udp

10 Nov 2026 · redes, linux, tcp, udp · 4 min

TCP and UDP in practice: when the difference shows

TCP resends what was lost, UDP does not. With 5% simulated loss, TCP took 5.6 s instead of 2.0 s with 5 to 7 retransmissions; UDP lost 4.5% of packets and finished in 2.0 s. Reproducible script included.