301B: BIG-IP LTM Specialist: Maintain and TroubleshootDemo

Question

A new web application is hosted at www.example.net; however, some clients still point to the legacy web application at www.example.com.

Which iRule enables clients that reference www.example.com to access the new application?

A when HTTP_REQUEST { if {[HTTP::host] equals "www.example.*" }{ HTTP::redirect "http://www.example.net" } }
B when HTTP_REQUEST { if {[HTTP::host] equals "www.example.com" }{ HTTP::redirect "http://www.example.net" } }
C when HTTP_DATA { if {[HTTP::host] equals "www.example.*" }{ HTTP::redirect "http://www.example.net" } }
D when HTTP_RESPONSE { if {[HTTP::host] equals "www.example.com" }{ HTTP::redirect "http://www.example.net" }

Explanation

The HTTP_REQUEST event runs after the client request headers have been parsed, so it can evaluate the Host header. An exact Host-header comparison to www.example.com followed by HTTP::redirect to http://www.example.net sends legacy-domain clients to the new application. HTTP::host and HTTP_REQUEST document this event and host-based redirect pattern.

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301B: BIG-IP LTM Specialist: Maintain and TroubleshootDemo

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