void ssl_set_keyfile(const char *keyfile);
int ssl_init_once(int is_server, int enable_compression, char *errbuf, size_t errbuflen);
SSL *ssl_promotion(int is_server, SOCKET s, char *errbuf, size_t errbuflen);
+void ssl_finish(SSL *ssl);
int ssl_send(SSL *, char const *buffer, int size, char *errbuf, size_t errbuflen);
int ssl_recv(SSL *, char *buffer, int size, char *errbuf, size_t errbuflen);