Running the game and lobby server under a path in an express app

[customautosys]

Hi, I'm using Quasar Framework SSR https://quasar.dev/quasar-cli-vite/developing-ssr/ssr-middleware. It uses Express middleware.

Does anyone know if it is possible to run the koa app as an Express middleware on a path within my existing app? I read here that it's possible to just use app.callback(): koajs/koa#846

Is it possible to start the game and lobby server without a port? I do not need it to listen on any port because the requests should just be passed through from Express.