How to send the "HTTP::header insert" to the backend server using VPE (LTM+APM Mode)

Hi,

the ACCESS_ACL_ALLOWED is the best event to insert APM headers.

when ACCESS_ACL_ALLOWED {
    if {![info exists APMusername]} {
        set APMusername [ACCESS::session data get session.logon.last.username]
    }
    if {![info exists APMdomain]} {
        set APMdomain [ACCESS::session data get session.custom.domain]
    }
    HTTP::header insert USER $APMusername
    HTTP::header insert DOMAIN $APMdomain
}

Store these values in tcl variables for next requests,

ACCESS::session