Async socket server and ports

[DeaD_EyE]

With a trick the developers made asynchronous code looking like synchronous code.
They use generators with the send function, which allows to delegate everything.

It's a combination of:

• DefaultSelector, which uses select, epoll and other os related selectors for sockets
  
• Generators (await was before yield from, async was previously a normal generator with a yield statement used with send from outside)
  
• EventLoop, which is asyncio.run_forever()
  

If you want to dig deeper in asyncio, you should watch some talks on YouTube.
Some of them are explaining it very deep.