curl/docs/cmdline-opts/proto-redir.md

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c: Copyright (C) Daniel Stenberg, daniel@haxx.se, et al. SPDX-License-Identifier: curl Long: proto-redir Arg: Help: Enable/disable PROTOCOLS on redirect Added: 7.20.2 Category: connection curl Multi: single See-also:

• proto Example:
• --proto-redir =http,https $URL ---

--proto-redir

Limit what protocols to allow on redirects. Protocols denied by --proto are not overridden by this option. See --proto for how protocols are represented.

Example, allow only HTTP and HTTPS on redirect:

curl --proto-redir -all,http,https http://example.com

By default curl only allows HTTP, HTTPS, FTP and FTPS on redirects (added in 7.65.2). Specifying all or +all enables all protocols on redirects, which is not good for security.