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Hands-On Network Programming with C

Hands-On Network Programming with C

By : Lewis Van Winkle
4.5 (30)
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Hands-On Network Programming with C

Hands-On Network Programming with C

4.5 (30)
By: Lewis Van Winkle

Overview of this book

Network programming enables processes to communicate with each other over a computer network, but it is a complex task that requires programming with multiple libraries and protocols. With its support for third-party libraries and structured documentation, C is an ideal language to write network programs. Complete with step-by-step explanations of essential concepts and practical examples, this C network programming book begins with the fundamentals of Internet Protocol, TCP, and UDP. You’ll explore client-server and peer-to-peer models for information sharing and connectivity with remote computers. The book will also cover HTTP and HTTPS for communicating between your browser and website, and delve into hostname resolution with DNS, which is crucial to the functioning of the modern web. As you advance, you’ll gain insights into asynchronous socket programming and streams, and explore debugging and error handling. Finally, you’ll study network monitoring and implement 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. You’ll work with robust, reliable, and secure code that is portable across operating systems, including Winsock sockets for Windows and POSIX sockets for Linux and macOS.
Table of Contents (25 chapters)
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1
Section 1 - Getting Started with Network Programming
7
Section 2 - An Overview of Application Layer Protocols
11
Section 3 - Understanding Encrypted Protocols and OpenSSL
15
Section 4 - Odds and Ends

To get the most out of this book

The reader is expected to be proficient in the C programming language. This includes a familiarity with memory management, the use of pointers, and basic data structures.

A Windows, Linux, or macOS development machine is recommended; you can refer to the appendices for setup instructions.

This book takes a hands-on approach to learning and includes 44 example programs. Working through these examples as you read the book will help enforce the concepts.

The code for this book is released under the MIT open source license. The reader is encouraged to use, modify, improve, and even publish their changes to these example programs.

Download the example code files

You can download the example code files for this book from your account at www.packt.com. If you purchased this book elsewhere, you can visit www.packt.com/support and register to have the files emailed directly to you.

The code bundle for the book is also publicly hosted on GitHub at https://github.com/codeplea/hands-on-network-programming-with-cIn case there's an update to the code, it will be updated on that GitHub repository. Each chapter that introduces example programs begins with the commands needed to download the book's code.

Download the color images

Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, variable names, function names, directory names, filenames, file extensions, pathnames, URLs, and user input. Here is an example: "Use the select() function to wait for network data."

A block of code is set as follows:

/* example program */

#include <stdio.h>
int main() {
printf("Hello World!\n");
return 0;
}

Any command-line input or output is written as follows:

gcc hello.c -o hello
./hello

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Select System info from the Administration panel."

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