Book Image

Hands-On Network Programming with C

By : Lewis Van Winkle
Book Image

Hands-On Network Programming with C

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 (26 chapters)
Title Page
About Packt

Chapter 14, Web Programming for the Internet of Things

  1. What are the drawbacks to using Wi-Fi connectivity?

Wi-Fi can be difficult for end user setup. It's also not available everywhere.

  1. What are the drawbacks to using Ethernet connectivity?

Many devices aren't used in areas where wiring has been run.

  1. What are the drawbacks to using cellular connectivity?

Cellular connectivity is expensive. It can also have increased latency and larger power requirements when compared to other methods.

  1. What are some advantages to using a single-board computer with embedded Linux? What are the drawbacks?

Having access to a full operating system, such as Linux, can simplify software development. However, Single-Board Computers (SBCs) are relatively expensive and offer few board-level connectivity options and peripherals when compared to microcontrollers. They also require lots of power, relatively speaking.

  1. What are some advantages to using a microcontroller in your IoT device?

Many IoT devices will need to use a microcontroller to provide their basic functionality anyway. Microcontrollers are cheap, offer a wide range of peripherals, are able to meet real-time performance constraints, and can run on very little power.

  1. Is the use of HTTPS always appropriate in IoT device communication?

HTTPS is a decent way to secure IoT communication for most applications; however, it has a lot of processing and bandwidth overhead. Each application is unique, and the security scheme used should be chosen based on your exact needs.