asp.net mvc - UrlRewrite not working when using TransferRequest -

i have urlrewrite rule, looks this:

<rewrite>     <rules>                      <rule name="add prefix pictures request" stopprocessing="true">           <match url="^pictures/(.*)" />           <action type="rewrite" url="/pictures/pictures-dev/{r:1}" appendquerystring="true" logrewrittenurl="true" />         </rule>     </rules> </rewrite> 

the idea add kind of prefix original request (in case, prefix /pictures/pictures-dev/. later rewritten request processed plugin , not handled code. /pictures endpoint main endpoint such requests. rewrite rule vital, , without rule applied request won't processed.

also have controller named imagescontroller, has single method get. method should act /pictures endpoint, additional processing. thing important /images endpoint cannot issue client-side redirect (http 301) design.

so, desired redirect requests /images /pictures. due additional processing, cannot redirect requests /images /pictures.

to achieve this, i've done following in imagescontroller:

[system.web.http.httpget] public ihttpactionresult get(long id) {      // work done here      // ....      // transferrequest not return in case of successful request      httpcontext.current.server.transferrequest($"~/pictures/{id}", true);       return null;  } 

as i've found lot transferrequest, method should re-run whole iis request stack, suppose urlrewrite should executed.

i expect "pictures/{id}" rewritten "/pictures/pictures-dev/{id}". however, see "/pictures/{id}" issued transferrequest not rewritten, makes me think urlrewrite module not executed against "transferred" request.

what missing? or maybe there other ways achieve this?

thanks!