Python Web Development with Sanic

Chapter 3: Routing and Intaking HTTP Requests

Back in Chapter 1, Introduction to Sanic and Async Frameworks, we looked at a raw HTTP request to see what kind of information it includes. In this chapter, we are going to take a closer look at the first line, which contains the HTTP method and the URI path. As we learned, the most basic function of a web framework is to translate a raw HTTP request into an actionable handler. Before we see how we can implement this, it is good to keep in mind what raw requests look like:

POST /path/to/endpoint HTTP/1.1

Host: localhost:7777

User-Agent: curl/7.76.1

Accept: */*

Content-Length: 14

Content-Type: application/json

{"foo": "bar"}

Looking at the request, we see the following:

• The first line (sometimes ...