b1.js

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

var d1 = hyperdrive(memdb())
var a1 = d1.createArchive()
debug(swarm(a1))
console.log('a1', a1.key.toString('hex'))
var d2 = hyperdrive(memdb())
var a2 = d2.createArchive()
debug(swarm(a2))
console.log('a2', a2.key.toString('hex'))
var d3 = hyperdrive(memdb())
var a3 = d3.createArchive()
debug(swarm(a3))
console.log('a3', a3.key.toString('hex'))

function debug (sw) {
  sw.on('connection', () => {
    console.log('connected')
  })
}

b2.js

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

var d1 = hyperdrive(memdb())
var a1 = d1.createArchive('<A1 KEY>')
debug(swarm(a1), a1.key)
var d2 = hyperdrive(memdb())
var a2 = d2.createArchive('<A2 KEY>')
debug(swarm(a2), a2.key)
var d3 = hyperdrive(memdb())
var a3 = d3.createArchive('<A3 KEY>')
debug(swarm(a3), a3.key)
function debug (sw, key) {
  sw.on('connection', () => {
    console.log(key.toString('hex'), 'connected')
  })
}