I teach a college course on network game programming and this is probably the best resource that I've yet seen on the subject. Only the last few chapters specifically deal with network programming however they are extremely good and cover a lot of the core issues with network gaming. Some of the topics include dealing with lag via dead reckoning and splines, local perception filters, area of interest filters, as well as some information on cheating and how to deal with it.

This book is absolutely NOT for someone just starting out with network programming or programming in general; I would recommend this for someone who knows the fundamentals of networking and using sockets and is a fairly strong C/C++ programmer and is interested in developing moderately simple network games. More inexperienced developers will probably benefit from this book if they have someone who can help clarify and explain the concepts.