XHR 307 Redirect Behind Proxy

[rjreed]

When I navigate to http://www.metacademy.org/list instead of http://metacademy.org/list behind a corporate proxy: Z-Scaler, the concept list does not display and the console logs the following error:

XMLHttpRequest cannot load http://metacademy.org/api/list. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://www.metacademy.org' is therefore not allowed access.

Here is the log information for that request:

Request Info

---

Request URL: http://metacademy.org/api/list
Request Method: GET
Status Code: 307 Temporary Redirect

Request Headers

---

Host: metacademy.org
Proxy-Connection: keep-alive
Cache-Control: max-age=0
Accept: application/json, text/javascript, /; q=0.01
Origin: http://www.metacademy.org
User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.117 Safari/537.36
Referer: http://www.metacademy.org/list
Accept-Encoding: gzip,deflate,sdch
Accept-Language: en-US,en;q=0.8

Response Headers

---

Content-Length: 0
Location: https://gateway.zscaler.net:443/auD?origurl=http%3A%2F%2Fmetacademy%2eorg%2fapi%2flist
Cache-Control: no-store,no-cache
Pragma: no-cache
Content-Type: text/html
P3P: CP="NOI ADM DEV PSAi COM NAV OUR OTR STP IND DEM"
Set-Cookie: _sm_au_d=1;path=/;domain=metacademy.org

---

Browser: Chrome 33.0.1750.117 m
OS: Windows 7 Enterprise SP1