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brepav123_22459's avatar
brepav123_22459
Icon for Cirrus rankCirrus
May 25, 2016

Using "=" symbol in iRule URL Path

Hey everyone,

 

I've got an iRule where i send traffic to a specific pool based on the URL path they send in. It works well for most URL paths but i've received a request to add a new pool from a path that contains a "=" (equals) symbol. The F5 either doesnt recognize the = symbol or it thinks im trying to set a parameter. Either way it doesnt match the URL path so it drops the traffic. When i removed the = symbol then it works perfectly. Any thoughts how to make the F5 understand the = is apart of the URL path and nothing more?

 

Thanks!

 

application delivery
irule
iRules
LTM

7 Replies

  • DEJ's avatar
    DEJ
    Icon for Nimbostratus rankNimbostratus
    May 25, 2016

    I don't have access to my lab box to test, but have you tried escaping the '=' with a backslash? \=

     

    • brepav123_22459's avatar
      brepav123_22459
      Icon for Cirrus rankCirrus
      May 25, 2016
      Just tried that but unfortunately no adding the backslash didn't help, it still skipped over it and dropped the traffic.
  • DEJ_159363's avatar
    DEJ_159363
    Icon for Cirrus rankCirrus
    May 25, 2016

    I don't have access to my lab box to test, but have you tried escaping the '=' with a backslash? \=

     

    • brepav123_22459's avatar
      brepav123_22459
      Icon for Cirrus rankCirrus
      May 25, 2016
      Just tried that but unfortunately no adding the backslash didn't help, it still skipped over it and dropped the traffic.
  • Stanislas_Piro2's avatar
    Stanislas_Piro2
    Icon for Cumulonimbus rankCumulonimbus
    May 25, 2016

    Hi,

    I tried this irule and it detect equals character:

    when HTTP_REQUEST {
if {[HTTP::uri] contains "=" } { log local0. "[HTTP::uri] : detected"} else { log local0. "[HTTP::uri] : not detected" }
}

    The log is:

    May 25 14:59:49 F5adm info tmm[20143]: Rule /Common/detect-equals : /foo=bar/ : detected
May 25 14:59:53 F5adm info tmm[20143]: Rule /Common/detect-equals : / : not detected
  • Stanislas_Piro2's avatar
    Stanislas_Piro2
    Icon for Cumulonimbus rankCumulonimbus
    May 25, 2016

    You can use the following irule:

    HTTP_REQUEST {
    if {([HTTP::uri] equals "/")  && ([URI::query [HTTP::uri] publication] equals "ecmrc")} {
        pool Oracle_11i_TLS_Mcmaster_Pool_Test
    } else {discard}
}

    or 

    HTTP_REQUEST {
    switch -glob [HTTP::uri] {
        "/?publication=ecmrc" { pool Oracle_11i_TLS_Mcmaster_Pool_Test }
        default { discard }
    }
}