Book Image

Network Programming with Rust

By : Abhishek Chanda
Book Image

Network Programming with Rust

By: Abhishek Chanda

Overview of this book

Rust is low-level enough to provide fine-grained control over memory while providing safety through compile-time validation. This makes it uniquely suitable for writing low-level networking applications. This book is divided into three main parts that will take you on an exciting journey of building a fully functional web server. The book starts with a solid introduction to Rust and essential networking concepts. This will lay a foundation for, and set the tone of, the entire book. In the second part, we will take an in-depth look at using Rust for networking software. From client-server networking using sockets to IPv4/v6, DNS, TCP, UDP, you will also learn about serializing and deserializing data using serde. The book shows how to communicate with REST servers over HTTP. The final part of the book discusses asynchronous network programming using the Tokio stack. Given the importance of security for modern systems, you will see how Rust supports common primitives such as TLS and public-key cryptography. After reading this book, you will be more than confident enough to use Rust to build effective networking software
Table of Contents (11 chapters)

A Simple UDP server and client

There are a few semantic differences between the UDP server and the TCP server we wrote earlier. Unlike TCP, UDP does not have a stream structure. This derives from the semantic differences between the two protocols. Let's take a look at what a UDP server might look like:

// chapter3/

use std::thread;
use std::net::UdpSocket;

fn main() {
let socket = UdpSocket::bind("")
.expect("Could not bind socket");

loop {
let mut buf = [0u8; 1500];
let sock = socket.try_clone().expect("Failed to clone socket");
match socket.recv_from(&mut buf) {
Ok((_, src)) => {
thread::spawn(move || {
println!("Handling connection from {}", src);
sock.send_to(&buf, &src)