GitHub - microsoft/msquic: Cross-platform, C implementation of the IETF QUIC protocol.
MsQuic is a Microsoft implementation of the IETF QUIC protocol. It is cross-platform, written in C and designed to be a general purpose QUIC library. QUIC has many benefits when compared to existing "TLS over TCP" scenarios: All packets are encrypted and handshake is authenticated with TLS 1.3.
https://github.com/microsoft/msquic