c: Copyright (C) Daniel Stenberg, daniel@haxx.se, et al. SPDX-License-Identifier: curl Long: proxy-http2 Tags: Versions HTTP/2 Protocols: HTTP Added: 8.1.0 Mutexed: Requires: HTTP/2 Help: Use HTTP/2 with HTTPS proxy Category: http proxy Multi: boolean See-also:
--proxy-http2
Tells curl to try negotiate HTTP version 2 with an HTTPS proxy. The proxy might still only offer HTTP/1 and then curl sticks to using that version.
This has no effect for any other kinds of proxies.