TUIC

TUIC is a lightweight proxy protocol that multiplexes traffic over QUIC, offering low handshake latency and native UDP relay. Version 5, the one deployed today, authenticates with a UUID and optional password and exposes congestion-control and UDP relay modes as URI parameters. Its small codebase and simple configuration made it popular for self-hosted setups. TUIC requires UDP reachability, like other QUIC-based protocols.