Forum Discussion

adrian_171483's avatar
adrian_171483
Icon for Cirrus rankCirrus
Oct 06, 2016
Solved

Irule to "prepend" directory and retain URI

Hi. i have a requirement for the following:

 

type somesite.com/anything/anything

 

then we need to add /something into the URI without a redirect and retain the original client URI request

 

so the request to the server becomes:

 

somesite.com/something/anything/anything

 

it would be nice to see this back on the client browser if possible but cant have a re-direct

 

application delivery
LTM
  • adrian_171483's avatar
    adrian_171483
    Nov 04, 2016
    when HTTP_REQUEST {
    HTTP::header replace Host "[HTTP::host]:38080"
    log local0. "Sending request to server"
    Log the original path if debug is enabled
   if {$::uri_mapping_debug}{log local0. "Original path: [HTTP::host][HTTP::uri]"}

    If the path doesn't already start with the base URI and version, insert it
   if {[string tolower [HTTP::path]] starts_with "/api/"}{
      HTTP::path "/imr-ce-web[HTTP::path]"

       Log the modified path if debug is enabled
      if {$::uri_mapping_debug}{log local0. "Modified path: path: [HTTP::host][HTTP::uri]"}
   }
}

4 Replies

Sort By
  • rob_carr's avatar
    rob_carr
    Icon for Cirrostratus rankCirrostratus
    Oct 07, 2016

    Here's a link to an iRule that should accomplish what you are trying to do, other than the behavior below.

     

    it would be nice to see this back on the client browser if possible but cant have a re-direct

     

    I don't think this latter point is going to be possible.

     

  • adrian_171483's avatar
    adrian_171483
    Icon for Cirrus rankCirrus
    Nov 03, 2016

    so the Irule is not modifying the path for some reason ??

    when RULE_INIT {

    The base of the URI set ::uri_base "/mystring/"

    Enable/disable debug logging to /var/log/ltm set ::uri_mapping_debug 1 }

    when HTTP_REQUEST { Log the original path if debug is enabled if {$::uri_mapping_debug}{log local0. "Original path: [HTTP::path]"}

    If the path doesn't already start with the base URI and version, insert it if {not ([string tolower [HTTP::path]] starts_with "$::uri_base$::version_string")}{ HTTP::path [string map [list $::uri_base] [HTTP::path]]

       Log the modified path if debug is enabled
  if {$::uri_mapping_debug}{log local0. "Modified path: [string map [list $::uri_base "$::uri_base$::version_string/"] [HTTP::path]]"}

    } }

    Thu Nov 3 19:38:07 GMT 2016 info xxx tmm[14206] Rule /Common/PREPEND-DEV-TEST : Original path: /api/1/claimrefs Thu Nov 3 19:38:07 GMT 2016 info xxx tmm[14206] Rule /Common/PREPEND-DEV-TEST : Modified path: /api/1/claimrefs

    • adrian_171483's avatar
      adrian_171483
      Icon for Cirrus rankCirrus
      Nov 04, 2016

      So i have cracked it, 

          when HTTP_REQUEST {
    HTTP::header replace Host "[HTTP::host]:38080"
    log local0. "Sending request to server"
    Log the original path if debug is enabled
   if {$::uri_mapping_debug}{log local0. "Original path: [HTTP::host][HTTP::uri]"}

    If the path always starts with /api/ prepend the uri with /something
   if {[string tolower [HTTP::path]] starts_with "/api/"}{
      HTTP::path "/something[HTTP::path]"

       Log the modified path if debug is enabled
      if {$::uri_mapping_debug}{log local0. "Modified path: path: [HTTP::host][HTTP::uri]"}
   }
}
  • adrian_171483's avatar
    adrian_171483
    Icon for Cirrus rankCirrus
    Nov 04, 2016
    when HTTP_REQUEST {
    HTTP::header replace Host "[HTTP::host]:38080"
    log local0. "Sending request to server"
    Log the original path if debug is enabled
   if {$::uri_mapping_debug}{log local0. "Original path: [HTTP::host][HTTP::uri]"}

    If the path doesn't already start with the base URI and version, insert it
   if {[string tolower [HTTP::path]] starts_with "/api/"}{
      HTTP::path "/imr-ce-web[HTTP::path]"

       Log the modified path if debug is enabled
      if {$::uri_mapping_debug}{log local0. "Modified path: path: [HTTP::host][HTTP::uri]"}
   }
}