POST data getting lost: Content Length = 0

I am randomly getting content-length = 0 errors on my server with the following setup:

iPhone POST's data synchronously using ASIFormDataRequest to the nginx proxy for UWSGI server.

The error appears randomly maybe once out of 200 requests.

I have searched for this problem but didn't find any clear answer. One of the pos开发者_JAVA技巧t mentioned weird ASIHTTPRequest behavior, bug. But it's not for sure.

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Ok, found an answer.

There is a problem in ASIHTTPRequest with a persistant connections as described here: https://github.com/pokeb/asi-http-request/issues/94

The workarround is to use

[request setShouldAttemptPersistentConnection:NO];

This was fixed in a newer version of the ASIHTTPRequest.