int SSL_peek(SSL *ssl,char *buf,int num);
int SSL_write(SSL *ssl,const char *buf,int num);
long SSL_ctrl(SSL *ssl,int cmd, long larg, char *parg);
+long SSL_callback_ctrl(SSL *, int, void (*)());
long SSL_CTX_ctrl(SSL_CTX *ctx,int cmd, long larg, char *parg);
+long SSL_CTX_callback_ctrl(SSL_CTX *, int, void (*)());
int SSL_get_error(SSL *s,int ret_code);
const char *SSL_get_version(SSL *s);