FreeBSD: Sockets - FreeBSD Developers' Handbook chapter about using sockets
RFC 2292: Advanced Sockets API for IPv6 - Defines some the advanced features of the sockets API that are required for applications to take advantage of additional features of IPv6.
sockaddr.com - Programming Resources for WinSock 1.1 and 2 including sample programs, specifications, and links. (Lewis Napper)
TCP/IP Raw Sockets - MSDN documentation about Raw Socket specification. Raw sockets can be used to create your own protocols.
Windows Sockets 2 - Developer documentation of Winsock for all Windows platforms.
