UDP and nothing layered on top? Then you'll be reimplementing host discovery (i.e. how do clients find the host that has context on their request), retransmiss

UDP and nothing layered on top? Then you'll be reimplementing host discovery (i.e. how do clients find the host that has context on their request), retransmissions, flow control, congestion control, and many other things on top of it, and suddenly it doesn't sound so simple anymore.