Using Tornado server for aiohttp app

[wilberh]

Is there a Tornado class intended to let an aiohttp app run on the Tornado HTTP server and I/O loop?
I searched the docs but couldn't find anything there.

[bdarnell]

Tornado just uses the asyncio event loop, so you could run an aiohttp server on one port and a Tornado http server on a second port, both using the same asyncio event loop (and then you could combine them on one port for external visibility via an external reverse proxy). There is not currently any way that I'm aware of to combine aiohttp and Tornado apps on one port. The most likely way this would be done is with ASGI, which is tracked in #2666.