import asyncio
from aiohttp import web
import json

@asyncio.coroutine
def get_user_data(request):
    return web.Response(body = 'Get user data')

app = web.Application()
app.router.add_route('*', '/', get_user_data)


loop = asyncio.get_event_loop()
handler = app.make_handler()
f = loop.create_server(handler, '127.0.0.1', 8888)
server = loop.run_until_complete(f)

print('Serving on', server.sockets[0].getsockname())

try:
    loop.run_forever()
except KeyboardInterrupt:
    print("serving off...")
finally:
    loop.run_until_complete(handler.finish_connections(1.0))
    server.close()
    loop.run_until_complete(server.wait_closed())

loop.close()