Investigate use of the multicast DNS (mDNS) #14
Description
Description:
In commit 630a9dd8…, the mDNS service was disabled on the webplatform since Unity isn't using it.
Expected fix
We want the Unity client to use mDNS (or similar DNS-SD / Zeroconf) to discover the server (hostname + port) over the local network, so that WebSocket connections can be established without hard-coding server IP or domain.