+
+#define NUM_KEY_UPDATE_MESSAGES 40
+/*
+ * Test KeyUpdate.
+ */
+static int test_key_update(void)
+{
+ SSL_CTX *cctx = NULL, *sctx = NULL;
+ SSL *clientssl = NULL, *serverssl = NULL;
+ int testresult = 0, i, j;
+ char buf[20];
+ static char *mess = "A test message";
+
+ if (!TEST_true(create_ssl_ctx_pair(TLS_server_method(),
+ TLS_client_method(),
+ TLS1_3_VERSION,
+ 0,
+ &sctx, &cctx, cert, privkey))
+ || !TEST_true(create_ssl_objects(sctx, cctx, &serverssl, &clientssl,
+ NULL, NULL))
+ || !TEST_true(create_ssl_connection(serverssl, clientssl,
+ SSL_ERROR_NONE)))
+ goto end;
+
+ for (j = 0; j < 2; j++) {
+ /* Send lots of KeyUpdate messages */
+ for (i = 0; i < NUM_KEY_UPDATE_MESSAGES; i++) {
+ if (!TEST_true(SSL_key_update(clientssl,
+ (j == 0)
+ ? SSL_KEY_UPDATE_NOT_REQUESTED
+ : SSL_KEY_UPDATE_REQUESTED))
+ || !TEST_true(SSL_do_handshake(clientssl)))
+ goto end;
+ }
+
+ /* Check that sending and receiving app data is ok */
+ if (!TEST_int_eq(SSL_write(clientssl, mess, strlen(mess)), strlen(mess))
+ || !TEST_int_eq(SSL_read(serverssl, buf, sizeof(buf)),
+ strlen(mess)))
+ goto end;
+ }
+
+ testresult = 1;
+
+ end:
+ SSL_free(serverssl);
+ SSL_free(clientssl);
+ SSL_CTX_free(sctx);
+ SSL_CTX_free(cctx);
+
+ return testresult;
+}