1 /*
2 * Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10 #include "net/dcsctp/packet/chunk/reconfig_chunk.h"
11
12 #include <cstdint>
13 #include <type_traits>
14 #include <vector>
15
16 #include "api/array_view.h"
17 #include "net/dcsctp/packet/parameter/outgoing_ssn_reset_request_parameter.h"
18 #include "net/dcsctp/packet/parameter/parameter.h"
19 #include "net/dcsctp/packet/tlv_trait.h"
20 #include "net/dcsctp/testing/testing_macros.h"
21 #include "rtc_base/gunit.h"
22 #include "test/gmock.h"
23
24 namespace dcsctp {
25 namespace {
26 using ::testing::ElementsAre;
27 using ::testing::SizeIs;
28
TEST(ReConfigChunkTest,FromCapture)29 TEST(ReConfigChunkTest, FromCapture) {
30 /*
31 RE_CONFIG chunk
32 Chunk type: RE_CONFIG (130)
33 Chunk flags: 0x00
34 Chunk length: 22
35 Outgoing SSN reset request parameter
36 Parameter type: Outgoing SSN reset request (0x000d)
37 Parameter length: 18
38 Re-configuration request sequence number: 2270550051
39 Re-configuration response sequence number: 1905748638
40 Senders last assigned TSN: 2270550066
41 Stream Identifier: 6
42 Chunk padding: 0000
43 */
44
45 uint8_t data[] = {0x82, 0x00, 0x00, 0x16, 0x00, 0x0d, 0x00, 0x12,
46 0x87, 0x55, 0xd8, 0x23, 0x71, 0x97, 0x6a, 0x9e,
47 0x87, 0x55, 0xd8, 0x32, 0x00, 0x06, 0x00, 0x00};
48
49 ASSERT_HAS_VALUE_AND_ASSIGN(ReConfigChunk chunk, ReConfigChunk::Parse(data));
50
51 const Parameters& parameters = chunk.parameters();
52 EXPECT_THAT(parameters.descriptors(), SizeIs(1));
53 ParameterDescriptor desc = parameters.descriptors()[0];
54 ASSERT_EQ(desc.type, OutgoingSSNResetRequestParameter::kType);
55 ASSERT_HAS_VALUE_AND_ASSIGN(
56 OutgoingSSNResetRequestParameter req,
57 OutgoingSSNResetRequestParameter::Parse(desc.data));
58 EXPECT_EQ(*req.request_sequence_number(), 2270550051u);
59 EXPECT_EQ(*req.response_sequence_number(), 1905748638u);
60 EXPECT_EQ(*req.sender_last_assigned_tsn(), 2270550066u);
61 EXPECT_THAT(req.stream_ids(), ElementsAre(StreamID(6)));
62 }
63
TEST(ReConfigChunkTest,SerializeAndDeserialize)64 TEST(ReConfigChunkTest, SerializeAndDeserialize) {
65 Parameters::Builder params_builder =
66 Parameters::Builder().Add(OutgoingSSNResetRequestParameter(
67 ReconfigRequestSN(123), ReconfigRequestSN(456), TSN(789),
68 {StreamID(42), StreamID(43)}));
69
70 ReConfigChunk chunk(params_builder.Build());
71
72 std::vector<uint8_t> serialized;
73 chunk.SerializeTo(serialized);
74
75 ASSERT_HAS_VALUE_AND_ASSIGN(ReConfigChunk deserialized,
76 ReConfigChunk::Parse(serialized));
77
78 const Parameters& parameters = deserialized.parameters();
79 EXPECT_THAT(parameters.descriptors(), SizeIs(1));
80 ParameterDescriptor desc = parameters.descriptors()[0];
81 ASSERT_EQ(desc.type, OutgoingSSNResetRequestParameter::kType);
82 ASSERT_HAS_VALUE_AND_ASSIGN(
83 OutgoingSSNResetRequestParameter req,
84 OutgoingSSNResetRequestParameter::Parse(desc.data));
85 EXPECT_EQ(*req.request_sequence_number(), 123u);
86 EXPECT_EQ(*req.response_sequence_number(), 456u);
87 EXPECT_EQ(*req.sender_last_assigned_tsn(), 789u);
88 EXPECT_THAT(req.stream_ids(), ElementsAre(StreamID(42), StreamID(43)));
89
90 EXPECT_EQ(deserialized.ToString(), "RE-CONFIG");
91 }
92
93 } // namespace
94 } // namespace dcsctp
95