SSL_get_SSL_CTX.3ssl man page
SSL_get_SSL_CTX — get the SSL_CTX from which an SSL is created
SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl);
SSL_get_SSL_CTX() returns a pointer to the SSL_CTX object, from which ssl was created with SSL_new(3).
The pointer to the SSL_CTX object is returned.
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