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Lotfi_Bouhaddad's avatar
Lotfi_Bouhaddad
Icon for Nimbostratus rankNimbostratus
Feb 20, 2007

Persistence using IRule

Hi everyone,     I'm a newbie in irule programming and i need some help to do a persistence based on the http field X-Nokia-MSISDN.     how can i do to check the value of this field in th...
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JRahm's avatar
JRahm
Icon for Admin rankAdmin
Feb 20, 2007
Yes, the value of the header will be the data in the persistence table. I believe HTTP::header is available in all 9.x versions.

I'm not sure what you mean regarding persisting on least connections. Least connections is a lb method, not a persist method. The LB method on your pool settings will dictate the server, so if you don't have a valid value supplied in X-Nokia-MSISDN you can persist the connection in another way, such as client TCP port, or source address, destination address, etc. In the example below, the other conditions persist via the client's source address.


when HTTP_REQUEST {
  if { [HTTP::header exists "X-Nokia-MSISDN"] } {
    if { [HTTP::header "X-Nokia-MSISDN"] != "" } {
      persist uie [HTTP::header "X-Nokia-MSISDN"]
    } else { persist source_addr }
  } else { persist source_addr }
}