From 02ff0ae2cc8dc3ae22a673f92d8efcbc47b3dd4f Mon Sep 17 00:00:00 2001
From: Artem Boldariev <artem@boldariev.com>
Date: Mon, 21 Jul 2025 16:39:46 +0300
Subject: [PATCH] WIP: QUIC dispatcher experiments

---
 tests/isc/meson.build            |   1 +
 tests/isc/quic_dispatcher_test.c | 135 +++++++++++++++++++++++++++++++
 2 files changed, 136 insertions(+)
 create mode 100644 tests/isc/quic_dispatcher_test.c

diff --git a/tests/isc/meson.build b/tests/isc/meson.build
index f1f6ac573b..1b5fd7acec 100644
--- a/tests/isc/meson.build
+++ b/tests/isc/meson.build
@@ -69,6 +69,7 @@ endif
 if config.has('HAVE_LIBNGTCP2')
     isc_test += [
         'ngtcp2_integration',
+        'quic_dispatcher',
         'quic_session',
         'quic_tls',
     ]
diff --git a/tests/isc/quic_dispatcher_test.c b/tests/isc/quic_dispatcher_test.c
new file mode 100644
index 0000000000..14fccd64f6
--- /dev/null
+++ b/tests/isc/quic_dispatcher_test.c
@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, you can obtain one at https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+#include <errno.h>
+#include <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/buffer.h>
+#include <isc/lib.h>
+#include <isc/mem.h>
+#include <isc/ngtcp2_utils.h>
+#include <isc/quic.h>
+#include <isc/random.h>
+#include <isc/time.h>
+#include <isc/tls.h>
+#include <isc/urcu.h>
+
+#include <tests/isc.h>
+
+static struct call_rcu_data *thread_call_rcu_data = NULL;
+
+static isc_mem_t *mctx = NULL;
+
+static isc_tlsctx_t *default_server_tlsctx = NULL;
+static isc_tlsctx_t *default_client_tlsctx = NULL;
+
+ISC_RUN_TEST_IMPL(quic_dispatcher_noop_test) {
+	isc_quic_cid_map_t *map = NULL;
+	isc_quic_cid_map_create(mctx, &map);
+
+	isc_quic_cid_map_detach(&map);
+}
+
+static isc_tlsctx_t *
+create_quic_tls_context(const bool is_server,
+			const isc_tls_quic_interface_t *iface) {
+	isc_tlsctx_t *tlsctx = NULL;
+	isc_result_t result;
+
+	if (is_server) {
+		result = isc_tlsctx_createserver(NULL, NULL, &tlsctx);
+	} else {
+		result = isc_tlsctx_createclient(&tlsctx);
+	}
+
+	if (result != ISC_R_SUCCESS) {
+		return NULL;
+	}
+
+	isc_tlsctx_set_random_session_id_context(tlsctx);
+	isc_tlsctx_quic_configure(tlsctx, iface);
+
+	return tlsctx;
+}
+
+static int
+quic_dispatcher_test_setup(void **state) {
+	UNUSED(state);
+
+	default_server_tlsctx = create_quic_tls_context(
+		true, isc_tls_get_default_quic_interface());
+
+	if (default_server_tlsctx == NULL) {
+		return -1;
+	}
+
+	default_client_tlsctx = create_quic_tls_context(
+		false, isc_tls_get_default_quic_interface());
+
+	if (default_client_tlsctx == NULL) {
+		return -1;
+	}
+
+	return 0;
+}
+
+static int
+quic_dispatcher_test_teardown(void **state) {
+	UNUSED(state);
+
+	isc_tlsctx_free(&default_client_tlsctx);
+	isc_tlsctx_free(&default_server_tlsctx);
+
+	return 0;
+}
+
+static int
+quic_dispatcher_testset_setup(void **state) {
+	UNUSED(state);
+
+	set_thread_call_rcu_data(thread_call_rcu_data);
+
+	isc_tls_quic_crypto_initialize();
+
+	isc_mem_create("testctx", &mctx);
+
+	return 0;
+}
+
+static int
+quic_dispatcher_testset_teardown(void **state) {
+	UNUSED(state);
+
+	isc_mem_detach(&mctx);
+
+	isc_tls_quic_crypto_shutdown();
+
+	set_thread_call_rcu_data(NULL);
+
+	return 0;
+}
+
+ISC_TEST_LIST_START
+ISC_TEST_ENTRY_CUSTOM(quic_dispatcher_noop_test, quic_dispatcher_test_setup,
+		      quic_dispatcher_test_teardown)
+ISC_TEST_LIST_END
+
+ISC_TEST_MAIN_CUSTOM(quic_dispatcher_testset_setup,
+		     quic_dispatcher_testset_teardown);