Book Image

Python Web Development with Sanic

By : Adam Hopkins
Book Image

Python Web Development with Sanic

By: Adam Hopkins

Overview of this book

Today’s developers need something more powerful and customizable when it comes to web app development. They require effective tools to build something unique to meet their specific needs, and not simply glue a bunch of things together built by others. This is where Sanic comes into the picture. Built to be unopinionated and scalable, Sanic is a next-generation Python framework and server tuned for high performance. This Sanic guide starts by helping you understand Sanic’s purpose, significance, and use cases. You’ll learn how to spot different issues when building web applications, and how to choose, create, and adapt the right solution to meet your requirements. As you progress, you’ll understand how to use listeners, middleware, and background tasks to customize your application. The book will also take you through real-world examples, so you will walk away with practical knowledge and not just code snippets. By the end of this web development book, you’ll have gained the knowledge you need to design, build, and deploy high-performance, scalable, and maintainable web applications with the Sanic framework.
Table of Contents (16 chapters)
Part 1:Getting Started with Sanic
Part 2:Hands-On Sanic
Part 3:Putting It All together

Chapter 7: Dealing with Security Concerns

When you're building a web application, it may be very tempting to sit down, plan out your functionality, build it, test it, and only then come back to think about security. For example, when you're building a single-page application (SPA), you may not even consider CORS until the first time you see this message in the browser while testing:

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at $somesite.

To a large extent, this is how we have been building in this book. We see a feature and build it. Anytime we have come across a potential security issue in this book, we have pushed it to a later date. Finally, we are at the point where we will learn how to deal with security issues in Sanic. The topic of web security is, of course, extremely broad, and it is beyond the scope of this book to provide an exhaustive study.

Instead, in this chapter, we will cover the following topics:...