Hello,
The backend for HTTP/3 and QUIC called "OpenSSL QUIC" is still marked as
experimental.
There is just this single documented requirement left for this backend to
"graduate":
- Using HTTP/3 with the given build should perform without risking busy-loops
There is a PR [1] now that aims to fix this issue. The downside is that it
does not seem to improve performance at all.
The OpenSSL QUIC backend has some distinct drawbacks:
Upload speed: ngtcp2 is 2-4x faster.
Memory use: in some tests, OpenSSL uses 25x the amount of memory.
... but are those reasons enough for us to remain calling it experimental? I
lean towards "no". To let users decide for themselves if they want fast or
slow transfers.
[1] = https://github.com/curl/curl/pull/15909
--
/ daniel.haxx.se || https://rock-solid.curl.dev
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