http header replace with host & redirect based on path

Hi,

I have written i-rule for http header replace and re-direction based on path but it is not working as expect. Please review the config and suggest what changes needs to be done for the below i-rule.

Actual i-rule :

when HTTP_REQUEST { 

    set hostname [string tolower [HTTP::host]]

    pool pool_site1

         if { $hostname equals "a.site1.commerce.example.com" } {

        HTTP::header replace "Host" "a.site1.com"

      } elseif { $hostname equals "a.services.commerce.example.com" && $uri == "/search/*" }{

          pool pool_site_new

      }

      elseif { $hostname equals "a.site2.example.com"} {

      pool pool_site2

    }

   if { [HTTP::cookie exists "MAT_PERFORMANCE_TEST"] } {

      pool pool_site3

    }

}

Above condition statements in irule are working fine but, for the below statement is not working as expected. My requirement is, if host name is a.services.commerce.example.com and path is "/search/ resources/store/12345/" it should redirect to pool_site_new and if path doesn't have /search/resource/... it should redirect to default pool or pool_site1.

 elseif { $hostname equals "a.services.commerce.example.com" && $uri == "/search/*" }{

          pool pool_site_new

      }

>>>>>>> Also wanted to http header rewrite/replace rule in the same irule <<<<<<

Host header re-write 

If header MAT_HOSTNAME = b.example.com

Replace host : b.example.com 

and send to new pool pool_site4

Please help in correcting or suggesting the required changes.

Thanking you advance.