 [det]tcp_host_to_address(?HostName, 
?Address)Translate between a machines host-name and it's (IP-)address. If
HostName is an atom, it is resolved using
[det]tcp_host_to_address(?HostName, 
?Address)Translate between a machines host-name and it's (IP-)address. If
HostName is an atom, it is resolved using getaddrinfo() 
and the IP-number is unified to Address using a term of the 
format
ip(Byte1,Byte2,Byte3,Byte4). Otherwise, if Address 
is bound to an
ip(Byte1,Byte2,Byte3,Byte4) term, it is resolved by gethostbyaddr() 
and the canonical hostname is unified with HostName.
- deprecated
- New code should use host_address/3. 
This version is bootstrapped from host_address/3 
and only searches for IP4 addresses that support TCP connections.