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Kevin_Nail's avatar
Kevin_Nail
Icon for Nimbostratus rankNimbostratus
Jun 23, 2016

Need help stripping out certain characters in the URI

Trying to develop an iRule to remove "<' ">" characters from a URI

 

I wrote a very simple iRule to accomplish this but what I see in the log is not what is being sent in the browser. for Example my irule is this:

 

when HTTP_REQUEST { log local0. "Incoming URI = [HTTP::uri]" set uri [string map -nocase {"<" "<"} [HTTP::uri]] log local0. "New URI = $uri" }

 

I am sending this in my browser and yes I know it will not work but it does log for me: http://10.9.49.155/<>oam/server

 

What I see in the log is this:

 

Jun 23 15:31:31 slot2/xxxxxxx info tmm[12824]: Rule /Common/convert_rule : Incoming URI = /%3C%3Eoam/server

 

so my irule never sees the "<"

 

Is the LTM deconding/encoding this string before I see it in the log? How can I get this to work?

 

Thanks, Kevin

 

application delivery
iRules

2 Replies

  • Vijay_E's avatar
    Vijay_E
    Icon for Cirrus rankCirrus
    Jun 23, 2016

    See if this link helps in formulating your iRule. Basically, you may have to implement encoding/decoding.

     

  • Yann_Desmarest's avatar
    Yann_Desmarest
    Icon for Cirrus rankCirrus
    Jun 23, 2016

    Hi,

    You have to decode the URI like below : 

    when HTTP_REQUEST { 
    log local0. "Incoming URI = [HTTP::uri]" 
    set uri [URI::decode [HTTP::uri]]
    log local0. "New URI = $uri" 
}