BSD Sockets Interface Programmer's Guide

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Chapter 5 Advanced Topics for Internet Datagram Sockets
includes information about default socket address,
synchronous I/O multiplexing with select, sending
and receiving IP multicast datagrams, and broadcast
addresses.
Chapter 6 Using UNIX Domain Stream Sockets describes the
steps involved in creating a UNIX Domain stream
socket connection between two processes executing on
the same node.
Chapter 7 Using UNIX Domain Datagram Sockets describes
the steps required to exchange data between AF_UNIX
datagram sockets on the same node without
establishing a connection.
Chapter 8 Programming Hints contains information about
troubleshooting, port addresses, diagnostic utilities,
internet daemon, inetd, portability issues, and system
and library calls.
Appendix A BSD Sockets Quick Reference Table summarizes
the differences in calls for the two sets of sockets
behavior: HP-UX BSD Sockets and X/Open Sockets.