2.6 KiB
go-libp2p-swarm
The libp2p swarm manages groups of connections to peers, and handles incoming and outgoing streams.
The libp2p swarm is the 'low level' interface for working with a given libp2p
network. It gives you more fine grained control over various aspects of the
system. Most applications don't need this level of access, so the Swarm is
generally wrapped in a Host abstraction that provides a more friendly
interface. See the host interface
for more info on that.
Table of Contents
Install
go get github.com/libp2p/go-libp2p-swarm
Usage
Creating a swarm
To construct a swarm, you'll be calling NewSwarm. That function looks like this:
swarm, err := NewSwarm(peerID, peerstore)
The first parameter of the swarm constructor is an identity in the form of a peer.ID.
The second argument is a peerstore. This is essentially a database that the swarm will use to store peer IDs, addresses, public keys, protocol preferences and more.
Streams
The swarm is designed around using multiplexed streams to communicate with other peers. When working with a swarm, you will want to set a function to handle incoming streams from your peers:
swrm.SetStreamHandler(func(s network.Stream) {
defer s.Close()
fmt.Println("Got a stream from: ", s.SwarmConn().RemotePeer())
fmt.Fprintln(s, "Hello Friend!")
})
Tip: Always make sure to close streams when you're done with them.
Contribute
PRs are welcome!
Small note: If editing the Readme, please conform to the standard-readme specification.
License
MIT © Jeromy Johnson
The last gx published version of this module was: 3.0.35: QmQVoMEL1CxrVusTSUdYsiJXVBnvSqNUpBsGybkwSfksEF