Create an IPv6 address from the eight 16-bit fragments that make it up. This closely resembles the standard IPv6 notation, so is used for the Show instance. Note that this lacks the formatting feature for suppress zeroes in an IPv6 address, but it should be readable enough for hacking in GHCi.

>>> let addr = ipv6 0x3124 0x0 0x0 0xDEAD 0xCAFE 0xFF 0xFE00 0x1
>>> addr
ipv6 0x3124 0x0000 0x0000 0xdead 0xcafe 0x00ff 0xfe00 0x0001
>>> T.putStrLn (encode addr)
3124::dead:cafe:ff:fe00:1

An alias for the ipv6 smart constructor.

Build an IPv6 from four 32-bit words. The leftmost argument is the high word and the rightword is the low word.

Uncurried variant of fromWord16s.

Uncurried variant of fromWord32s.

Convert an IPv6 to eight 16-bit words.

Convert an IPv6 to four 32-bit words.

Encodes the IP, using zero-compression on the leftmost-longest string of zeroes in the address. Per RFC 5952 Section 5, this uses mixed notation when encoding an IPv4-mapped IPv6 address:

>>> T.putStrLn $ encode $ fromWord16s 0xDEAD 0xBEEF 0x0 0x0 0x0 0x0 0x0 0x1234
dead:beef::1234
>>> T.putStrLn $ encode $ fromWord16s 0x0 0x0 0x0 0x0 0x0 0xFFFF 0x6437 0xA5B4
::ffff:100.55.165.180
>>> T.putStrLn $ encode $ fromWord16s 0x0 0x0 0x0 0x0 0x0 0x0 0x0 0x0
::

Decode an IPv6 address. This accepts both standard IPv6 notation (with zero compression) and mixed notation for IPv4-mapped IPv6 addresses.

Checks to see if an IPv6 address belongs in the IPv6Range.

>>> let ip = ipv6 0x2001 0x0db8 0x0db8 0x1094 0x2051 0x0000 0x0000 0x0001
>>> let iprange mask = IPv6Range (ipv6 0x2001 0x0db8 0x0000 0x0000 0x0000 0x0000 0x0000 0x0001) mask
>>> contains (iprange 8) ip
True
>>> contains (iprange 48) ip
False

Typically, element-testing functions are written to take the element as the first argument and the set as the second argument. This is intentionally written the other way for better performance when iterating over a collection. For example, you might test elements in a list for membership like this:

>>> let r = IPv6Range (ipv6 0x2001 0x0db8 0x0000 0x0000 0x0000 0x0000 0x0000 0x0001) 64
>>> fmap (contains r) (take 5 $ iterate succ $ ipv6 0x2001 0x0db8 0x0000 0x0000 0xffff 0xffff 0xffff 0xfffe)
[True,True,False,False,False]

The implementation of contains ensures that (with GHC), the bitmask creation and range normalization only occur once in the above example. They are reused as the list is iterated.

This is provided to mirror the interface provided by Data.Set. It behaves just like contains but with flipped arguments.

member ip r == contains r ip

The inclusive lower bound of an IPv6Range. This is conventionally understood to be the broadcast address of a subnet. For example:

>>> T.putStrLn $ encode $ lowerInclusive $ IPv6Range (ipv6 0x2001 0x0db8 0x0000 0x0000 0x0000 0x0000 0x0000 0x0001) 25
2001:d80::

Note that the lower bound of a normalized IPv4Range is simply the ip address of the range:

lowerInclusive r == ipv6RangeBase (normalize r)

This exists mostly for testing purposes.

A 128-bit Internet Protocol version 6 address.