info.txt

nodejs: 6.10.1
npm: 3.10.10
macos: 10.12.5

one.js

var net = require('net')

var hyperdrive = require('hyperdrive')
var archive = hyperdrive('./my-first-hyperdrive') // content will be stored in this folder

archive.writeFile('/hello2.txt', 'world2', function (err) {
  if (err) throw err
  archive.readdir('/', function (err, list) {
    if (err) throw err
    console.log(list) // prints ['hello.txt']
    archive.readFile('/hello.txt', 'utf-8', function (err, data) {
      if (err) throw err
      console.log(data) // prints 'world'
    })
  })
});

// replicate
archive.on('ready', function()
{
  console.log('ARCHIVE:', archive.key.toString('hex'));
  console.log('DISCOVERY:', archive.discoveryKey.toString('hex'));

  var server = net.createServer(function (socket) {
    socket.pipe(archive.replicate()).pipe(socket)
  })

  server.listen(10000)
});

output_one.txt

$ node one.js 
ARCHIVE: bb9fcd5a9f629f83ec32b3a38a2ecda055c505956ceaf1e706aa0f7e8e713587
DISCOVERY: e5f9eb85f158c1ffa7daeec133b8df1f3563bfbe42644bbc188702eaeb071512
[ 'hello.txt', 'hello2.txt' ]
world
events.js:160
      throw er; // Unhandled 'error' event
      ^

Error: First shared hypercore must be the same
    at Protocol._sameKey (/Users/alex/Projects/hyperdrive/node_modules/hypercore-protocol/index.js:404:16)
    at Protocol._onopen (/Users/alex/Projects/hyperdrive/node_modules/hypercore-protocol/index.js:272:15)
    at Protocol._onmessage (/Users/alex/Projects/hyperdrive/node_modules/hypercore-protocol/index.js:311:17)
    at Protocol._parseMessage (/Users/alex/Projects/hyperdrive/node_modules/hypercore-protocol/index.js:365:10)
    at Protocol._parse (/Users/alex/Projects/hyperdrive/node_modules/hypercore-protocol/index.js:330:37)
    at Protocol._write (/Users/alex/Projects/hyperdrive/node_modules/hypercore-protocol/index.js:238:8)
    at doWrite (/Users/alex/Projects/hyperdrive/node_modules/readable-stream/lib/_stream_writable.js:406:64)
    at writeOrBuffer (/Users/alex/Projects/hyperdrive/node_modules/readable-stream/lib/_stream_writable.js:395:5)
    at Protocol.Writable.write (/Users/alex/Projects/hyperdrive/node_modules/readable-stream/lib/_stream_writable.js:322:11)
    at Socket.ondata (_stream_readable.js:555:20)

output_two.txt

$ node two.js 
[]
events.js:160
      throw er; // Unhandled 'error' event
      ^

Error: First shared hypercore must be the same
    at Protocol._sameKey (/Users/alex/Projects/hyperdrive/node_modules/hypercore-protocol/index.js:404:16)
    at Protocol._onopen (/Users/alex/Projects/hyperdrive/node_modules/hypercore-protocol/index.js:272:15)
    at Protocol._onmessage (/Users/alex/Projects/hyperdrive/node_modules/hypercore-protocol/index.js:311:17)
    at Protocol._parseMessage (/Users/alex/Projects/hyperdrive/node_modules/hypercore-protocol/index.js:365:10)
    at Protocol._parse (/Users/alex/Projects/hyperdrive/node_modules/hypercore-protocol/index.js:330:37)
    at Protocol._write (/Users/alex/Projects/hyperdrive/node_modules/hypercore-protocol/index.js:238:8)
    at doWrite (/Users/alex/Projects/hyperdrive/node_modules/readable-stream/lib/_stream_writable.js:406:64)
    at writeOrBuffer (/Users/alex/Projects/hyperdrive/node_modules/readable-stream/lib/_stream_writable.js:395:5)
    at Protocol.Writable.write (/Users/alex/Projects/hyperdrive/node_modules/readable-stream/lib/_stream_writable.js:322:11)
    at Socket.ondata (_stream_readable.js:555:20)

two.js

var hyperdrive = require('hyperdrive')
var net = require('net')

// discovery key from the previous script
var key = new Buffer('e5f9eb85f158c1ffa7daeec133b8df1f3563bfbe42644bbc188702eaeb071512', 'utf8');
var clonedArchive = hyperdrive('./my-cloned-hyperdrive-2', key)
var socket = net.connect(10000)

socket.pipe(clonedArchive.replicate()).pipe(socket)

clonedArchive.readdir('/', function (err, list) {
  if (err) throw err
  console.log(list) // prints ['hello.txt']
  clonedArchive.readFile('/hello2.txt', 'utf-8', function (err, data) {
    if (err) throw err
    console.log(data) // prints 'world'
  })
})