In most cases (e.g. any of the nmap.socket operations), functions can
take full host and port tables instead of just host.ip and port.number.
This makes for cleaner-looking code and easier extensibility if we
decide to check for a protocol on both TCP and UDP, for instance.
This is the default and can be omitted. Seeing as the value of this
argument was "hardmatched" in 100% of cases, we're better off pretending
the parameter doesn't exist.
