APM / responding session ID to client with JSON

Hey PeteWhite,

Thanks for your reply and sorry for my delayed reply. In the meantime I had a discussion with one of my go-to F5 engineers who found a solution for me. Here we go:

when HTTP_RESPONSE_RELEASE {
    set block [ACCESS::session data get session.custom.Return401]
    # set variable to Return401
    log local0. "Block: $block"
    if { $block eq "1" } {
    # respond JSON when variable block equals 1
        set userSessionId [string range [ACCESS::session sid] end-7 end]
        HTTP::respond 401 content "{\"title\":\"Unauthorized\",\"status\":401,\"sessionid\":\"$userSessionId\"}" noserver Connection Close WWW-Authenticate Bearer
        # respond 401 with JSON body and include "WWW-Authenticate Bearer" in header
        # include last 8 bits of MRH session id
        ACCESS::session remove
    }
}