From f410f2b17129deeb8d2af166948885fe90029f91 Mon Sep 17 00:00:00 2001
From: AJ ONeal <coolaj86@gmail.com>
Date: Fri, 8 Dec 2017 21:32:17 +0000
Subject: [PATCH] set Accept header and reply with headers

---
 oauth3.core.js | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/oauth3.core.js b/oauth3.core.js
index 89b7fc9..e210c0a 100644
--- a/oauth3.core.js
+++ b/oauth3.core.js
@@ -1016,6 +1016,10 @@
           var headers = preq.headers || {};
           var multipart;
 
+          if (!headers.Accept && !headers.accept) {
+            headers.Accept = 'application/json';
+          }
+
           try {
             xhr = new XMLHttpRequest(_sys);
           } catch(e) {
@@ -1027,7 +1031,7 @@
               return;
             }
 
-            var data, err;
+            var data, err, resp;
             if (xhr.status !== 200) {
               err = new Error('bad status code: ' + xhr.status);
             }
@@ -1050,12 +1054,19 @@
               return;
             }
 
-            resolve({
+            resp = {
               _request: xhr
-            , headers: null // TODO
+            , headers: {}
             , data: data
             , status: xhr.status
+            };
+            (xhr.getAllResponseHeaders()||'').trim().split(/[\n\r]+/).forEach(function (line) {
+              var parts = line.split(': ');
+              var header = parts.shift();
+              var value = parts.join(': ');
+              resp.headers[header] = value;
             });
+            resolve(resp);
           };
           xhr.ontimeout = function () {
             var err = new Error('ETIMEDOUT');