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

Building the HTTP server

For our HTTP server, we need to carry out the following steps:

  1. Define a struct that deserializes the HTTP request body.
  2. Define a function that handles the incoming request.
  3. Define pathways for the program to run based on environment variables.
  4. Run a server that listens for incoming requests.

We are not going to section off individual sections for each step as we have covered all of these steps/processes in the previous chapter. Before we carry out all the steps, we must import the following into the src/ file:

use hyper::{Body, Request, Response, Server};
use hyper::body;
use hyper::service::{make_service_fn, service_fn};
use std::net::SocketAddr;
use std::env;
use serde::{Serialize, Deserialize};
use serde_json;
use bytes::{BufMut, BytesMut};

You should be familiar with all these imports apart from the bytes import, which we will cover when defining the HTTP handle function. First, we will define a trivial struct...