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POHow do you access an authenticated Google App Engine service from a (non-web) python client?
 

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  1. POHow do you access an authenticated Google App Engine service from a (non-web) python client?
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    <p>I have a Google App Engine app - <a href="http://mylovelyapp.appspot.com/" rel="noreferrer">http://mylovelyapp.appspot.com/</a> It has a page - mylovelypage</p> <p>For the moment, the page just does <code>self.response.out.write('OK')</code></p> <p>If I run the following Python at my computer:</p> <pre><code>import urllib2 f = urllib2.urlopen("http://mylovelyapp.appspot.com/mylovelypage") s = f.read() print s f.close() </code></pre> <p>it prints "OK"</p> <p>the problem is if I add <code>login:required</code> to this page in the app's yaml</p> <p>then this prints out the HTML of the Google Accounts login page</p> <p>I've tried "normal" authentication approaches. e.g.</p> <pre><code>passman = urllib2.HTTPPasswordMgrWithDefaultRealm() auth_handler = urllib2.HTTPBasicAuthHandler() auth_handler.add_password(None, uri='http://mylovelyapp.appspot.com/mylovelypage', user='billy.bob@gmail.com', passwd='billybobspasswd') opener = urllib2.build_opener(auth_handler) urllib2.install_opener(opener) </code></pre> <p>But it makes no difference - I still get the login page's HTML back.</p> <p>I've tried <a href="http://code.google.com/apis/accounts/docs/AuthForInstalledApps.html" rel="noreferrer">Google's ClientLogin auth API</a>, but I can't get it to work.</p> <pre><code>h = httplib2.Http() auth_uri = 'https://www.google.com/accounts/ClientLogin' headers = {'Content-Type': 'application/x-www-form-urlencoded'} myrequest = "Email=%s&amp;Passwd=%s&amp;service=ah&amp;source=DALELANE-0.0" % ("billy.bob@gmail.com", "billybobspassword") response, content = h.request(auth_uri, 'POST', body=myrequest, headers=headers) if response['status'] == '200': authtok = re.search('Auth=(\S*)', content).group(1) headers = {} headers['Authorization'] = 'GoogleLogin auth=%s' % authtok.strip() headers['Content-Length'] = '0' response, content = h.request("http://mylovelyapp.appspot.com/mylovelypage", 'POST', body="", headers=headers) while response['status'] == "302": response, content = h.request(response['location'], 'POST', body="", headers=headers) print content </code></pre> <p>I do seem to be able to get some token correctly, but attempts to use it in the header when I call 'mylovelypage' still just return me the login page's HTML. :-( </p> <p>Can anyone help, please?</p> <p>Could I use the <a href="http://code.google.com/p/gdata-python-client/" rel="noreferrer">GData client library</a> to do this sort of thing? From what I've read, I think it should be able to access App Engine apps, but I haven't been any more successful at getting the authentication working for App Engine stuff there either </p> <p>Any pointers to samples, articles, or even just keywords I should be searching for to get me started, would be very much appreciated.</p> <p>Thanks!</p>
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