Sun Java System Web Server 6.1 SP10 Reverse Proxy Plug-in Release Notes

HTTP/1.0 and HTTP/1.1 Compliance

The Reverse Proxy plug-in issues HTTP/1.1 requests to origin servers and will accept HTTP/1.0 responses to requests. It will not upgrade incoming HTTP/1.0 requests to HTTP/1.1 in ways that are incompatible with HTTP/1.0 (for example, it will not add a Transfer-encoding: chunked header to a request).