Hello everyone I'm Aditya, a student at IIIT Delhi, India. I was looking into QUIC protocol and have a query about its connection establishment. I noticed that browsers start connections over TCP initially, and if the server advertises QUIC support in the *alt-svc* header, then only a QUIC connection attempt is made. However, considering QUIC is an improved protocol over TCP, why do we not initially try QUIC first, and if it fails (due to the server not supporting it or firewall blocking UDP), move back to TCP?
Regards Aditya
