libp2p routing setup

libp2p-routing-setup.js

const Libp2p = require('libp2p')
const KadDht = require('libp2p-kad-dht')
const DelegatedContentRouter = require('libp2p-delegated-content-routing')
const DelegatedPeerRouter = require('libp2p-delegated-peer-routing')
const ipfsHttpClient = require('ipfs-http-client')
const PeerId = require('peer-id')
const CID = require('cids')

const peerId = await PeerId.create()
const delegateContentRouter = new DelegatedContentRouter(peerId, ipfsHttpClient({
 protocol: 'https',
 port: 443,
 host: 'node0.delegate.ipfs.io'
}))

const delegatePeerRouter = new DelegatedPeerRouter(ipfsHttpClient({
 protocol: 'https',
 port: 443,
 host: 'node0.delegate.ipfs.io'
}))

const node = await Libp2p.create({
  peerId,
  // …
  modules: {
    // … other required modules
    dht: KadDht,
    contentRouting: [delegateContentRouter],
    peerRouting: [delegatePeerRouter]
  }
})

await node.start()

// Content Routing
const cid = new CID('QmS4ustL54uo8FzR9455qaxZwuMiUhyvMcX9Ba8nUH4uVv')

await node.provide(cid)
console.log('providing %s', cid.toBaseEncodedString())

for await (const { id, multiaddrs } of node.findProviders(cid)) {
  console.log('found peer', id, multiaddrs)
}

// Peer Routing
try {
  const { id, multiaddrs } = await node.findPeer('peerid')
  console.log('found peer details', id, multiaddrs)
} catch (err) {
  console.error(err)
}