TCP async

This is a simple implementation of asynchronous web server based on TCP socket programming.

I've coded it mostly to figure out how asynchronicity works under the hood.

Structure

The web server is implemented in 4 ways (each file corresponds to its server type):

• base_server.py - synchronous server. Only one connection can be processed at time.

• async_server_selectsyscall.py - asynchronous server. Asynchronicity is achieved by using select() system call.

• async_server_threading.py - asynchronous server. Asynchronicity is achieved by using threading Python module.

• async_server_generators.py - asynchronous server. Asynchronicity is achieved by using Python generators and select() system call.

Usage

Simply run a python file:

python3 async_server_selectsyscall.py

The will run on localhost:8000 by default. You can interact with it using any network tool that supports TCP connection, e.g. netcat:

nc localhost 8000

Demo

Base (synchronous) server:

Asynchronous server (generators implementation):