Book Image

The Go Workshop

By : Delio D'Anna, Andrew Hayes, Sam Hennessy, Jeremy Leasor, Gobin Sougrakpam, Dániel Szabó
Book Image

The Go Workshop

By: Delio D'Anna, Andrew Hayes, Sam Hennessy, Jeremy Leasor, Gobin Sougrakpam, Dániel Szabó

Overview of this book

The Go Workshop will take the pain out of learning the Go programming language (also known as Golang). It is designed to teach you to be productive in building real-world software. Presented in an engaging, hands-on way, this book focuses on the features of Go that are used by professionals in their everyday work. Each concept is broken down, clearly explained, and followed up with activities to test your knowledge and build your practical skills. Your first steps will involve mastering Go syntax, working with variables and operators, and using core and complex types to hold data. Moving ahead, you will build your understanding of programming logic and implement Go algorithms to construct useful functions. As you progress, you'll discover how to handle errors, debug code to troubleshoot your applications, and implement polymorphism using interfaces. The later chapters will then teach you how to manage files, connect to a database, work with HTTP servers and REST APIs, and make use of concurrent programming. Throughout this Workshop, you'll work on a series of mini projects, including a shopping cart, a loan calculator, a working hours tracker, a web page counter, a code checker, and a user authentication system. By the end of this book, you'll have the knowledge and confidence to tackle your own ambitious projects with Go.
Table of Contents (21 chapters)
Free Chapter
1. Variables and Operators
2. Logic and Loops


When you are developing a web application, it is important to know how to secure your information in transit. This is achieved by using a Transport Layer Security Protocol, commonly known as TLS. The standard Go library provides a TLS implementation under the crypto/tls package. The TLS protocol ensures:

Identity: Provides both client and server identification using digital certificates.

Integrity: Makes sure that data is not tampered with in transit by calculating a message digest.

Authentication: Both client and server can be required to be authenticated using Public-Key Cryptography.

Confidentiality: The message is encrypted during transit, thus protecting it from any unintended recipient.

In the following topic, we'll see how to use certificates to encrypt traffic between a client and a server.

The first step to encrypting traffic between a client and a server is to generate a digital certificate.

In the next exercise, we will generate a self...