diff mupdf-source/thirdparty/curl/docs/cmdline-opts/http3.d @ 2:b50eed0cc0ef upstream

ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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+++ b/mupdf-source/thirdparty/curl/docs/cmdline-opts/http3.d	Mon Sep 15 11:43:07 2025 +0200
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+Long: http3
+Tags: Versions
+Protocols: HTTP
+Added: 7.66.0
+Mutexed: http1.1 http1.0 http2 http2-prior-knowledge
+Requires: HTTP/3
+Help: Use HTTP v3
+See-also: http1.1 http2
+---
+
+WARNING: this option is experiemental. Do not use in production.
+
+Tells curl to use HTTP version 3 directly to the host and port number used in
+the URL. A normal HTTP/3 transaction will be done to a host and then get
+redirected via Alt-SVc, but this option allows a user to circumvent that when
+you know that the target speaks HTTP/3 on the given host and port.
+
+This option will make curl fail if a QUIC connection cannot be established, it
+cannot fall back to a lower HTTP version on its own.