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habib_Khan's avatar
habib_Khan
Icon for Nimbostratus rankNimbostratus
Jun 08, 2016

stream profile-- using irule need to replace text

when i access a url, below is the page content displayed. InstallApplication

 

I am using stream profile with irule to replace the text "InstallApplication" with some garbage text. I tried below url with stream profile, this is not working. Kindly help.

 

when HTTP_REQUEST {

 

Disable the stream filter for client requests

STREAM::disable HTTP::header remove "Accept-Encoding" } when HTTP_RESPONSE {

 

Enable the stream filter for XML responses only

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

 

Replace 'InstallApplication' with 'MisMatch000'

STREAM::expression {@InstallApplication@MisMatch000@} STREAM::enable } }

 

application delivery
iRules
LTM

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  • Yann_Desmarest's avatar
    Yann_Desmarest
    Icon for Cirrus rankCirrus
    Jun 08, 2016

    Hi,

    I regularly use similar irule that do not rely on stream profiles : 

    when HTTP_REQUEST {
    HTTP::header remove "Accept-Encoding"
}

when HTTP_RESPONSE {
    if { [HTTP::header Content-Type] contains "text/xml" } {
        if { [HTTP::header exists "Content-Length"] } {
            set content_length [HTTP::header "Content-Length"]
        } else {
            set content_length 1000000
        }
        if { $content_length > 0 } {
            HTTP::collect $content_length
        }
    }
}
when HTTP_RESPONSE_DATA { 
    HTTP::payload replace 0 $content_length [string map "InstallApplication" "MisMatch000" [HTTP::payload]]
    HTTP::release
}
  • JG's avatar
    JG
    Icon for Cumulonimbus rankCumulonimbus
    Dec 13, 2016

    They are HTML-encoded and you can treat those characters just as a string.