Engineers announce QUIC protocol completes RFC 9000 release

According to foreign media, the Internet Engineering Task Force (IETF) has released RFC 9000, which is supported by RFC 9001/9002/8999, which means that QUIC has moved from the draft stage to the official version 1.0. At the same time, HTTP/3 based on QUIC is also expected to be released soon. As the successor of the Transmission Control Protocol (TDP), the fast UDP Internet connection QUIC has the characteristics of security, reliability, and low latency.

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TCP is a connection-oriented, reliable, byte-stream-based transport layer communication protocol defined by IETF's RFC 793, designed to adapt to a layered protocol hierarchy that supports multi-network applications. Pairs of processes in host computers connected to different but interconnected computer communication networks rely on TCP for reliable communication services. TCP assumes that it can get simple, possibly unreliable datagram services from lower-level protocols. In principle, TCP should be able to operate on a variety of communication systems from hard-wired connections to packet switching or circuit switching networks.

The TCP/IP protocol suite is the foundation of the Internet. The transport layer protocols include TCP and UDP. Compared with the TCP protocol, UDP is lighter, but has much less error checking. This means that UDP is often more efficient (it does not communicate with the server frequently to check whether the data packets are delivered or in order), but its reliability is not as good as TCP. Usually, applications such as games, streaming media, and VoIP use UDP, while most applications such as web pages, emails, and remote logins use TCP. QUIC is a low-latency Internet transport layer protocol based on UDP developed by Google, which solves the various requirements faced by today's transport layer and application layer, including handling more connections, security, and low latency.