Dat Download Basic

index.js

var Hyperdrive = require('hyperdrive')
var Level = require('level')
var Swarm = require('discovery-swarm')
var swarmDefaults = require('datland-swarm-defaults')

// run this like: node thisfile.js 4c325f7874b4070blahblahetc
var link = new Buffer(process.argv[2], 'hex')
var LOCAL_PORT = Number(process.argv[3]) || 3282 // specify port or use 3282

var db = Level('./dat.db')
var drive = Hyperdrive(db)
var config = swarmDefaults({
  // use the Dat default dns + discovery servers
  stream: function () {
    return drive.createPeerStream()
  }
})
var swarm = Swarm(config)

swarm.once('listening', function () {
  console.log('joining swarm: ', link)
  swarm.join(link)
  // start downloading to ./data
  var archive = drive.get(link, process.cwd() + '/data')
  archive.ready(function (err) {
    // a stream of all metadata. needs to download once then will cache
    var metadata = archive.createEntryStream()
    // start downloading all entries
    metadata.on('data', function (entry) {
      var dl = archive.download(entry)
      dl.on('end', function () {
        console.log('download finished', entry.name)
      })
    })
  })
})

swarm.listen(LOCAL_PORT)

package.json

{
  "name": "testdat",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "discovery-swarm": "^3.1.0",
    "hyperdrive": "^3.5.1",
    "level": "^1.4.0",
    "datland-swarm-default": "^1.0.1"
  }
}