2017-07-20 19:42:32 -07:00

69 lines
1.6 KiB
JavaScript

'use strict'
const libp2p = require('libp2p')
const TCP = require('libp2p-tcp')
const Multiplex = require('libp2p-multiplex')
const SECIO = require('libp2p-secio')
const PeerInfo = require('peer-info')
const MulticastDNS = require('libp2p-mdns')
const FloodSub = require('libp2p-floodsub')
const waterfall = require('async/waterfall')
const parallel = require('async/parallel')
const series = require('async/series')
class MyBundle extends libp2p {
constructor (peerInfo) {
const modules = {
transport: [new TCP()],
connection: {
muxer: [Multiplex],
crypto: [SECIO]
},
discovery: [new MulticastDNS(peerInfo, { interval: 2000 })]
}
super(modules, peerInfo)
}
}
function createNode (callback) {
let node
waterfall([
(cb) => PeerInfo.create(cb),
(peerInfo, cb) => {
peerInfo.multiaddrs.add('/ip4/0.0.0.0/tcp/0')
node = new MyBundle(peerInfo)
node.start(cb)
}
], (err) => callback(err, node))
}
parallel([
(cb) => createNode(cb),
(cb) => createNode(cb)
], (err, nodes) => {
if (err) { throw err }
const node1 = nodes[0]
const node2 = nodes[1]
const fs1 = new FloodSub(node1)
const fs2 = new FloodSub(node2)
series([
(cb) => fs1.start(cb),
(cb) => fs2.start(cb),
(cb) => node1.once('peer:discovery', (peer) => node1.dial(peer, cb)),
(cb) => setTimeout(cb, 500)
], (err) => {
if (err) { throw err }
fs2.on('news', (msg) => console.log(msg.from, msg.data.toString()))
fs2.subscribe('news')
setInterval(() => {
fs1.publish('news', Buffer.from('Bird bird bird, bird is the word!'))
}, 1000)
})
})