As of my last update in September 2021, HTTP/3.0 had not been released. However, I can provide information based on the developments up to that time.
HTTP/3, also known as “Hypertext Transfer Protocol version 3,” is the upcoming iteration of the HTTP protocol, which is the foundation of data communication on the World Wide Web. HTTP/3 aims to improve upon its predecessor, HTTP/2, by incorporating the QUIC (Quick UDP Internet Connections) protocol developed by Google.
QUIC is a transport layer protocol that runs on top of UDP (User Datagram Protocol) instead of TCP (Transmission Control Protocol). This change is significant because TCP has been the standard transport protocol for HTTP since its inception. UDP offers reduced latency and better performance for certain types of connections, particularly in situations with high packet loss or unstable networks.
The primary goals of HTTP/3 are:
Faster and more reliable connections: QUIC’s support for multiplexed streams allows for reduced connection establishment times and improved error correction, resulting in better overall performance.
Improved security: HTTP/3 aims to address certain security issues present in earlier versions, such as “head-of-line blocking” attacks.
Enhanced connection migration: HTTP/3 should provide better support for transitioning connections between different networks or devices, such as moving from Wi-Fi to mobile data seamlessly.
Better handling of packet loss: With UDP’s connectionless nature, HTTP/3 can handle packet loss more effectively than TCP-based protocols.
It’s worth noting that since the development of protocols and standards often takes time, there might have been further updates or developments regarding HTTP/3 after my last update in September 2021. Therefore, I recommend checking more recent sources for the latest information on HTTP/3.