Which rewrite action correctly changes the HTTP request version to HTTP/1.0?

• A. add rewrite action RW_ACT replace http.res.version HTTP/1.1; add rewrite policy RW_POL true RW_ACT
• B. add rewrite action RW_ACT replace http.req.version HTTP/1.1; add rewrite policy RW_POL true RW_ACT
• C. add rewrite action RW_ACT replace http.res.version HTTP/1.0; add rewrite policy RW_POL true RW_ACT
• D. add rewrite action RW_ACT replace http.req.version HTTP/1.0; add rewrite policy RW_POL true RW_ACT

Answer: (D)

The rewrite mechanism switches parts of the HTTP message as it flows through the appliance, so to change the protocol version of the request you must modify the request-side attribute. The correct action uses http.req.version, which represents the HTTP version of the incoming request, and sets it to HTTP/1.0. This is applied via a rewrite action and tied to a rewrite policy, ensuring the modification happens for the request as it’s processed.

Options that target http.res.version affect the response, not the request, and setting the version to HTTP/1.1 would not meet the requirement of converting the request to HTTP/1.0. Therefore, the approach that changes the request version to HTTP/1.0 is the right one.