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)

Introduction to SMTP

Internet email uses a protocol called Simple Mail Transfer Protocol (SMTP), which is an IETF standard. Much like HTTP, it is a simple text protocol over TCP, using port 25 by default. In this section, we will look at a small example of using lettre for sending emails. For this to work, let us set up our project first:

$ cargo new --bin lettre-example

Now, our Cargo.toml file should look like this:

$ cat Cargo.toml
name = "lettre-example"
version = "0.1.0"
authors = ["Foo<[email protected]>"]

lettre = "0.7"
uuid = "0.5.1"
native-tls = "0.1.4"

Let's say we want to send crash reports for a server automatically. For this to work, we need to have an SMTP server running somewhere accessible. We also need to have a user who can authenticate using a password set up on that server. Having...