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Asynchronous Programming in Rust

You're reading from  Asynchronous Programming in Rust

Product type Book
Published in Feb 2024
Publisher Packt
ISBN-13 9781805128137
Pages 306 pages
Edition 1st Edition
Languages
Author (1):
Carl Fredrik Samson Carl Fredrik Samson
Profile icon Carl Fredrik Samson

Table of Contents (16) Chapters

Preface 1. Part 1:Asynchronous Programming Fundamentals
2. Chapter 1: Concurrency and Asynchronous Programming: a Detailed Overview 3. Chapter 2: How Programming Languages Model Asynchronous Program Flow 4. Chapter 3: Understanding OS-Backed Event Queues, System Calls, and Cross-Platform Abstractions 5. Part 2:Event Queues and Green Threads
6. Chapter 4: Create Your Own Event Queue 7. Chapter 5: Creating Our Own Fibers 8. Part 3:Futures and async/await in Rust
9. Chapter 6: Futures in Rust 10. Chapter 7: Coroutines and async/await 11. Chapter 8: Runtimes, Wakers, and the Reactor-Executor Pattern 12. Chapter 9: Coroutines, Self-Referential Structs, and Pinning 13. Chapter 10: Creating Your Own Runtime 14. Index 15. Other Books You May Enjoy

The main program

Let’s see how it all works in practice. Make sure that delayserver is up and running, because we’ll need it for these examples to work.

The goal is to send a set of requests to delayserver with varying delays and then use epoll to wait for the responses. Therefore, we’ll only use epoll to track read events in this example. The program doesn’t do much more than that for now.

The first thing we do is to make sure our main.rs file is set up correctly:

ch04/a-epoll/src/main.rs

use std::{io::{self, Read, Result, Write}, net::TcpStream};
use ffi::Event;
use poll::Poll;
mod ffi;
mod poll;

We import a few types from our own crate and from the standard library, which we’ll need going forward, as well as declaring our two modules.

We’ll be working directly with TcpStreams in this example, and that means that we’ll have to format the HTTP requests we make to our delayserver ourselves.

The server will accept...

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