b87746b155
Quite a large commit, but mostly trivial. It adds all the (in dcSCTP) supported parameters, error causes and chunks as an object model, with serializers and deserializers. They are verified with packet captures where available, that have been captured with Wireshark against a reference implementation. This _could_ be split in parameter/ as one commit, error_cause/ in the following, and chunk/ as the third, but as each chunk/parameter is completely isolated from the other, reviewing it should be linear with the number of chunks/parameters and having them in more commits wouldn't change that, taken all those three commits into account. Bug: webrtc:12614 Change-Id: Ie83c9a22cae6e3a39e35ef26fd532837a6387a08 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/213347 Commit-Queue: Victor Boivie <boivie@webrtc.org> Reviewed-by: Tommi <tommi@webrtc.org> Cr-Commit-Position: refs/heads/master@{#33625}
124 lines
4.2 KiB
C++
124 lines
4.2 KiB
C++
/*
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* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "net/dcsctp/packet/chunk/idata_chunk.h"
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#include <cstdint>
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#include <type_traits>
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#include <vector>
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#include "api/array_view.h"
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#include "net/dcsctp/testing/testing_macros.h"
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#include "rtc_base/gunit.h"
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#include "test/gmock.h"
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namespace dcsctp {
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namespace {
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using ::testing::ElementsAre;
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TEST(IDataChunkTest, AtBeginningFromCapture) {
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/*
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I_DATA chunk(ordered, first segment, TSN: 2487901653, SID: 1, MID: 0,
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payload length: 1180 bytes)
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Chunk type: I_DATA (64)
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Chunk flags: 0x02
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Chunk length: 1200
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Transmission sequence number: 2487901653
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Stream identifier: 0x0001
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Reserved: 0
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Message identifier: 0
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Payload protocol identifier: WebRTC Binary (53)
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Reassembled Message in frame: 39
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*/
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uint8_t data[] = {0x40, 0x02, 0x00, 0x15, 0x94, 0x4a, 0x5d, 0xd5,
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0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x35, 0x01, 0x00, 0x00, 0x00};
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ASSERT_HAS_VALUE_AND_ASSIGN(IDataChunk chunk, IDataChunk::Parse(data));
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EXPECT_EQ(*chunk.tsn(), 2487901653);
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EXPECT_EQ(*chunk.stream_id(), 1);
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EXPECT_EQ(*chunk.message_id(), 0u);
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EXPECT_EQ(*chunk.ppid(), 53u);
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EXPECT_EQ(*chunk.fsn(), 0u); // Not provided (so set to zero)
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}
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TEST(IDataChunkTest, AtBeginningSerializeAndDeserialize) {
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IDataChunk::Options options;
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options.is_beginning = Data::IsBeginning(true);
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IDataChunk chunk(TSN(123), StreamID(456), MID(789), PPID(53), FSN(0), {1},
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options);
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std::vector<uint8_t> serialized;
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chunk.SerializeTo(serialized);
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ASSERT_HAS_VALUE_AND_ASSIGN(IDataChunk deserialized,
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IDataChunk::Parse(serialized));
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EXPECT_EQ(*deserialized.tsn(), 123u);
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EXPECT_EQ(*deserialized.stream_id(), 456u);
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EXPECT_EQ(*deserialized.message_id(), 789u);
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EXPECT_EQ(*deserialized.ppid(), 53u);
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EXPECT_EQ(*deserialized.fsn(), 0u);
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EXPECT_EQ(deserialized.ToString(),
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"I-DATA, type=ordered::first, tsn=123, stream_id=456, "
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"message_id=789, ppid=53, length=1");
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}
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TEST(IDataChunkTest, InMiddleFromCapture) {
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/*
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I_DATA chunk(ordered, last segment, TSN: 2487901706, SID: 3, MID: 1,
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FSN: 8, payload length: 560 bytes)
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Chunk type: I_DATA (64)
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Chunk flags: 0x01
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Chunk length: 580
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Transmission sequence number: 2487901706
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Stream identifier: 0x0003
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Reserved: 0
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Message identifier: 1
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Fragment sequence number: 8
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Reassembled SCTP Fragments (10000 bytes, 9 fragments):
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*/
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uint8_t data[] = {0x40, 0x01, 0x00, 0x15, 0x94, 0x4a, 0x5e, 0x0a,
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0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x00};
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ASSERT_HAS_VALUE_AND_ASSIGN(IDataChunk chunk, IDataChunk::Parse(data));
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EXPECT_EQ(*chunk.tsn(), 2487901706);
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EXPECT_EQ(*chunk.stream_id(), 3u);
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EXPECT_EQ(*chunk.message_id(), 1u);
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EXPECT_EQ(*chunk.ppid(), 0u); // Not provided (so set to zero)
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EXPECT_EQ(*chunk.fsn(), 8u);
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}
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TEST(IDataChunkTest, InMiddleSerializeAndDeserialize) {
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IDataChunk chunk(TSN(123), StreamID(456), MID(789), PPID(0), FSN(101112),
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{1, 2, 3}, /*options=*/{});
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std::vector<uint8_t> serialized;
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chunk.SerializeTo(serialized);
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ASSERT_HAS_VALUE_AND_ASSIGN(IDataChunk deserialized,
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IDataChunk::Parse(serialized));
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EXPECT_EQ(*deserialized.tsn(), 123u);
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EXPECT_EQ(*deserialized.stream_id(), 456u);
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EXPECT_EQ(*deserialized.message_id(), 789u);
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EXPECT_EQ(*deserialized.ppid(), 0u);
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EXPECT_EQ(*deserialized.fsn(), 101112u);
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EXPECT_THAT(deserialized.payload(), ElementsAre(1, 2, 3));
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EXPECT_EQ(deserialized.ToString(),
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"I-DATA, type=ordered::middle, tsn=123, stream_id=456, "
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"message_id=789, fsn=101112, length=3");
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}
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} // namespace
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} // namespace dcsctp
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