[Irule][ASM] Header name with no header value

Hi Hoang Hung,

You can check this article: Disabling a violation for a URL using an iRule (f5.com)

According to article, first get the violation name in a separate irule and then use that violation name in second irule with your host header condition. Do not forget to change the "Specific_ASM_Violation" value with the name of matched violation, when the request with header name "abc" has no value.

when ASM_REQUEST_DONE {
  if {[ASM::violation names] contains "Specific_ASM_Violation" and [HTTP::header "abc"] equals "" } {
    ASM::unblock
    log local0. "ASM unblocking"
  }
}