What protocol do you use to organize client-server interaction?

The HTTP (HyperText Transfer Protocol) is most commonly used for organizing client-server interactions. It is the foundation of web communications and supports requests and responses between the client and server.

In Python, standard libraries such as http.client or more convenient third-party libraries like requests can be used for working with HTTP.

Example of a simple GET request using requests:

import requests

response = requests.get('https://api.example.com/data')
if response.status_code == 200:
    print(response.json())
else:
    print('Request error:', response.status_code)

For more complex interactions, protocols like WebSocket, gRPC, and others can be used, but HTTP remains the basic and most common protocol.