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    github.com/libp2p/go-libp2p


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libp2p hex logo

The Go implementation of the libp2p Networking Stack.



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Background

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

Bundles

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

Usage

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

Install

> go get -u -d github.com/libp2p/go-libp2p/...
> cd $GOPATH/src/github.com/libp2p/go-libp2p
> make
> make deps

API

GoDoc

Examples

Examples can be found in the examples repo.

Development

Dependencies

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

Tests

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

$ cd $GOPATH/src/github.com/libp2p/go-libp2p
$ make deps
$ gx test ./p2p/<path of module you want to run tests for>

Packages

This table is generated using the module package-table with package-table --data=package-list.json.

List of packages currently in existence for libp2p:

NameCI/TravisCI/JenkinsCoverageDescription
Libp2p
go-libp2pTravis CIjenkinscodecovgo-libp2p entry point
go-libp2p-hostTravis CIN/Acodecovlibp2p "host" interface
go-libp2p-blankhostTravis CIN/Acodecovminimal implementation of the "host" interface
Network
go-libp2p-netTravis CIN/Acodecovlibp2p connection and "network" interfaces
go-libp2p-swarmTravis CIjenkinscodecovreference implementation
Transport
go-libp2p-transportTravis CIN/Acodecovinterfaces
go-ws-transportTravis CIN/AcodecovWebSocket transport
go-tcp-transportTravis CIN/AcodecovTCP transport
go-libp2p-quic-transportTravis CIN/AcodecovQUIC transport
go-udp-transportTravis CIN/AcodecovUDP transport
go-utp-transportTravis CIN/AcodecovuTorrent transport (UTP)
go-libp2p-circuitTravis CIjenkinscodecovrelay transport
go-libp2p-transport-upgraderTravis CIN/Acodecovupgrades multiaddr-net connections into full libp2p transports
go-libp2p-reuseport-transportTravis CIN/Acodecovpartial transport for building transports that reuse ports
Encrypted Channels
go-conn-securityTravis CIN/Acodecovinterfaces
go-libp2p-secioTravis CIN/AcodecovSecIO crypto channel
go-conn-security-multistreamTravis CIN/Acodecovmultistream multiplexed meta crypto channel
Private Network
go-libp2p-interface-pnetTravis CIN/Acodecovinterfaces
go-libp2p-pnetTravis CIN/Acodecovreference implementation
Stream Muxers
go-stream-muxerTravis CIN/Acodecovinterfaces
go-smux-yamuxTravis CIN/AcodecovYAMUX stream multiplexer
go-smux-mplexTravis CIN/AcodecovMPLEX stream multiplexer
NAT Traversal
go-libp2p-natTravis CIN/Acodecov
go-libp2p-autonatTravis CIN/AcodecovNAT autodetection (client)
go-libp2p-autonat-svcTravis CIN/AcodecovNAT autodetection (service)
Peerstore
go-libp2p-peerstoreTravis CIN/Acodecovinterfaces and reference implementation
Connection Manager
go-libp2p-interface-connmgrTravis CIN/Acodecovinterface
go-libp2p-connmgrTravis CIN/Acodecovreference implementation
Routing
go-libp2p-routingTravis CIN/Acodecovrouting interfaces
go-libp2p-recordTravis CIN/Acodecovrecord type and validator logic
go-libp2p-routing-helpersTravis CIjenkinscodecovhelpers for composing routers
go-libp2p-kad-dhtTravis CIjenkinscodecovKademlia-like router
go-libp2p-pubsub-routerTravis CIjenkinscodecovrecord-store over pubsub adapter
Discovery
go-libp2p-discoveryTravis CIN/Acodecovactive peer disovery interface
Consensus
go-libp2p-consensusTravis CIN/Acodecovconsensus protocols interfaces
go-libp2p-raftTravis CIjenkinscodecovconsensus implementation over raft
Pubsub
go-libp2p-pubsubTravis CIjenkinscodecovmultiple pubsub over libp2p implementations
RPC
go-libp2p-gorpcTravis CIN/Acodecova simple RPC library for libp2p
Metrics
go-libp2p-metricsTravis CIN/Acodecovlibp2p metrics interfaces/collectors
Data Types
go-libp2p-peerTravis CIN/Acodecovlibp2p peer-ID datatype
go-libp2p-cryptoTravis CIN/Acodecovlibp2p key types
go-libp2p-protocolTravis CIN/Acodecovlibp2p protocol datatype
go-libp2p-kbucketTravis CIN/AcodecovKademlia routing table helper types
Utilities/miscellaneous
go-libp2p-loggablesTravis CIN/Acodecovlogging helpers
go-maddr-filterTravis CIN/Acodecovmultiaddr filtering helpers
go-libp2p-netutilTravis CIN/Acodecovmisc utilities
go-msgioTravis CIN/Acodecovlength prefixed data channel
go-addr-utilTravis CIN/Acodecovaddress utilities for libp2p swarm
go-buffer-poolTravis CIN/Acodecova variable size buffer pool for go
go-libp2p-loggablesTravis CIN/Acodecovlogging helpers
go-libp2p-routing-helpersTravis CIjenkinscodecovrouting helpers
go-maddr-filterTravis CIN/Acodecova library to perform filtering of multiaddrs.
go-reuseportTravis CIN/Acodecovenables reuse of addresses
go-sockaddrTravis CIN/Acodecovutils for sockaddr conversions
go-flow-metricsTravis CIN/Acodecovmetrics library
Testing and examples
go-testutilTravis CIN/Acodecova collection of testing utilities for ipfs and libp2p
go-libp2p-examplesTravis CIjenkinscodecovgo-libp2p examples and tutorials
go-libp2p-circuit-progsTravis CIN/Acodecovtesting programs for go-libp2p-circuit

Contribute

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.

Guidelines:

  • 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
62b0a5c21574bcbe06c422785cd5feff378ae5bd
# 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
> vim README.md LICENSE
> 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

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Last updated on 24 Oct 2018

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