SSL_SET_SSL_CTX(3) Library Functions Manual SSL_SET_SSL_CTX(3)

SSL_set_SSL_CTX — modify an SSL connection object to use another context

/* -lssl -lcrypto */
#include <openssl/ssl.h>

SSL_CTX *
SSL_set_SSL_CTX(SSL *ssl, SSL_CTX* ctx);

() causes ssl to use the context ctx.

If ctx is NULL, ssl reverts to using the context that it was initially created from with SSL_new(3).

If ssl already uses ctx, no action occurs.

SSL_set_SSL_CTX() returns an internal pointer to the context that ssl is using as a result of the call, or NULL if memory allocation fails.

ssl(3), SSL_clear(3), SSL_CTX_new(3), SSL_get_SSL_CTX(3), SSL_new(3), SSL_set_security_level(3)

SSL_set_SSL_CTX() first appeared in OpenSSL 0.9.8f and has been available since OpenBSD 4.5.

OpenBSD 7.8 June 8, 2025 SSL_SET_SSL_CTX(3)