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myself_85560's avatar
myself_85560
Icon for Nimbostratus rankNimbostratus
Jun 01, 2016

LB decisions matching the headers

Hi, We have a custom written application that is being hosted on multiple servers behind the LTM. It does not use cookies rather a variety of unique http headers. I need to use these unique headers t...
application delivery
iRules
LTM
  • Yann_Desmarest_'s avatar
    Yann_Desmarest_
    Jun 02, 2016

    Hi,

    I would recommend the modified irule below, changed second if by elseif. Otherwise, If you match the first if you also match the else and you will have a tcl error and a tcp reset on thz client side :

    when HTTP_REQUEST {
if { [class match [HTTP::header "online.protocol.remote.contenttype"] equals header_value_1] } {
        pool_1
    }
elseif { [class match [HTTP::header "online.protocol.remote.contenttype"] equals header_value_2] } {
        pool_2
    } 
    else {
        pool_3
    }
   }
myself_85560's avatar
myself_85560
Icon for Nimbostratus rankNimbostratus
Jun 01, 2016

Hi Yann,

 

One of the header looks something like this.

 

POST /online/vendorlink/protocol/3 HTTP/1.1

 

Content-Type: application/x-onl-pki-smime

 

online.protocol.remote.contenttype: TEST/Rumba/mountainisred@4

 

Cache-Control: no-cache

 

Pragma: no-cache

 

User-Agent: Java/1.7.0_25

 

Host: host1.abc.com

 

Accept: text/html, image/gif, image/jpeg, *; q=.2, /; q=.2

 

Connection: keep-alive

 

Content-Length: 5836

 

thanks