IPv6 network programming

This book contains everything you need to make your application program support IPv6. IPv6 socket APIs (RFC2553) are fully described with real-world examples. It covers security, a great concern these days. To secure the Internet infrastructure, every developer has to take a security stance - to audit every line of code, to use proper API and write correct and secure code as much as possible. To achieve this goal, the examples presented in this book are implemented with a security stance. Also, the book leads you to write secure programs. For instance, the book recommends against the use of some of the IPv6 standard APIs - unfortunately, there are some IPv6 APIs that are inherently insecure, so the book tries to avoid (and discourage) the use of such APIs. Another key issue is portability. The examples in the book should be applicable to any of UNIX based operating systems, MacOS X, and Windows XP. * Covers the new protocol just adopted by the Dept of Defense for future systems * Deals with security concerns, including spam and email, by presenting the best programming standards * Fully describes IPv6 socket APIs (RFC2553) using real-world examples * Allows for portability to UNIX-based operating systems, MacOS X, and Windows XP Constructible And Perverse Sheaves Are The Algebraic Counterpart Of The Decomposition Of A Singular Space Into Smooth Manifolds, A Great Geometrical Idea Due To R. Thom And H. Whitney. These Sheaves, Generalizing The Local Systems That Are So Ubiquitous In Mathematics, Have Powerful Applications To The Topology Of Such Singular Spaces (mainly Algebraic And Analytic Complex Varieties). This Introduction To The Subject Can Be Regarded As A Textbook On Modern Algebraic Topology'', Which Treats The Cohomology Of Spaces With Sheaf Coefficients (as Opposed To The Classical Constant Coefficient Cohomology). The First Five Chapters Introduce Derived Categories, Direct And Inverse Images Of Sheaf Complexes, Verdier Duality, Constructible And Perverse Sheaves, Vanishing And Characteristic Cycles. They Also Discuss Relations To D-modules And Intersection Cohomology. The Final Chapters Apply This Powerful Tool To The Study Of The Topology Of Singularities, Of Polynomial Functions And Of Hyperplane Arrangements. Some Fundamental Results, For Which Excellent Sources Exist, Are Not Proved But Just Stated And Illustrated By Examples And Corollaries. In This Way, The Reader Is Guided Rather Quickly From The A-b-c Of The Theory To Current Research Questions, Supported In This By A Wealth Of Examples And Exercises. Derived Categories -- Derived Categories In Topology -- Poincaré-verdier Duality -- Constructible Sheaves, Vanishing Cycles And Characteristic Varieties -- Perverse Sheaves -- Applications To The Geometry Of Singular Spaces -- References -- Index. Alexandru Dimca. Includes Bibliographical References (p. [223]-232)m And Index. Constructible and perverse sheaves are the algebraic counterpart of the decomposition of a singular space into smooth manifolds, a great geometrical idea due to R. Thom and H. Whitney. These sheaves, generalizing the local systems that are so ubiquitous in mathematics, have powerful applications to the topology of such singular spaces (mainly algebraic and analytic complex varieties). This introduction to the subject can be regarded as a textbook on modern algebraic topology', treating the cohomology of spaces with sheaf (as opposed to constant)coefficients. The first 5 chapters introduce derived categories, direct and inverse images of sheaf complexes, Verdier duality, constructible and perverse sheaves, vanishing and characteristic cycles. They also discuss relations to D-modules and intersection cohomology. Later chapters apply this powerful tool to the study of the topology of singularities, polynomial functions and hyperplane arrangements. Some fundamental results, for which excellent sources exist, are not proved but just stated and illustrated by examples and corollaries. In this way, the reader is guided rather quickly from the basic theory to current research questions, supported in this by examples and exercises. TOC:Derived Categories.- Derived Categories in Topology.- Poincaré-Verdier Duality.- Constructible Sheaves, Vanishing Cycles and Characteristic Varieties.- Perverse Sheaves.- Applications to the Geometry of Singular Spaces.- References.- Index.- Annotation This book contains everything you need to make your application program support IPv6. IPv6 socket APIs (RFC2553) are fully described with real-world examples. It covers security, a great concern these days. To secure the Internet infrastructure, every developer has to take a security stance - to audit every line of code, to use proper API and write correct and secure code as much as possible. To achieve this goal, the examples presented in this book are implemented with a security stance. Also, the book leads you to write secure programs. For instance, the book recommends against the use of some of the IPv6 standard APIs - unfortunately, there are some IPv6 APIs that are inherently insecure, so the book tries to avoid (and discourage) the use of such APIs. Another key issue is portability. The examples in the book should be applicable to any of UNIX based operating systems, MacOS X, and Windows XP. * Covers the new protocol just adopted by the Dept of Defense for future systems * Deals with security concerns, including spam and email, by presenting the best programming standards * Fully describes IPv6 socket APIs (RFC2553) using real-world examples * Allows for portability to UNIX-based operating systems, MacOS X, and Windows XP Constructible and perverse sheaves are the algebraic counterpart of the decomposition of a singular space into smooth manifolds. This introduction to the subject can be regarded as a textbook on modern algebraic topology, treating the cohomology of spaces with sheaf (as opposed to constant) coefficients. The author helps readers progress quickly from the basic theory to current research questions, thoroughly supported along the way by examples and exercises. In 1992, the IETF (http://www.ietf.org/) became aware of a global shortage of IPv4 addresses and technical obstacles in deploying new protocols due to limitations imposed by IPv4. World-renowned expert's book on porting IPv6-ready applications is unique! We assume the reader is familiar to the basic notions of category theory.