GAE code proxy

解決 用 iFrame 內嵌 google app script 時，refuse display的問題

Refused to display 'https://script.googleusercontent.com/macros/echo?user_content_.....' in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'.

Solution:
在 GAE 上架設code proxy, 透過 GAE  server 去 access Google Script


1. 安裝 physon 2.7.8 (不要用2.7.9)
https://www.python.org/downloads/


2. 安裝 Google App Engine SDK for Python
https://cloud.google.com

 I used this proxy https://code.google.com/p/bs2grproxy/
  and made a few minor changes to it.

1) Use GAE. To setup a GAE account and learn how to upload, see:
http://www.labnol.org/internet/setup-proxy-server/12890/

2) Download the bs2grproxy code etc from https://code.google.com/p/bs2grproxy/

3) Use the attached bs2grproxy.py file 
  OR ...
In file bs2grproxy.py below line 48, "raise Exception('Unsupported ..." insert: 

            scm = 'https'
 
4) Use the attached bs2grproxy.py file 
  OR ...
  In file bs2grproxy.py below line 134, "raise Exception('Requested ..." insert: 

                if fetched:
                    if resp.headers.get('Content-Type', '').find('html') >= 0:
                        resp.content = resp.content + ''
                        resp.headers['x-frame-options'] = 'IGNORE'
                        logging.info("warning-panel hidden and x-frame-options reset")


5) Update the file: app.yaml 
 lines:
  application: you-app-name 
  script: bs2grproxy.py

6) Upload to the server
7) Set the host.
  i.e. on your new proxy goto www.mydomain.com/_bs2admin/
 and set the host to: docs.google.com


with luck .. the proxy now works 

Workaround, posted May 16th. Time out issue. 

Change the proxy time out in bs2grproxy.py, like this:

resp = urlfetch.fetch(new_path, self.request.body, method, newHeaders, False, False, 30)

Slow GAS code needs a longer time out than the default. But dont go over 1 min, as you hit the GAE time out.