Fix #1

index.js

@@ -2,7 +2,7 @@ var axios = require('axios')
 var randomAccess = require('random-access-storage')
 var logger = require('./lib/logger')
 var isNode = require('./lib/is-node')
-var validUrl = require('./lib/valid-url')
+var {validUrl, prependUrlProtocol} = require('./lib/url')
 
 var defaultOptions = {
  responseType: 'arraybuffer',
@@ -12,10 +12,15 @@ var defaultOptions = {
 }
 
 var randomAccessHttp = function (filename, options) {
- var url = options && options.url
+ if (!options) options = {}
+
+ var url = prependUrlProtocol(options.url)
+
+ if (!url) filename = prependUrlProtocol(filename)
  if (!filename || (!validUrl(filename) && !validUrl(url))) {
  throw new Error('Expect first argument to be a valid URL or a relative path, with url set in options')
  }
+
  var axiosConfig = Object.assign({}, defaultOptions)
  if (isNode) {
  var http = require('http')

lib/url.js

@@ -0,0 +1,22 @@
+var url = require('url')
+
+module.exports.validUrl = function (str) {
+ if (typeof str !== 'string') return false
+ var parsed = url.parse(str)
+ return ~['http:', 'https:'].indexOf(parsed.protocol)
+}
+
+module.exports.prependUrlProtocol = function (str) {
+ if (typeof str !== 'string') return false
+ var parsed = url.parse(str)
+
+ if (parsed.protocol === null) {
+ parsed.protocol = 'http:'
+ var parts = parsed.href.split('/')
+ parsed.slashes = true
+ parsed.hostname = parsed.host = parts[0]
+ parsed.pathname = parsed.path = parts.slice(1).join('/')
+ }
+
+ return url.format(parsed)
+}