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Ankur_5273's avatar
Ankur_5273
Icon for Nimbostratus rankNimbostratus
Jun 12, 2014

Rewrite the content in URI with a short URL

Hi Experts   I need assistance on shortening of URL as follows   If a web page with following Source URL is browsed , then a part of URI (highlighted in bold) should be converted to "en" (whi...
  • Kevin_Davies_40's avatar
    Kevin_Davies_40
    Jun 12, 2014

    I am unable to update my original post. Here is an updated version.

    If you simply want to mask URL's then apply a STREAM profile with the following iRule.

    when HTTP_REQUEST {
  log local0. "..in HTTP_REQUEST"

   no replacement for requests
  STREAM::disable
   disable compression server side
  HTTP::header remove "Accept-Encoding"
}
when HTTP_RESPONSE {
  log local0. "...in HTTP_RESPONSE"

   only replace text content
  if {!([HTTP::header value Content-Type] contains "text")}{ return}

  set search ""
  foreach pair [class get myclass] { 
    set search "$search@[lindex $pair 0]@[lindex $pair 1]@"
  }
  log local0. "String replace=$search"
  STREAM::expression $search
  STREAM::enable
}

    Then create a string data class myclass as follows...

    Name                                      Value
/secureapp/connect/report_en/REP   /en
/peter                             /pan

    And get the following output from a logs

    Rule /Common/myrule : ...in HTTP_REQUEST
Rule /Common/myrule : ...in HTTP_RESPONSE
Rule /Common/myrule : search=@/secureapp/connect/report_en/REP@/en@@/peter@/pan@

    And the resulting web page...

    It works!

/en
/pan
Kevin_Davies_40's avatar
Kevin_Davies_40
Icon for Nacreous rankNacreous
Jun 14, 2014

The STREAM commands allow search and replace of data passing to and from the webserver. In this case I have enabled it only on the response coming back from the webserver... (STREAM::enable/disable). The stream expression is a sequence of search and replace pairs in the format @search@replace@. The foreach loop builds a stream expression from name and value pairs in the class myclass. We also turn off compression as most websites send data compressed although the user is never aware of this but we cannot process compressed data. Removing the Accept-Encoding header means the website will not compress the reply.

 

So any webpage with http://www.myweb.com/secureapp/connect/report_en/REP/XYZ on it will display http://www.myweb.com/en/XYZ instead.