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| c | SPDX-License-Identifier | Long | Help | Protocols | Added | Category | Multi | See-also | Example | |||
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| Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. | curl | ssl-reqd | Require SSL/TLS | FTP IMAP POP3 SMTP LDAP | 7.20.0 | tls | boolean |
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--ssl-reqd
Require SSL/TLS for the connection. Terminates the connection if the transfer cannot be upgraded to use SSL/TLS.
This option is handled in LDAP (added in 7.81.0). It is fully supported by the OpenLDAP backend and rejected by the generic ldap backend if explicit TLS is required.
This option is unnecessary if you use a URL scheme that in itself implies immediate and implicit use of TLS, like for FTPS, IMAPS, POP3S, SMTPS and LDAPS. Such a transfer always fails if the TLS handshake does not work.
This option was formerly known as --ftp-ssl-reqd.