.http.ports ABNF Format Specifiation
Version 0.1, 12 December 2016

http-ports-file = *(http-ports-line LF)

http-ports-line = port-num SP secure-val SP loopback-val

; number of a port being listened on
port-num = *DIGIT
; whether the http subsystem has the port marked as "secure"
secure-val = ("assumed-secure" / "insecure")
; whether the port is bound only on loopback or on all interfaces
loopback-val = ("loopback" / "public")