Book Image

Rust Web Programming - Second Edition

By : Maxwell Flitton
Book Image

Rust Web Programming - Second Edition

By: Maxwell Flitton

Overview of this book

Are safety and high performance a big concern for you while developing web applications? With this practical Rust book, you’ll discover how you can implement Rust on the web to achieve the desired performance and security as you learn techniques and tooling to build fully operational web apps. In this second edition, you’ll get hands-on with implementing emerging Rust web frameworks, including Actix, Rocket, and Hyper. It also features HTTPS configuration on AWS when deploying a web application and introduces you to Terraform for automating the building of web infrastructure on AWS. What’s more, this edition also covers advanced async topics. Built on the Tokio async runtime, this explores TCP and framing, implementing async systems with the actor framework, and queuing tasks on Redis to be consumed by a number of worker nodes. Finally, you’ll go over best practices for packaging Rust servers in distroless Rust Docker images with database drivers, so your servers are a total size of 50Mb each. By the end of this book, you’ll have confidence in your skills to build robust, functional, and scalable web applications from scratch.
Table of Contents (27 chapters)
Free Chapter
Part 1:Getting Started with Rust Web Development
Part 2:Processing Data and Managing Displays
Part 3:Data Persistence
Part 4:Testing and Deployment
Part 5:Making Our Projects Flexible
Part 6:Exploring Protocol Programming and Async Concepts with Low-Level Network Applications

Utilizing framing

So far, we are sending structs over TCP and separating these messages with a new line. Essentially, this is the most basic form of framing. However, there are some drawbacks. We must remember to put in a delimiter such as a new line; otherwise, our program will hang indefinitely. We also run the risk of prematurely splitting the message into two messages by having a delimiter in the data of the message. For instance, when we split our messages up with the new line delimiter, it is not inconceivable to have a chunk of text in a message that has new lines or any special character or byte to denote the need to separate the stream into serializable packages. To prevent such issues, we can use the built-in framing support that Tokio provides.

In this section, we will be rewriting the client and server as the sending and receiving of messages will change. If we try and insert our new approach into existing code of the client, it can easily lead to confusion. Before we...