Book Image

Hands-On System Programming with Go

By : Alex Guerrieri
Book Image

Hands-On System Programming with Go

By: Alex Guerrieri

Overview of this book

System software and applications were largely created using low-level languages such as C or C++. Go is a modern language that combines simplicity, concurrency, and performance, making it a good alternative for building system applications for Linux and macOS. This Go book introduces Unix and systems programming to help you understand the components the OS has to offer, ranging from the kernel API to the filesystem. You'll then familiarize yourself with Go and its specifications. You'll also learn how to optimize input and output operations with files and streams of data, which are useful tools in building pseudo-terminal applications. You'll gain insights into how processes communicate with each other, and learn about processes and daemon control using signals, pipes, and exit codes. This book will also enable you to understand how to use network communication using various protocols, including TCP and HTTP. As you advance, you'll focus on Go's best feature - concurrency, which will help you handle communication with channels and goroutines, other concurrency tools to synchronize shared resources, and the context package to write elegant applications. By the end of this book, you will have learned how to build concurrent system applications using Go
Table of Contents (24 chapters)
Free Chapter
Section 1: An Introduction to System Programming and Go
Section 2: Advanced File I/O Operations
Section 3: Understanding Process Communication
Section 4: Deep Dive into Concurrency
Section 5: A Guide to Using Reflection and CGO


In this chapter, we examined how network connections are handled in Go. We started with some network standards. First, we discussed the OSI model, and then TCP/IP.

Then, we checked the network package and learned how to use it to create and manage TCP connections. This included the handling of special commands and how to terminate the connection from the server side. Next, we saw how to do the same with UDP, and we have seen how to implement a custom encoding with checksum control.

Then, we discussed the HTTP protocol, explained how the first version works, and then talked about the differences and improvements of HTTP/2. Then, we learned how to make an HTTP request using Go, followed by how to set up a web server. We explored how to serve existing files, how to associate different actions to different HTTP methods, and how to handle multipart requests and file uploads...