luo980/curl
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

http3.md: mention how the fallback can be h1 or h2

Browse Source 
Closes #14736
This commit is contained in:
Daniel Stenberg 2024-08-30 09:04:15 +02:00
parent 98395155d7
commit 22a6a0bc6b
No known key found for this signature in database
GPG Key ID: 5CC908FDB71E12C2
1 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
docs/cmdline-opts/http3.md
View File

@ -20,14 +20,16 @@ Example:
# `--http3` # `--http3`
Attempt HTTP/3 to the host in the URL, but fallback to earlier HTTP versions Attempt HTTP/3 to the host in the URL, but fallback to earlier HTTP versions
if the HTTP/3 connection establishment fails. HTTP/3 is only available for if the HTTP/3 connection establishment fails or is slow. HTTP/3 is only
HTTPS and not for HTTP URLs. available for HTTPS and not for HTTP URLs.
This option allows a user to avoid using the Alt-Svc method of upgrading to This option allows a user to avoid using the Alt-Svc method of upgrading to
HTTP/3 when you know that the target speaks HTTP/3 on the given host and port. HTTP/3 when you know or suspect that the target speaks HTTP/3 on the given
host and port.
When asked to use HTTP/3, curl issues a separate attempt to use older HTTP When asked to use HTTP/3, curl issues a separate attempt to use older HTTP
versions with a slight delay, so if the HTTP/3 transfer fails or is slow, curl versions with a slight delay, so if the HTTP/3 transfer fails or is slow, curl
still tries to proceed with an older HTTP version. still tries to proceed with an older HTTP version. The fallback performs the
regular negoatiaion between HTTP/1 and HTTP/2.
Use --http3-only for similar functionality *without* a fallback. Use --http3-only for similar functionality *without* a fallback.