[Haskell] Re: Existing Haskell IPv6 Code

[Marcin 'Qrczak' Kowalczyk]

Tony Finch <dot at dotat.at> writes:

>> But they don't differ in addressing. In BSD sockets the difference
>> between streams and packets lies in "socket type", while addresses
>> are split into "address families" which bijectively correspond to
>> "protocol families".
>
> I believe there are some obscure protocol families that have more than
> one address family, which is why the two concepts exist in the API.

Single Unix Specification v3 specifies only AF_* constants, used for
both.

Linux man socket says:

NOTE
       The manifest constants used under BSD 4.*  for  protocol  families  are
       PF_UNIX,  PF_INET,  etc., while AF_UNIX etc. are used for address fami-
       lies. However, already the BSD man page promises: "The protocol  family
       generally  is the same as the address family", and subsequent standards
       use AF_* everywhere.

-- 
   __("<         Marcin Kowalczyk
   \__/       qrczak at knm.org.pl
    ^^     http://qrnik.knm.org.pl/~qrczak/