int (*tls_cert) (SSL_CTX *c, const char *file);
int (*tls_key) (SSL_CTX *c, const char *file);
void (*tls_free) (struct listener *l);
int (*tls_cert) (SSL_CTX *c, const char *file);
int (*tls_key) (SSL_CTX *c, const char *file);
void (*tls_free) (struct listener *l);
void (*tls_close) (struct client *c);
int (*tls_recv) (struct client *c, void *buf, int len);
int (*tls_send) (struct client *c, void *buf, int len);
void (*tls_close) (struct client *c);
int (*tls_recv) (struct client *c, void *buf, int len);
int (*tls_send) (struct client *c, void *buf, int len);