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POST Preservation Issue with Transfer-Encoding Header

The SPS has a limitation for post preservation support with Transfer-Encoding chunked header.

For chunked data to be sent from the SPS to a protected resource, the user should be authenticated and have an established session. The SPS does not challenge a user for credentials in response to a request where chunked data is sent via a POST.

When using proxy filters for accessing the request or response data, the request or response is no longer sent in a chunked format. The entire request or response body is buffered within SPS and sent in a non-chunked or content-length based format.