Migrate chat to async way

[jeffhsta]

I want to rise a discussion about refactor our app to program in asynchronous way.

Since we are using Python 3.4 and just Python 3.5 will came with async syntax sugar, I am proposing to use Twisted

https://twistedmatrix.com/trac/

I want to know the team opinion about that.
@ruanLN @Dkmister @mateusriad @leormarqs @pfvscheffer

[ruanLN]

I think it'll add unnecessary complexity to the project, maybe a synchronous approach using select command to iterate among the sockets give a similar readability/efficiency, without the async programming headache

[jeffhsta]

@ruanLN Ok, your point make totally sense to me.

Lets continue on our current approach. I have to take a look in this "select" if there is possible, share some content about it with the team.

[ruanLN]

@jeffhsta take a look in client.py#16,
here I use the select to switch between stdin and the server socket, the select command return a list of io_devices with bytes ready to read, then you can iterate over this list.
the main diference for the server side is that you'll add a socket in socket_list for each connected client.
This package supports a lot of other things not so interesting for us right now: select.