That's the beauty of this nginx feature. Up until now, the easiest way to add websockets to an existing application was to put them on a separate (weird) port.

That's the beauty of this nginx feature. Up until now, the easiest way to add websockets to an existing application was to put them on a separate (weird) port. But now nginx lets you multiplex those websocket connections over good old port 80 or 443, while still supporting regular HTTP(S) on those ports at the same time.