Tornado: Blocked on asyncio.sleep

[pedrokiefer]

When running this code, it seems that I'm unable to open multiple simultaneous connections to the server. Maybe tornado is blocked on the asyncio.sleep()? Is this behaviour expected?

I've tested this on 5.0.1, 5.1 and master.

class MainHandler(tornado.web.RequestHandler):

    async def get(self):
        sleep = random.randrange(10)
        logger.info('REQUEST will sleep for {}'.format(sleep))
        await asyncio.sleep(sleep)
        logger.info('woke up')
        self.write('Ok')

def main():
    logging_setup()
    tornado.platform.asyncio.AsyncIOMainLoop().install()
    application = tornado.web.Application([
        (r"/", MainHandler),
    ])
    application.listen(8000)
    tornado.ioloop.IOLoop.current().start()

[ploxiln]

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