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Perry_B__8260's avatar
Perry_B__8260
Icon for Nimbostratus rankNimbostratus
Nov 28, 2007

Logical Operator or Pipebar?

Hi -- I want to listen on VIP for TCP::client_port (445,1051,1052,10521) and direct to a Pool. Would it be required to use OR and braces for each eq statement -- or is this possible --

 

 

iRule my_iRule {

 

when CLIENT_ACCEPTED

 

if { [TCP::client_port] eq 445 || eq 1051 || eq 1052 || eq 10521 } {

 

pool my_POOL

 

}

 

else {

 

TCP::close

 

}

 

}

 

 

Thank you...

 

application delivery
dev
devops
iRules
  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Nov 28, 2007
    Hi,

    You can use 'or' or || in TCL, but you'd need to have each condition listed fully. Also, if you're wanting to restrict which ports the virtual server accepts traffic on, you should use TCP::local_port in the clientside context (Click here). For your scenario, using a switch would be cleaner than a set of if's (Click here). Here are two versions:

    
when CLIENT_ACCEPTED {
   if { [TCP::local_port] eq 445 || [TCP::local_port] eq 1051 || [TCP::local_port] eq 1052 || [TCP::local_port] eq 10521 } {
      pool my_POOL
   } else {
      TCP::close
   }
}

    
when CLIENT_ACCEPTED {
   switch [TCP::local_port] {
      445 -
      1051 -
      1052 -
      10521 {
         log local0. "allowed [IP::client_addr]:[TCP::client_port] -> [IP::local_addr]:[TCP::local_port]"
         pool my_pool
      }
      default {
         log local0. "dropped [IP::client_addr]:[TCP::client_port] -> [IP::local_addr]:[TCP::local_port]"
         drop
      }
   }
}

    Aaron