old_contents: var path = require('path')
  var fs = require('fs')
  var get = require('simple-get')
  var test = require('tape')
  var WebTorrent = require('../')
  
  var leavesPath = path.resolve(__dirname, 'content', 'Leaves of Grass by Walt Whitman.epub')
  var leavesTorrent = fs.readFileSync(path.resolve(__dirname, 'torrents', 'leaves.torrent'))
  
  test('start http server programmatically', function (t) {
    t.plan(4)
  
    var client = new WebTorrent({ tracker: false, dht: false })
  
    client.on('error', function (err) { t.fail(err) })
    client.on('warning', function (err) { t.fail(err) })
  
    var torrent = client.add(leavesTorrent, { dht: false, tracker: false }, function (torrent) {
      t.pass('got "torrent" event')
  
      var server = torrent.createServer()
      server.listen(0, function () {
        t.pass('server is listening')
        var port = server.address().port
        get.concat('http://localhost:' + port + '/0', function (err, data) {
          if (err) throw err
          // Verify data for first (and only file)
          t.deepEqual(data, fs.readFileSync(leavesPath))
  
          server.close()
          client.destroy()
        })
      })
    })
    torrent.on('ready', function () {
      torrent.load(fs.createReadStream(leavesPath), function (err) {
        if (err) throw err
        t.pass('loaded seed content into torrent')
      })
    })
  })
  
new_contents: var fs = require('fs')
  var get = require('simple-get')
  var path = require('path')
  var test = require('tape')
  var WebTorrent = require('../')
  
  var leavesPath = path.resolve(__dirname, 'content', 'Leaves of Grass by Walt Whitman.epub')
  var leavesTorrent = fs.readFileSync(path.resolve(__dirname, 'torrents', 'leaves.torrent'))
  
  test('torrent.createServer(): programmatic http server', function (t) {
    t.plan(9)
  
    var client = new WebTorrent({ tracker: false, dht: false })
    client.on('error', function (err) { t.fail(err) })
    client.on('warning', function (err) { t.fail(err) })
  
    client.add(leavesTorrent, function (torrent) {
      t.pass('got "torrent" event')
      var server = torrent.createServer()
  
      server.listen(0, function () {
        var port = server.address().port
        t.pass('server is listening on ' + port)
  
        // Seeding after server is created should work
        torrent.load(fs.createReadStream(leavesPath), function (err) {
          t.error(err, 'loaded seed content into torrent')
        })
  
        var host = 'http://localhost:' + port
  
        // Index page should list files in the torrent
        get.concat(host + '/', function (err, data) {
          t.error(err)
          data = data.toString()
          t.ok(data.indexOf('Leaves of Grass by Walt Whitman.epub') !== -1)
  
          // Verify file content for first (and only) file
          get.concat(host + '/0', function (err, data) {
            t.error(err)
            t.deepEqual(data, fs.readFileSync(leavesPath))
  
            server.close(function () { t.pass('server closed') })
            client.destroy(function () { t.pass('client destroyed') })
          })
        })
      })
    })
  })
  
subject: improve torrent.createServer() test