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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 15, 2014

The stream profile by default works in both directions. Only through iRules can you control when it is applied. I you have seen in the first example I do this.

 

You apply the iRule to the resources section of your virtual server and you must add a stream profile to have access to the STREAM iRule commands. You can use the system default stream profile and you do not need to fill out any fields in the profile itself. The STREAM::expression command in the iRule does that for you. You add the profile in the advanced view of your virtual server properties. Note the iRule will not apply unless there is a stream profile attached.

 

In the data class I specified name and value. Name is your Search and and value is what it will be replaced with.