Sync frames using gevent events

import os

import shutil

import threading

import gevent.event

import datetime

import logging

            # this is a new client

            # add an entry for it in the self.events dict

            # each entry has two elements, a threading.Event() and a timestamp

            self.events[ident] = [threading.Event(), time.time()]

            self.events[ident] = [gevent.event.Event(), time.time()]

        return self.events[ident][0].wait(timeout)

    def set(self):