A set of functions for working with IPv4 addresses.
is_ipv4?/1- checks if a string is an IPv4 address.is_rfc1918?/1- checks if a string is an RFC1918 reserved address.is_reserved?/1- checks if a string is any kind of reserved address. More complete than just RFC1918.to_integer/1- convert IP address string to integer.is_between?/3- checks if the first IP address is between the next two addresses (inclusive).parse_ipv4_address/1- converts IP address to tuple for use with Erlang functions, e.g. :gen_tcp
There are also some functions for manipulating subnet masks.
subnet_bit_string/1- converts subnet mask to string of ones and zeros.subnet_bit_count/1- converts subnet mask to integer count of bits.
You almost certainly want to use is_reserved?/1 to find out if an IP address is
"normal" or not. There are a lot of reserved addresses, such as the 0.0.0.0/8
network which are not RFC1918 addresses. So unless you're really checking
for just RFC1918, use is_reserved?/1.
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Copyright (c) 2016, Kevin Thompson.
This work is free. You can redistribute it and/or modify it under the terms of the MIT License. See the LICENSE.md file for more details.