Most of today’s transport on the public Internet still uses TCP (and in this admittedly sweeping generalization I’ll include QUIC, as QUIC can be seen as an updated form of TCP that happens to use UDP as an encapsulation protocol). TCP does not operate at a fixed transmission rate and instead the protocol uses a feedback loop between the sender and receiver to maintain a suitable rate that makes efficient use of the network while avoiding driving the network into conditions of sustained o...