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jquinones82_469's avatar
jquinones82_469
Icon for Nimbostratus rankNimbostratus
Oct 20, 2010

how do you check for a null http referer

I want to check for a blank http referer for an IRULE

 

 

([HTTP::header "Referer"] equals $null)

 

 

is there some type of variable or way to check for this?

 

 

Would I have to use the length function for the http::referrer?

 

 

 

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  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    Oct 20, 2010
    I think [HTTP::header $header_name] will return a null string even if the header doesn't exist, so you could combine that with a check to see if the header exists:

     

     

    if {[HTTP::header exists Referer] && [HTTP::header Referer] eq ""}{

     

     

    Or if you just want to check that it's not null you could use:

     

     

    if {[HTTP::header Referer] ne ""}{

     

     

    Aaron