Chapter 17. Sockets

Glendower: I can call spirits from the vasty deep.Hotspur: Why so can I, or so can any man, But will they come when you do call for them?

—Shakespeare, Henry IV, part I, Act III scene 1

			Introduction
			Recipe 17.1.  Writing a TCP Client
			Recipe 17.2.  Writing a TCP Server
			Recipe 17.3.  Communicating over TCP
			Recipe 17.4.  Setting Up a UDP Client
			Recipe 17.5.  Setting Up a UDP Server
			Recipe 17.6.  Using Unix Domain Sockets
			Recipe 17.7.  Identifying the Other End of a Socket
			Recipe 17.8.  Finding Your Own Name and Address
			Recipe 17.9.  Closing a Socket After Forking
			Recipe 17.10.  Writing Bidirectional Clients
			Recipe 17.11.  Forking Servers
			Recipe 17.12.  Pre-Forking Servers
			Recipe 17.13.  Non-Forking Servers
			Recipe 17.14.  Multitasking Server with Threads
			Recipe 17.15.  Writing a Multitasking Server with POE
			Recipe 17.16.  Writing a Multihomed Server
			Recipe 17.17.  Making a Daemon Server
			Recipe 17.18.  Restarting a Server on Demand
			Recipe 17.19.  Managing Multiple Streams of Input
			Recipe 17.20.  Program: backsniff
			Recipe 17.21.  Program: fwdport