Book Image

Mastering Node.js - Second Edition

By : Sandro Pasquali, Kevin Faaborg
Book Image

Mastering Node.js - Second Edition

By: Sandro Pasquali, Kevin Faaborg

Overview of this book

Node.js, a modern development environment that enables developers to write server- and client-side code with JavaScript, thus becoming a popular choice among developers. This book covers the features of Node that are especially helpful to developers creating highly concurrent real-time applications. It takes you on a tour of Node's innovative event non-blocking design, showing you how to build professional applications. This edition has been updated to cover the latest features of Node 9 and ES6. All code examples and demo applications have been completely rewritten using the latest techniques, introducing Promises, functional programming, async/await, and other cutting-edge patterns for writing JavaScript code. Learn how to use microservices to simplify the design and composition of distributed systems. From building serverless cloud functions to native C++ plugins, from chatbots to massively scalable SMS-driven applications, you'll be prepared for building the next generation of distributed software. By the end of this book, you'll be building better Node applications more quickly, with less code and more power, and know how to run them at scale in production environments.
Table of Contents (13 chapters)

Serving static files

Anyone using Node to create a web server will need to respond intelligently to HTTP requests. An HTTP request to a web server for a resource expects some sort of response. A basic file static file server might look like this:

http.createServer((request, response) => { 
if(request.method !== "GET") {
return response.end("Simple File Server only does GET");
}
fs
.createReadStream(__dirname + request.url)
.pipe(response);
}).listen(8000);

This server services GET requests on port 8000, expecting to find a local file at a relative path equivalent to the URL path segment. We see how easy Node makes it for us to stream local file data, simply piping a ReadableStream into a WritableStream representing a client socket connection. This is an enormous amount of functionality to be safely implemented in a handful of lines.

Eventually...