Forum Discussion

Roman_80473's avatar
Roman_80473
Icon for Nimbostratus rankNimbostratus
Jul 01, 2011

How to find HOST protocol inside iRule?

Hi folks,

 

 

Is there a way to find host protocol inside HTTP_REQUEST event in iRule? I can get host ([HTTP::host] ) and uri ([HTTP::uri]), but not sure about protocol.

 

 

 

Any help is appreciated,

 

Thanks, Roman
dev
devops
iControl
  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    Jul 05, 2011
    Hi Roman,

     

     

    You can't tell from just the HTTP headers or payload whether the request was sent via SSL. You can either assume SSL based on the virtual server port [TCP::local_port] or use an iRule to test whether a cipher was used:

     

     

    http://devcentral.f5.com/Default.aspx?tabid=53&view=topic&postid=1170929&ptarget=1170978

     

     

    Aaron
  • Roman_80473's avatar
    Roman_80473
    Icon for Nimbostratus rankNimbostratus
    Jul 05, 2011
    Aaron,

     

     

    Thank you for your reply. Should I use both approaches to determine for sure whether SSL is used?

     

    if TCP::local_port value is 443 AND if {not ([catch {SSL::cipher version} result]) && $result ne "none"}

     

    protocol = "https"

     

     

     

    Thanks, Roman

     

  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    Jul 05, 2011
    Hi Roman,

     

     

    You don't need to check the port if you use this:

     

     

    if {not ([catch {SSL::cipher version} result]) && $result ne "none"}

     

     

    Aaron