how long to try for, in ticks (optional; default: 1800)
file system name of a local host file (optional; default: none)
-- part contents for background part 4
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Call the domain name resolver to translate a name into a comma-separated list of IP addresses (suitable for passing to activeOpen or passiveOpen). If the name is an dot-format IP address, it will simply translate it to a number and return. If it is a name, the domain name resolver will first look in the local host file, if the name of one is given. Then it will try to contact the domain name server
(assuming the user has properly configured MacTCP). If this too fails, it will return empty.
The result is a comma-separated list of IP address since one host may have more than one IP address.