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sharpie_79656's avatar
sharpie_79656
Icon for Nimbostratus rankNimbostratus
Sep 10, 2013

iRule with Multiple Streams

I have an iRule that currently replaces instances of http with https found in javascript. This has been working for several months now. Recently we discovered a bug in the way a client performs a specific HTTP GET. The URI it should be requesting ends with "repor1.dat" when it should end with "report1.dat". I've modified my iRule, but it appears I am doing something wrong.

when HTTP_REQUEST {
    if {[HTTP::uri] matches_regex {repor\d\.dat}}{
        STREAM::expression {@repor@report@}
    }
}
when STREAM_MATCHED {
    log "MEDWEB Stream Match: [STREAM::match]"
}
when HTTP_RESPONSE {
    STREAM::expression {@http://@https://@}
    STREAM::enable
}
application delivery
devops
iRules

2 Replies

  • Kevin_Stewart's avatar
    Kevin_Stewart
    Icon for Employee rankEmployee
    Sep 10, 2013

    You should need a STREAM expression to modify the URI. Try this:

    when HTTP_REQUEST {
    switch -glob [string tolower [HTTP::uri]] {
        "*repor?.dat*" {
            set report_num [findstr [string tolower [HTTP::uri]] "repor" 5 ".dat"]
            set old_value "repor${report_num}.dat"
            set new_value "report${report_num}.dat"
            HTTP::uri [string map "$old_value $new_value" [string tolower [HTTP::uri]]]
        }
    }
}