iRule: problem modifying uri without a redirect

While you can be assured the magic is happening without logging, there really isn't any validation in that example. If going this route, might as well not set the variable to conserve cycles. Also, more conservative to send one log statement.

 
 when HTTP_REQUEST { 
   if { [HTTP::uri] starts_with "/test" } { 
     HTTP::uri /index.html 
     log local0. "Original URI: [HTTP::uri], New URI: /index.html" 
   } 
 } 
 

If you want to handle the case issues, (ie, user1 enters /test, but user2 enters /Test), use the string tolower command.

HTH...Jason