title: Google App Engine - Your client does not have permission to get URL
body: <p>I developed an Android Application that interacts with Google App Engine. Google App Engine pushes certain messages to all users at certain intervals. It was working till Oct without any issues, all of a sudden I started seeing the below issues and I don't get any messages on my Android device from Google App engine. </p>
  
  <p>Any thoughts?</p>
  
  <pre><code>1970-01-17 00:42:54.497
  
  Request URL: https://gstockmarkets.appspot.com/_ah/api/deviceinfoendpoint/v1/deviceinfo
  Method: deviceinfoendpoint.insertDeviceInfo
  Error Code: 403
  Reason: forbidden
  Message: &lt;!DOCTYPE html&gt;&lt;html lang=en&gt;&lt;meta charset=utf-8&gt;&lt;meta name=viewport content="initial-scale=1, minimum-scale=1, width=device-width"&gt;&lt;title&gt;Error 403 (Forbidden)!!1&lt;/title&gt;&lt;style&gt;*{margin:0;padding:0}html,code{font:15px/22px arial,sans-serif}html{background:#fff;color:#222;padding:15px}body{margin:7% auto 0;max-width:390px;min-height:180px;padding:30px 0 15px}* &gt; body{background:url(//www.google.com/images/errors/robot.png) 100% 5px no-repeat;padding-right:205px}p{margin:11px 0 22px;overflow:hidden}ins{color:#777;text-decoration:none}a img{border:0}@media screen and (max-width:772px){body{background:none;margin-top:0;max-width:none;padding-right:0}}&lt;/style&gt;&lt;a href=//www.google.com/&gt;&lt;img src=//www.google.com/images/errors/logo_sm.gif alt=Google&gt;&lt;/a&gt;&lt;p&gt;&lt;b&gt;403.&lt;/b&gt; &lt;ins&gt;That’s an error.&lt;/ins&gt;&lt;p&gt;Your client does not have permission to get URL &lt;code&gt;/_ah/spi/com.lakshmi.stockmarket.DeviceInfoEndpoint.insertDeviceInfo&lt;/code&gt; from this server.  (Client IP address: 41.223.160.246)&lt;br&gt;&lt;br&gt;
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  </code></pre>