curl/docs/cmdline-opts/http2.d
Daniel Stenberg df45fd1794
docs/cmdline-opts: add copyright and license identifier to each file
gen.pl now insists on C: and SPDX-License-Identifier: fields to be
present in all files.

Closes #9002
2022-06-14 08:48:09 +02:00

26 lines
770 B
Makefile

c: Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
SPDX-License-Identifier: curl
Long: http2
Tags: Versions
Protocols: HTTP
Added: 7.33.0
Mutexed: http1.1 http1.0 http2-prior-knowledge http3
Requires: HTTP/2
See-also: no-alpn
Help: Use HTTP 2
See-also: http1.1 http3
Category: http
Example: --http2 $URL
---
Tells curl to use HTTP version 2.
For HTTPS, this means curl will attempt to negotiate HTTP/2 in the TLS
handshake. curl does this by default.
For HTTP, this means curl will attempt to upgrade the request to HTTP/2 using
the Upgrade: request header.
When curl uses HTTP/2 over HTTPS, it does not itself insist on TLS 1.2 or
higher even though that is required by the specification. A user can add this
version requirement with --tlsv1.2.