zectbynmo/hyperdrive-archive-swarm

Join the p2p swarm for a given hyperdrive archive.

hyperdrive-archive-swarm

Join a hyperdrive archive's & hypercore feed's p2p swarm in the client and server.

npm install hyperdrive-archive-swarm

Usage

Run the following code in two different places and they will replicate the contents of the given ARCHIVE_KEY.

var hyperdrive = require('hyperdrive')
var memdb = require('memdb')
var swarm = require('hyperdrive-archive-swarm')

var drive = hyperdrive(memdb())
var archive = drive.createArchive('ARCHIVE_KEY')

var sw = swarm(archive)
sw.on('connection', function (peer, type) {
  console.log('got', peer, type) // type is 'webrtc-swarm' or 'discovery-swarm'
  console.log('connected to', sw.connections, 'peers')
  peer.on('close', function () {
    console.log('peer disconnected')
  }) 
})

Will use discovery-swarm, and webrtc-swarm whenever available to attempt to connect peers. Uses datland-swarm-defaults for peer introduction defaults on the server side, which can be overwritten (see below).

The module can also create and join a swarm for a hypercore feed:

var hypercore = require('hypercore')
var memdb = require('memdb')
var swarm = require('hyperdrive-archive-swarm')

var core = hypercore(memdb())
var feed = core.createFeed()
var sw = swarm(feed)

API

var sw = swarm(archive, opts)

Join the p2p swarm for the given hyperdrive archive. The return object, sw, is an event emitter that will emit a peer event with the peer information when a peer is found.

Get number of currently active connections with sw.connections.

Options

• signalhub: the url of the signalhub.
• signalhubPrefix: the prefix for the archive's signalhub key
• wrtc: a webrtc instance, e.g. electron-webrtc, if not natively supported
• upload: bool, upload data to the other peer?
• download: bool, download data from the other peer?
• port: port for discovery swarm
• utp: use utp in discovery swarm
• tcp: use tcp in discovery swarm

Defaults from datland-swarm-defaults can also be overwritten:

• dns.server: DNS server
• dns.domain: DNS domain
• dht.bootstrap: distributed hash table bootstrapping nodes