How to create iRule to forward request depending on context input

Try something as follows. If you want to use 302 as a redirect method, make sure you also use the

TCP::close

close command after

event disable

    when HTTP_REQUEST {

    if { [HTTP::uri] starts_with "/aa/bb/cc" } {
      set PREFIX_STATIC "/aa/bb/cc"
      log local0. "Original URI: [HTTP::uri]"
      set XX_VAL [ getfield [HTTP::uri] "/" 5]
      set YY_VAL [ getfield [HTTP::uri] "/" 6]
      set ZZ_VAL [ getfield [HTTP::uri] "/" 7]
      log local0. "XX_VAL = $XX_VAL | YY_VAL = $YY_VAL | ZZ_VAL = $ZZ_VAL"
      log local0. "Redirect destination: [HTTP::host]$PREFIX_STATIC?t1=$XX_VAL&t2=$YY_VAL&t3=$ZZ_VAL"
      HTTP::respond 301 Location "[HTTP::host]$PREFIX_STATIC?t1=$XX_VAL&t2=$YY_VAL&t3=$ZZ_VAL"
      event disable
    }
}

Oct 14 10:12:08 local/tmm info tmm[15625]: Rule irule_asd-test : Original URI: /aa/bb/cc/f3/f4/f5

Oct 14 10:12:08 local/tmm info tmm[15625]: Rule irule_asd-test : XX_VAL = f3 | YY_VAL = f4 | ZZ_VAL = f5

Oct 14 10:12:08 local/tmm info tmm[15625]: Rule irule_asd-test : Redirect destination: www.abc.com/aa/bb/cc/?t1=f3&t2=f4&t3=f5