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Diffstat (limited to 'docs/cmdline-opts/http3-only.md')
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diff --git a/docs/cmdline-opts/http3-only.md b/docs/cmdline-opts/http3-only.md new file mode 100644 index 000000000..c565f8b95 --- /dev/null +++ b/docs/cmdline-opts/http3-only.md @@ -0,0 +1,32 @@ +--- +c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. +SPDX-License-Identifier: curl +Long: http3-only +Tags: Versions +Protocols: HTTP +Added: 7.88.0 +Mutexed: http1.1 http1.0 http2 http2-prior-knowledge http3 +Requires: HTTP/3 +Help: Use HTTP v3 only +Category: http +Multi: mutex +See-also: + - http1.1 + - http2 + - http3 +Example: + - --http3-only $URL +--- + +# `--http3-only` + +Instructs curl to use HTTP/3 to the host in the URL, with no fallback to +earlier HTTP versions. HTTP/3 can only be used for HTTPS and not for HTTP +URLs. For HTTP, this option triggers an error. + +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. + +This option makes curl fail if a QUIC connection cannot be established, it +does not attempt any other HTTP versions on its own. Use --http3 for similar +functionality *with* a fallback. |