SSL_CTX_CTRL(3ssl) OpenSSL SSL_CTX_CTRL(3ssl) SSL_CTX_ctrl, SSL_CTX_callback_ctrl, SSL_ctrl, SSL_callback_ctrl - SSL_CTX SSL #include long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg); long SSL_CTX_callback_ctrl(SSL_CTX *, int cmd, void (*fp)()); long SSL_ctrl(SSL *ssl, int cmd, long larg, void *parg); long SSL_callback_ctrl(SSL *, int cmd, void (*fp)()); SSL_*_ctrl() SSL_CTX SSL. cmd larg parg fp. . . SSL*_ctrl() cmd. ssl(7) 2001-2016 OpenSSL. . Apache 2.0 ( ""). . LICENSE . 3 . . : . 3.6.2 7 2026 SSL_CTX_CTRL(3ssl)