How to use the uvicorn.protocols.http function in uvicorn

def run_server(app):
    asyncio.set_event_loop(None)
    loop = asyncio.new_event_loop()
    protocol = functools.partial(http.HttpProtocol, consumer=app, loop=loop)
    create_server_task = loop.create_server(protocol, host='127.0.0.1')
    server = loop.run_until_complete(create_server_task)
    url = 'ws://127.0.0.1:%d/' % server.sockets[0].getsockname()[1]
    try:
        # Run the event loop in a new thread.
        threading.Thread(target=run_loop, args=[loop]).start()
        # Return the contextmanager state.
        yield url
    finally:
        # Close the loop from our main thread.
        loop.call_soon_threadsafe(loop.stop)

async def create_server(self, loop, app, host, port):
        protocol = functools.partial(http.HttpProtocol, consumer=app, loop=loop)
        server = await loop.create_server(protocol, host=host, port=port)
        self.servers.append(server)

async def tick(self, loop):

        while self.alive:
            http.set_time_and_date()
            await asyncio.sleep(1)

        logger.warning("Stopping worker [{}]".format(os.getpid()))

        for server in self.servers:
            server.close()
            await server.wait_closed()

        loop.stop()

def get_status_line(status_code):
    try:
        phrase = http.HTTPStatus(status_code).phrase.encode()
    except ValueError:
        phrase = b''
    return b''.join([
        b'HTTP/1.1 ', str(status_code).encode(), b' ', phrase, b'\r\n'
    ])