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VikashC's avatar
VikashC
Icon for Cirrus rankCirrus
Apr 10, 2020

Need Irule for redirection for port translation

Hello team,

 

I am trying to configure one web service. Post configuration when i tried to access service using F5 VS, the requests redirected to the http host with automatically addition of service port 8080 which is backend webserver port.

 

e.g. i was trying to access web service using https://abc.com --> it got redirected to http://abc.com:8080

 

I am sure, F5 is not adding this port. This is happening due to hard coded port from application itself but application team member is not able to find it under application config. I am looking for an iRule which will help to redirect 'http://abc.com:8080' to https://abc.com again.

 

I tried several which are available on internet but somehow not working for me. Please help me here.

BIG-IP
iRules
security
  • Mayur_Sutare's avatar
    Mayur_Sutare
    Apr 10, 2020

    Hello Vikash,

     

    Please try below iRule -

     

     

    when HTTP_REQUEST {

        if { [string tolower [HTTP::host]] contains "abc.com" } {

        pool abc-pool

      }

    HTTP::header remove Accept-Encoding

     

    STREAM::disable

     

    }

    when HTTP_RESPONSE {

      # Disable the stream filter for server responses

      STREAM::disable

      # Enable the stream filter for text responses only

      if {[HTTP::header value Content-Type] contains "text"}{

     

       # Replace 'old_text' with 'new_text'

    STREAM::expression {@http://abc.com:8080/@https://abc.com/@}

       # Enable the stream filter for this response only

       STREAM::enable

      }

    }

     

     

    Hope it works for you!

    Mayur

     

  • Mayur_Sutare's avatar
    Mayur_Sutare
    Icon for MVP rankMVP
    Apr 10, 2020

    Hello Vikash,

     

    Please try below iRule -

     

     

    when HTTP_REQUEST {

        if { [string tolower [HTTP::host]] contains "abc.com" } {

        pool abc-pool

      }

    HTTP::header remove Accept-Encoding

     

    STREAM::disable

     

    }

    when HTTP_RESPONSE {

      # Disable the stream filter for server responses

      STREAM::disable

      # Enable the stream filter for text responses only

      if {[HTTP::header value Content-Type] contains "text"}{

     

       # Replace 'old_text' with 'new_text'

    STREAM::expression {@http://abc.com:8080/@https://abc.com/@}

       # Enable the stream filter for this response only

       STREAM::enable

      }

    }

     

     

    Hope it works for you!

    Mayur

     

  • Mayur_Sutare's avatar
    Mayur_Sutare
    Icon for MVP rankMVP
    Apr 12, 2020

    Hello  ,

     

    Either you can have separate iRule for each host URL and attached all such iRules to the required Virtual Server or

    You can add all the URLs under single iRule as given below -

     

     

    when HTTP_REQUEST {

        if { [string tolower [HTTP::host]] contains "abc.com" } {

        pool abc-pool

        }elseif { [string tolower [HTTP::host]] contains "xyz.com"} {

        pool xyz-pool

      }

     

    HTTP::header remove Accept-Encoding

     

    STREAM::disable

     

    }

    when HTTP_RESPONSE {

      # Disable the stream filter for server responses

      STREAM::disable

      # Enable the stream filter for text responses only

      if {[HTTP::header value Content-Type] contains "text"}{

     

       # Replace 'old_text' with 'new_text'

    STREAM::expression {@http://abc.com:8080/@https://abc.com/@\

    @http://xyz.com:8080/@https://xyz.com/@}

    }

       # Enable the stream filter for this response only

       STREAM::enable

      }

     

     

    I have highlighted additional changes for other url. You can compare both iRules to get clarity. This way you can have multiple re-directions for multiple URLs under same iRule.

     

    Thank you,

    Mayur

  • VikashC's avatar
    VikashC
    Icon for Cirrus rankCirrus
    Apr 12, 2020

     ,

     

    It worked perfectly for me!! Thanks for the help, appreciate it !!

    Just one question here, if i want to add one more host redirection in the same iRule then how will be the formatting? This is because, mostly we have multiple host traffic behind one VS. So we have commons iRules. e.g. under above iRULE itself, i want to add redirection from http://xyz.com:8080 to https://xyz.com.

     

    What will be my iRule?