SSL_CTX_set_tlsext_status_cb
SSL_CTX_set_tlsext_status_cb(ctx, ocsp_resp_cb);
SSL_CTX_set_tlsext_status_cb(ctx, cert_status_cb);
SSL_CTX_set_tlsext_status_cb(ctx2, cert_status_cb);
SSL_CTX_set_tlsext_status_cb(client_ctx, client_ocsp_cb);
SSL_CTX_set_tlsext_status_cb(server_ctx, server_ocsp_cb);
SSL_CTX_set_tlsext_status_cb(cctx, ocsp_client_cb);
SSL_CTX_set_tlsext_status_cb(sctx, ocsp_server_cb);