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.\" ========================================================================
.\"
.IX Title "SSL_CTX_set_ssl_version 3"
.TH SSL_CTX_set_ssl_version 3 "2019-12-20" "1.0.2u" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
SSL_CTX_set_ssl_version, SSL_set_ssl_method, SSL_get_ssl_method
\&\- choose a new TLS/SSL method
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ssl.h>
\&
\& int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *method);
\& int SSL_set_ssl_method(SSL *s, const SSL_METHOD *method);
\& const SSL_METHOD *SSL_get_ssl_method(SSL *ssl);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fBSSL_CTX_set_ssl_version()\fR sets a new default \s-1TLS/SSL\s0 \fBmethod\fR for \s-1SSL\s0 objects
newly created from this \fBctx\fR. \s-1SSL\s0 objects already created with
\&\fBSSL_new\fR\|(3) are not affected, except when
\&\fBSSL_clear\fR\|(3) is being called.
.PP
\&\fBSSL_set_ssl_method()\fR sets a new \s-1TLS/SSL\s0 \fBmethod\fR for a particular \fBssl\fR
object. It may be reset, when \fBSSL_clear()\fR is called.
.PP
\&\fBSSL_get_ssl_method()\fR returns a function pointer to the \s-1TLS/SSL\s0 method
set in \fBssl\fR.
.SH "NOTES"
.IX Header "NOTES"
The available \fBmethod\fR choices are described in
\&\fBSSL_CTX_new\fR\|(3).
.PP
When \fBSSL_clear\fR\|(3) is called and no session is connected to
an \s-1SSL\s0 object, the method of the \s-1SSL\s0 object is reset to the method currently
set in the corresponding \s-1SSL_CTX\s0 object.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
The following return values can occur for \fBSSL_CTX_set_ssl_version()\fR
and \fBSSL_set_ssl_method()\fR:
.IP "0" 4
The new choice failed, check the error stack to find out the reason.
.IP "1" 4
.IX Item "1"
The operation succeeded.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBSSL_CTX_new\fR\|(3), \fBSSL_new\fR\|(3),
\&\fBSSL_clear\fR\|(3), \fBssl\fR\|(3),
\&\fBSSL_set_connect_state\fR\|(3)

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