> I’m pretty sure I’ll never understand QUIC completely in my lifetime. Do you understand how to build TCP packets by hand? A lot of the confusion between QUIC

> I’m pretty sure I’ll never understand QUIC completely in my lifetime. Do you understand how to build TCP packets by hand? A lot of the confusion between QUIC and HTTP/3 is intentional because it is somewhat merging the layers that used to be entirely separate. All the examples elsewhere of "I can telnet/netcat to an HTTP/1.1 server and mostly do the thing" avoid the obvious fact that telnet/netcat is still doing all the work of splitting the messages into TCP packets and following TCP rules. Presumably QUIC and HTTP/3 are separate enough to still warrant the idea of a telnet/netcat for QUIC taking care of the low level details and then you could try to write HTTP/3 on top of those apps a little easier, in a similar fashion. Though maybe not, without the rich history of telnet-related protocols on top of TCP and HTTP/3 still currently the only protocol targeting QUIC today.