quic科普

 

Does my browser support HTTP/3 & QUIC?

When loading this page from Cloudflare's edge network, your browser used HTTP/2.

This page is HTTP/3 & QUIC enabled. Try reloading a few times to spring it into action.

Not all HTTP clients have HTTP/3 & QUIC support configured. See our documentation for more information about how to check and configure your favorite client such as Chrome, Firefox or curl.

New to QUIC?

QUIC is a new transport protocol being developed in the Internet Engineering Task Force (IETF). It offers reliability, security and multiplexing by default.

HTTP/3 is a new version of HTTP that sits on top of QUIC. It leverages the new transport features to fix performance problems such as Head-of-Line blocking. This enables web pages to load faster, especially over troublesome networks.

If you’re new to QUIC and need to learn more about the protocol, the following resources will help you gain a better understanding.

• HTTP/3: the past, present, and the future
• HTTP/3: From root to tip blog
• The QUICening blog
• Get a head start with QUIC blog
• Road to QUIC blog
• QUIC implementations repository
• IETF standard working group

Faster handshakes

QUIC handshakes are faster by design when compared to the equivalent TCP & TLS.

Since QUIC uses TLS 1.3, it can benefit from zero roundtrip time (0-RTT) connection resumption. Check out our 0-RTT blogpost to understand more about this feature.

Continuing developments

Cloudflare will continue to make updates to its QUIC implementation as the IETF makes progress towards finalizing the protocol standard.

Since launching QUIC & HTTP/3 support we've continued to measure performance and deploy optimisations such as new Congestion Control algorithms.

from https://cloudflare-quic.com/