craftbeerpi3/venv/lib/python3.6/site-packages/eventlet/green/SocketServer.py

from eventlet import patcher

from eventlet.green import socket
from eventlet.green import select
from eventlet.green import threading
import six

patcher.inject(
    'SocketServer' if six.PY2 else 'socketserver',
    globals(),
    ('socket', socket),
    ('select', select),
    ('threading', threading))

# QQQ ForkingMixIn should be fixed to use green waitpid?