const unsigned char *identity,
size_t identity_len,
SSL_SESSION **sess);
+typedef int (*SSL_psk_use_session_cb_func)(SSL *ssl, const EVP_MD *md,
+ const unsigned char **id,
+ size_t *idlen,
+ SSL_SESSION **sess);
void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb);
void SSL_set_psk_server_callback(SSL *ssl, SSL_psk_server_cb_func cb);