asp.net - ASP redirect script not added www when needed -

my script redirects users type in domain.com, http://domain.com, http://www.domain.com, etc... http://www.domain.com... not work.

when domain.com used url script not redirect correctly https://www.domain.com ... happens lot ie. tried added www response.redirect() add wwwwww.domain.com if user being redirected http://www.domain.com https:// ... idea on how can fix domain variation redirect https://www.domain.com

dim srvname, scrname if request.servervariables("https") = "off"      srvname = request.servervariables("server_name")      scrname = request.servervariables("script_name")       select case srvname     case "localhost"         'do nothing     case "domain.com"         'do nothing     case "www.domain.com"         'do nothing     case else         response.redirect("https://" & srvname & scrname)      end select end if