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George_32239's avatar
George_32239
Icon for Nimbostratus rankNimbostratus
Oct 27, 2009

Multiple comparisons in an iRule

Hello All,

 

 

I need a rule that will look at a hostname the [HTTP::host] and also looke at part of the URI, the [HTTP:uri] bit.

 

 

If both conditions are the same I need to send the request to a certain pool if both sets do not match need to send them to another pool.

 

 

I don't know if an ANDIF statement exists.

 

 

Apologies in advance, our firm has not sent us on any training courses and am struggling with this

 

 

Any help greatly appreciated

 

 

Thanks,

 

 

George
application delivery
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iRules
  • George_32239's avatar
    George_32239
    Icon for Nimbostratus rankNimbostratus
    Oct 27, 2009
    I think I figured it out using the following;

     

     

    when HTTP_REQUEST {

     

    if { [HTTP::host] eq "somehost.com" && [HTTP::uri] contains "somestring"} {

     

    pool some_pool }

     

    else

     

    {pool some_other_pool}

     

    }

     

     

    I am now going to try the string tolower bit

     

     

    Thanks
  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Oct 27, 2009
    Hi George,

    There are quite a few examples in the forums and the iRules wiki of iRules which check the host (retrieved using HTTP::host Click here) and the URI (retrieved using HTTP::uri Click here).

    Here is one example of checking the host and URI to select corresponding pools: 

     
 when HTTP_REQUEST { 
  
     This event is triggered when LTM parses the HTTP request headers 
  
     Check requested host using lower case 
    if {[string tolower [HTTP::host]] eq "subdomain.example.com"}{ 
  
        Check the requested URI 
       if {[HTTP::uri] starts_with "/some_uri"}{ 
           pool some_pool 
       } else { 
           pool other_pool 
       } 
    } else { 
       pool some_other_pool 
    } 
 }

    Aaron
  • George_32239's avatar
    George_32239
    Icon for Nimbostratus rankNimbostratus
    Oct 27, 2009
    Hi Aaron,

     

     

    Many thanks for your reply. I should have an environment I can test on tomorrow.

     

     

    George