNetwork(prot pnet.Protector) Option

func TransportEncryption

func TransportEncryption(tenc ...transportEncOpt) Option

func Transports

func Transports(tpts ...transport.Transport) Option

Source Files


Path Synopsis
Package mocknet provides a mock net.Network to test with.
Package mocknet provides a mock net.Network to test with.
Package identify_pb is a generated protocol buffer package.
Package identify_pb is a generated protocol buffer package.
Package reconnect tests connect -> disconnect -> reconnect works
Package reconnect tests connect -> disconnect -> reconnect works

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