Frequently Asked Questions on QUIC and HTTP/3
How does QUIC differ from TCP?
QUIC is more resilient to network changes than TCP because it employs connection IDs that are independent of IP addresses and ports. In addition, QUIC is more secure than TCP because it encrypts not just the data, but also the headers.
What happens if QUIC is blocked?
When it is blocked, QUIC provides an emergency mechanism that allows it to fall back to TCP. This allows SSL inspection without affecting user experience.
How can I enable QUIC and HTTP/3 on my server?
To enable QUIC and HTTP/3 on your server, you must first setup your web server software (such as nginx or Apache) to handle these protocols. Additionally, you may need to check that your server’s network infrastructure allows UDP communication on the correct ports.
Is QUIC open source?
The LiteSpeed QUIC Library is an open-source implementation of QUIC with HTTP/3 features for servers and clients .
Why is QUIC better than TCP?
QUIC creates connections faster than TCP because it eliminates the round-trip time with a 0-RTT handshake. Another advantage of QUIC over TCP is its greater robustness to network changes due to connection IDs that are not dependent on IP addresses or ports.
What is QUIC and HTTP/3?
HTTP is the backbone of the Internet, controlling how communication devices exchange information and access resources. In simple terms, it allows consumers to load websites. HTTP/3 is a new standard under development that will change how online browsers and servers communicate, with major enhancements to user experience, including performance, reliability, and security.