Van Winkle Lewis. Hands-On Network Programming with C: Learn socket programming in C and write secure and optimized network code

Packt Publishing, 2019. — 478 p. — ISBN: 978-1789349863, 1789349869.A comprehensive guide to programming with network sockets, implementing Internet protocols, designing IoT devices, and much more with CKey FeaturesLeverage your C or C++ programming skills to build powerful network applications
Get to grips with a variety of network protocols that allow you to load web pages, send emails, and do much more
Write portable network code for operating systems such as Windows, Linux, and macOSBook DescriptionNetwork programming, a challenging topic in C, is made easy to understand with a careful exposition of socket programming APIs. This book gets you started with modern network programming in C and the right use of relevant operating system APIs.
This book covers core concepts, such as hostname resolution with DNS, that are crucial to the functioning of the modern web. You'll delve into the fundamental network protocols, TCP and UDP. Essential techniques for networking paradigms such as client-server and peer-to-peer models are explained with the help of practical examples. You'll also study HTTP and HTTPS (the protocols responsible for web pages) from both the client and server perspective. To keep up with current trends, you'll apply the concepts covered in this book to gain insights into web programming for IoT. You'll even get to grips with network monitoring and implementing security best practices.
By the end of this book, you'll have experience of working with client-server applications, and be able to implement new network programs in C.
The code in this book is compatible with the older C99 version as well as the latest C18 and C++17 standards. Special consideration is given to writing robust, reliable, and secure code that is portable across operating systems, including Winsock sockets for Windows and POSIX sockets for Linux and macOS.What you will learnUncover cross-platform socket programming APIs
Implement techniques for supporting IPv4 and IPv6
Understand how TCP and UDP connections work over IP
Discover how hostname resolution and DNS work
Interface with web APIs using HTTP and HTTPS
Acquire hands-on experience with Simple Mail Transfer Protocol (SMTP)
Apply network programming to the Internet of Things (IoT)Who this book is forIf you're a developer or a system administrator who wants to enter the world of network programming, this book is for you. Basic knowledge of C programming is assumed.
Lewis Van Winkle is a software programming consultant, entrepreneur, and founder of a successful IoT company. He has over 20 years of programming experience after publishing his first successful software product at age 12. He has over 15 years of programming experience with the C programming language on a variety of operating systems and platforms. He is active in the open-source community and has published several popular open-source programs and libraries-many of them in C. Today, Lewis spends much of his time consulting, where he loves taking on difficult projects that other programmers have given up on. He specializes in network systems, financial systems, machine learning, and interoperation between different programming languages.Introducing Networks and Protocols
Getting to Grips with Socket APIs
An In-Depth Overview of TCP connections
Establishing UDP Connections
Hostname Resolution and DNS
Building a Simple Web Client
Building a Simple Web Server
Making Your Program Send Emails
Loading Secure Web Pages with HTTPS and OpenSSL
Implementing a Secure Web Server
Establishing SSH Connections
Network Monitoring and Security
Socket Programming Tips and Pitfalls
Web Programming for the Internet of Things
Answers to Questions
Setting Up Your C Compiler on Windows
Setting Up Your C Compiler on Linux
Setting Up Your C Compiler on macOS
Example Programs