title: CORS request not working in Safari
body: <p>I am making a CORS xhr request.  This works fine in chrome, however when I run in safari I get an 'Can not load ----  access not allowed by Access-control-allow-origin'.  The code is exactly the same and I have set the CORS on the server.  Below is my code.(has access control, but you are free to try without the accessToken)</p>
  
  <pre><code> var water;
   var req = new XMLHttpRequest;
   req.overrideMimeType("application/json");
   req.open('GET', 'https://storage.googleapis.com/fflog/135172watersupplies_json', true);
   req.setRequestHeader('Authorization', 'Bearer ' + accessToken);
   origThis = this;
   var target = this;
   req.onload = function() {
   water = req;
  
   req.send(null);
  </code></pre>
  
  <p>After looking at the request headers I see that a OPTIONS request is made first and this is the request that is not allowed.  The origin header is not included in the response in Safari, but is in chrome.  What would cause this. Any help would be greatly appreciated.</p>
  
  <p>UPDATE:
  I have tried in Safari for Windows and it works, so I'm not sure what is going on here.  The mac that I am using is a remote access (Macincloud.com), but I don't think that would have anything to do with it.</p>