1SSL_CTX_SET_SSL_VERSION(3ossl)      OpenSSL     SSL_CTX_SET_SSL_VERSION(3ossl)
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NAME

6       SSL_CTX_set_ssl_version, SSL_CTX_get_ssl_method, SSL_set_ssl_method,
7       SSL_get_ssl_method - choose a new TLS/SSL method
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SYNOPSIS

10        #include <openssl/ssl.h>
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12        int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *method);
13        const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx);
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15        int SSL_set_ssl_method(SSL *s, const SSL_METHOD *method);
16        const SSL_METHOD *SSL_get_ssl_method(const SSL *ssl);
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DESCRIPTION

19       SSL_CTX_set_ssl_version() sets a new default TLS/SSL method for SSL
20       objects newly created from this ctx.  Most of the configuration
21       attached to the SSL_CTX object is retained, with the exception of the
22       configured TLS ciphers, which are reset to the default values.  SSL
23       objects already created from this SSL_CTX with SSL_new(3) are not
24       affected, except when SSL_clear(3) is being called, as described below.
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26       SSL_CTX_get_ssl_method() returns the SSL_METHOD which was used to
27       construct the SSL_CTX.
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29       SSL_set_ssl_method() sets a new TLS/SSL method for a particular ssl
30       object. It may be reset, when SSL_clear() is called.
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32       SSL_get_ssl_method() returns a pointer to the TLS/SSL method set in
33       ssl.
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NOTES

36       The available method choices are described in SSL_CTX_new(3).
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38       When SSL_clear(3) is called and no session is connected to an SSL
39       object, the method of the SSL object is reset to the method currently
40       set in the corresponding SSL_CTX object.
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42       SSL_CTX_set_version() has unusual semantics and no clear use case; it
43       would usually be preferable to create a new SSL_CTX object than to try
44       to reuse an existing one in this fashion.  Its usage is considered
45       deprecated.
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RETURN VALUES

48       The following return values can occur for SSL_CTX_set_ssl_version() and
49       SSL_set_ssl_method():
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51       0   The new choice failed, check the error stack to find out the
52           reason.
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54       1   The operation succeeded.
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56       SSL_CTX_get_ssl_method() and SSL_get_ssl_method() always return non-
57       NULL pointers.
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SEE ALSO

60       SSL_CTX_new(3), SSL_new(3), SSL_clear(3), ssl(7),
61       SSL_set_connect_state(3)
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HISTORY

64       SSL_CTX_set_ssl_version() was deprecated in OpenSSL 3.0.
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67       Copyright 2000-2022 The OpenSSL Project Authors. All Rights Reserved.
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69       Licensed under the Apache License 2.0 (the "License").  You may not use
70       this file except in compliance with the License.  You can obtain a copy
71       in the file LICENSE in the source distribution or at
72       <https://www.openssl.org/source/license.html>.
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763.0.9                             2023-07-27    SSL_CTX_SET_SSL_VERSION(3ossl)
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