What is WebSocket used for?

websockets is a library for building WebSocket servers and clients in Python with a focus on correctness, simplicity, robustness, and performance . Built on top of asyncio , Python’s standard asynchronous I/O framework, it provides an elegant coroutine-based API.

The WebSocket API is an advanced technology that makes it possible to open a two-way interactive communication session between the user’s browser and a server . With this API, you can send messages to a server and receive event-driven responses without having to poll the server for a reply.

Django Channels facilitates support of WebSockets in Django in a manner similar to traditional HTTP views. It wraps Django’s native asynchronous view support, allowing Django projects to handle not only HTTP, but also protocols that require long-running connections, such as WebSockets, MQTT, chatbots, etc.1 Mar 2021