Appengine returns Content-Length: 0 for valid requests

[Shashi Sharma]

We are facing a very strange problem.

We are doing 10 - 20 QPS on appengine with 150-250 instances running at any point of time and paying around ~650$ per day.

The problem that we are facing is that many a times the server returns a Content-Length: 0 in the response header with no content.

This is the response header that we get

HTTP/1.1 200 OK
Date: Thu, 17 Nov 2011 11:17:11 GMT
Content-Type: text/html
Server: Google Frontend
Content-Length: 0

This is intermittent - Happens for around 15% of the the calls. There is no log on AppEngine that shows any anomaly.