5 ms·

HTTP is backwards compatible

• CharlesW 4y ago
  It's not. There's a negotiation process, but you can't use HTTP/3 to deliver content to a client that doesn't support it. "HTTP/3 uses QUIC instead of TCP for the underlying transport protocol. Like HTTP/2, it does not obsolesce previous major versions of the protocol." - https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol