Book Image

Mastering Go - Second Edition

By : Mihalis Tsoukalos
Book Image

Mastering Go - Second Edition

By: Mihalis Tsoukalos

Overview of this book

Often referred to (incorrectly) as Golang, Go is the high-performance systems language of the future. Mastering Go, Second Edition helps you become a productive expert Go programmer, building and improving on the groundbreaking first edition. Mastering Go, Second Edition shows how to put Go to work on real production systems. For programmers who already know the Go language basics, this book provides examples, patterns, and clear explanations to help you deeply understand Go’s capabilities and apply them in your programming work. The book covers the nuances of Go, with in-depth guides on types and structures, packages, concurrency, network programming, compiler design, optimization, and more. Each chapter ends with exercises and resources to fully embed your new knowledge. This second edition includes a completely new chapter on machine learning in Go, guiding you from the foundation statistics techniques through simple regression and clustering to classification, neural networks, and anomaly detection. Other chapters are expanded to cover using Go with Docker and Kubernetes, Git, WebAssembly, JSON, and more. If you take the Go programming language seriously, the second edition of this book is an essential guide on expert techniques.
Table of Contents (20 chapters)
Title Page

Doing low-level network programming

Although the http.Transport structure allows you to modify the various low-level parameters of a network connection, you can write Go code that permits you to read the raw data of network packets.

There are two tricky points here. Firstly, network packets come in binary format, which requires you to look for specific kinds of network packets and not just any type of network packet. Put simply, when reading network packets, you should specify the protocol or protocols that you are going to support in your applications in advance. Secondly, in order to send a network packet, you will have to construct it on your own.

The next utility to be shown is called lowLevel.go, and it will be presented in three parts. Notice that lowLevel.go captures Internet Control Message Protocol (ICMP) packets, which use the IPv4 protocol and print their contents. Also...