c: Copyright (C) Daniel Stenberg, daniel@haxx.se, et al. SPDX-License-Identifier: curl Long: tls-max Arg: Tags: Versions Protocols: TLS Added: 7.54.0 Requires: TLS Help: Set maximum allowed TLS version Category: tls Multi: single See-also:

  • tlsv1.0
  • tlsv1.1
  • tlsv1.2
  • tlsv1.3 Example:
  • --tls-max 1.2 $URL
  • --tls-max 1.3 --tlsv1.2 $URL

--tls-max

VERSION defines maximum supported TLS version. The minimum acceptable version is set by tlsv1.0, tlsv1.1, tlsv1.2 or tlsv1.3.

If the connection is done without TLS, this option has no effect. This includes QUIC-using (HTTP/3) transfers.

default

Use up to recommended TLS version.

1.0

Use up to TLSv1.0.

1.1

Use up to TLSv1.1.

1.2

Use up to TLSv1.2.

1.3

Use up to TLSv1.3.