$portfree returns $true if the specified port is free, $false otherwise
- N - The port number
- ipaddress - if you specify an ip address (can also be an adapter name), only the interface with that ip address is checked for used ports.
Added: mIRC v5.3
Added on: 13 Dec 1997
Note: Unless otherwise stated, this was the date of original functionality.
Further enhancements may have been made in later versions.