Merge pull request #450 from bertrandom/master

Fixes a bug where args were being overridden by previous requests when using requestOptionsTransport

lib/clients/transports/request.js

@@ -6,6 +6,7 @@ var HttpsProxyAgent = require('https-proxy-agent');
 var has = require('lodash').has;
 var partial = require('lodash').partial;
 var defaults = require('lodash').defaults;
+var cloneDeep = require('lodash').cloneDeep;
 var request = require('request');
 
 var handleRequestTranportRes = function handleRequestTranportRes(cb, err, response, body) {
@@ -64,7 +65,8 @@ var proxiedRequestTransport = function proxiedRequestTransport(proxyURL) {
 
 var requestOptionsTransport = function requestOptionsTransport(options) {
   return function _requestOptionsTransport(args, cb) {
-    var requestArgs = defaults(options, getRequestTransportArgs(args));
+    var instanceOptions = cloneDeep(options);
+    var requestArgs = defaults(instanceOptions, getRequestTransportArgs(args));
     request.post(requestArgs, partial(handleRequestTranportRes, cb));
   };
 };