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1.\" $OpenBSD: SSL_set_SSL_CTX.3,v 1.5 2025/06/08 22:52:00 schwarze Exp $
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3.\" Copyright (c) 2020 Ingo Schwarze <schwarze@openbsd.org>
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17.Dd $Mdocdate: June 8 2025 $
18.Dt SSL_SET_SSL_CTX 3
19.Os
20.Sh NAME
21.Nm SSL_set_SSL_CTX
22.Nd modify an SSL connection object to use another context
23.Sh SYNOPSIS
24.Lb libssl libcrypto
25.In openssl/ssl.h
26.Ft SSL_CTX *
27.Fo SSL_set_SSL_CTX
28.Fa "SSL *ssl"
29.Fa "SSL_CTX* ctx"
30.Fc
31.Sh DESCRIPTION
32.Fn SSL_set_SSL_CTX
33causes
34.Fa ssl
35to use the context
36.Fa ctx .
37.Pp
38If
39.Fa ctx
40is
41.Dv NULL ,
42.Fa ssl
43reverts to using the context that it was initially created from with
44.Xr SSL_new 3 .
45.Pp
46If
47.Fa ssl
48already uses
49.Fa ctx ,
50no action occurs.
51.Sh RETURN VALUES
52.Fn SSL_set_SSL_CTX
53returns an internal pointer to the context that
54.Fa ssl
55is using as a result of the call, or
56.Dv NULL
57if memory allocation fails.
58.Sh SEE ALSO
59.Xr ssl 3 ,
60.Xr SSL_clear 3 ,
61.Xr SSL_CTX_new 3 ,
62.Xr SSL_get_SSL_CTX 3 ,
63.Xr SSL_new 3 ,
64.Xr SSL_set_security_level 3
65.Sh HISTORY
66.Fn SSL_set_SSL_CTX
67first appeared in OpenSSL 0.9.8f and has been available since
68.Ox 4.5 .