Source Code and Errata Availability
The source code for all the examples that appear in the book is available on the Web at www.unpbook.com. The best way to learn network programming is to take these programs, modify them, and enhance them. Actually writing code of this form is the only way to reinforce the concepts and techniques. Numerous exercises are also provided at the end of each chapter, and most answers are provided in Appendix E.
A current errata for the book is also available from the same Web site.