Use the request module for fetching screenshots. Makes it easier to use https if necessary.

lib/units/storage/plugins/image/task/get.js

@@ -1,18 +1,21 @@
 var util = require('util')
-var http = require('http')
+var stream = require('stream')
 var url = require('url')
 
 var Promise = require('bluebird')
+var request = require('request')
 
 module.exports = function(path, options) {
   return new Promise(function(resolve, reject) {
-    http.get(url.resolve(options.storageUrl, path))
-      .on('response', function(res) {
+    var res = request.get(url.resolve(options.storageUrl, path))
+      , ret = new stream.Readable().wrap(res) // Wrap old-style stream
+
+    res.on('response', function(res) {
         if (res.statusCode !== 200) {
           reject(new Error(util.format('HTTP %d', res.statusCode)))
         }
         else {
-          resolve(res)
+          resolve(ret)
         }
       })
       .on('error', reject)