Add binary txt option

lib/browser.js

@@ -4,7 +4,7 @@ var util = require('util')
 var EventEmitter = require('events').EventEmitter
 var serviceName = require('multicast-dns-service-types')
 var dnsEqual = require('dns-equal')
-var txt = require('dns-txt')()
+var dnsTxt = require('dns-txt')
 
 var TLD = '.local'
 var WILDCARD = '_services._dns-sd._udp' + TLD
@@ -35,14 +35,21 @@ function Browser (mdns, opts, onup) {
  this._mdns = mdns
  this._onresponse = null
  this._serviceMap = {}
+ this._txt = null
 
  if (!opts || !opts.type) {
  this._name = WILDCARD
  this._wildcard = true
+ this._txt = dnsTxt()
  } else {
  this._name = serviceName.stringify(opts.type, opts.protocol || 'tcp') + TLD
  if (opts.name) this._name = opts.name + '.' + this._name
  this._wildcard = false
+ if (!opts.txt || !opts.txt.binary) {
+ this._txt = dnsTxt()
+ } else {
+ this._txt = dnsTxt({ binary: true })
+ }
  }
 
  this.services = []
@@ -75,7 +82,7 @@ Browser.prototype.start = function () {
  Object.keys(nameMap).forEach(function (name) {
  goodbyes(name, packet).forEach(self._removeService.bind(self))
 
- var matches = buildServicesFor(name, packet)
+ var matches = buildServicesFor(name, packet, self._txt)
  if (matches.length === 0) return
 
  matches.forEach(function (service) {
@@ -127,7 +134,7 @@ function goodbyes (name, packet) {
  })
 }
 
-function buildServicesFor (name, packet) {
+function buildServicesFor (name, packet, txt) {
  var records = packet.answers.concat(packet.additionals).filter(function (rr) {
  return rr.ttl > 0 // ignore goodbye messages
  })