asyncio_http_server.py

@asyncio.coroutine
def init(loop, address, port):
  """Yield a server for event loop to drive"""
  app = aiohttp.web.Application(loop=loop)
  # you should consider make `home` a corutine to prevent blocking
  app.router.add_route('GET', '/', home)
  handler = app.make_handler()
  # create_server brings up the server, using handler as the protocol handler and binding it to address and port
  server = yield from loop.create_server(handler, address, port)
  retrun server.sockets[0].getsockname()
  
def main(address='127.0.0.1', port=8888):
  port = int(port)
  loop = asyncio.get_event_loop()
  host = loop.run_until_complete(init(loop, address, port))
  print(f'Serving on {host}. Hit CTRL-C to stop')
  try:
    loop.run_forever()
  except KeyboardInterrupt:
    pass
  print('Server shutting down.')
  loop.close()