Example code for https://github.com/hyperswarm/hyperswarm/issues/75

index.js

const Corestore = require('corestore')
const Networker = require('@corestore/networker')
const { mkdir } = require('fs/promises')

let index = 0
async function create () {
  index += 1
  const dir = `.tmp/${index}`
  await mkdir(dir, { recursive: true })
  const store = new Corestore(dir)
  await store.ready()
  const networker = new Networker(store)
  return { store, networker }
}

async function run () {
  console.log('> Creating stores')
  const { networker: networker1, store: store1 } = await create()
  const { networker: networker2, store: store2 } = await create()
  const core1a = store1.get()
  console.log('> Appending to first core')
  await append(core1a, 'a')
  const core2a = store2.get({ key: core1a.key })

  networker1.on('peer-add', (peer) => console.log('nw1-add', peer.remoteAddress))
  networker2.on('peer-add', (peer) => console.log('nw2-add', peer.remoteAddress))
  networker1.on('stream-closed', () => console.log('nw1-stream-closed'))
  networker2.on('stream-closed', () => console.log('nw2-stream-closed'))

  console.log('> Configuring first networker')
  await networker1.configure(core1a.discoveryKey)
  console.log('> Configuring second networker')
  await networker2.configure(core2a.discoveryKey)
  console.log('> Just for test: see if waiting a bit is relevant before closing')
  await new Promise(resolve => setTimeout(resolve, 100))
  console.log('> Closing networker 1')
  await networker1.close()
  console.log('> Closing networker 2')
  await networker2.close()
  console.log('> Closing store 1')
  await store1.close()
  console.log('> Closing store 2')
  await store2.close()
  console.log('> Done.')
}

const append = (core, data) => new Promise((resolve, reject) => {
  core.append(data, (err) => err ? reject(err) : resolve())
})

run().catch(error => {
  console.error(error.stack)
  process.exit(1)
})

package.json

{
  "main": "index.js",
  "dependencies": {
    "@corestore/networker": "1.1.0",
    "corestore": "5.8.2"
  }
}