> how would something like a data-diode work in real life? The ones I have worked with convert a TCP stream to UDP, send it across the diode, and then convert

> how would something like a data-diode work in real life? The ones I have worked with convert a TCP stream to UDP, send it across the diode, and then convert it back to TCP. Each UDP packet has a sequence number and there is a single reverse-diode that is fired when a packet is missed or arrives out of order that triggers a retransmission of the last N packets.