webrtc/net/dcsctp/packet/chunk/init_ack_chunk_test.cc
Victor Boivie b87746b155 dcsctp: Add parameters, error causes and chunks
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}
2021-04-06 10:28:18 +00:00

127 lines
5.6 KiB
C++

/*
* Copyright (c) 2021 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "net/dcsctp/packet/chunk/init_ack_chunk.h"
#include <stdint.h>
#include <utility>
#include <vector>
#include "api/array_view.h"
#include "net/dcsctp/packet/parameter/forward_tsn_supported_parameter.h"
#include "net/dcsctp/packet/parameter/parameter.h"
#include "net/dcsctp/packet/parameter/state_cookie_parameter.h"
#include "net/dcsctp/packet/parameter/supported_extensions_parameter.h"
#include "net/dcsctp/testing/testing_macros.h"
#include "rtc_base/gunit.h"
#include "test/gmock.h"
namespace dcsctp {
namespace {
using ::testing::ElementsAre;
TEST(InitAckChunkTest, FromCapture) {
/*
INIT_ACK chunk (Outbound streams: 1000, inbound streams: 2048)
Chunk type: INIT_ACK (2)
Chunk flags: 0x00
Chunk length: 292
Initiate tag: 0x579c2f98
Advertised receiver window credit (a_rwnd): 131072
Number of outbound streams: 1000
Number of inbound streams: 2048
Initial TSN: 1670811335
Forward TSN supported parameter
Parameter type: Forward TSN supported (0xc000)
Parameter length: 4
Supported Extensions parameter (Supported types: FORWARD_TSN, RE_CONFIG)
Parameter type: Supported Extensions (0x8008)
Parameter length: 6
Supported chunk type: FORWARD_TSN (192)
Supported chunk type: RE_CONFIG (130)
Parameter padding: 0000
State cookie parameter (Cookie length: 256 bytes)
Parameter type: State cookie (0x0007)
Parameter length: 260
State cookie: 4b414d452d42534420312e310000000096b8386000000000…
*/
uint8_t data[] = {
0x02, 0x00, 0x01, 0x24, 0x57, 0x9c, 0x2f, 0x98, 0x00, 0x02, 0x00, 0x00,
0x03, 0xe8, 0x08, 0x00, 0x63, 0x96, 0x8e, 0xc7, 0xc0, 0x00, 0x00, 0x04,
0x80, 0x08, 0x00, 0x06, 0xc0, 0x82, 0x00, 0x00, 0x00, 0x07, 0x01, 0x04,
0x4b, 0x41, 0x4d, 0x45, 0x2d, 0x42, 0x53, 0x44, 0x20, 0x31, 0x2e, 0x31,
0x00, 0x00, 0x00, 0x00, 0x96, 0xb8, 0x38, 0x60, 0x00, 0x00, 0x00, 0x00,
0x52, 0x5a, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 0xea, 0x00, 0x00,
0xb5, 0xaa, 0x19, 0xea, 0x31, 0xef, 0xa4, 0x2b, 0x90, 0x16, 0x7a, 0xde,
0x57, 0x9c, 0x2f, 0x98, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x13, 0x88, 0x13, 0x88, 0x00, 0x00, 0x01, 0x00, 0x01, 0x01, 0x01, 0x00,
0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x5a, 0xde, 0x7a, 0x16, 0x90,
0x00, 0x02, 0x00, 0x00, 0x03, 0xe8, 0x03, 0xe8, 0x25, 0x0d, 0x37, 0xe8,
0x80, 0x00, 0x00, 0x04, 0xc0, 0x00, 0x00, 0x04, 0x80, 0x08, 0x00, 0x09,
0xc0, 0x0f, 0xc1, 0x80, 0x82, 0x00, 0x00, 0x00, 0x80, 0x02, 0x00, 0x24,
0xab, 0x31, 0x44, 0x62, 0x12, 0x1a, 0x15, 0x13, 0xfd, 0x5a, 0x5f, 0x69,
0xef, 0xaa, 0x06, 0xe9, 0xab, 0xd7, 0x48, 0xcc, 0x3b, 0xd1, 0x4b, 0x60,
0xed, 0x7f, 0xa6, 0x44, 0xce, 0x4d, 0xd2, 0xad, 0x80, 0x04, 0x00, 0x06,
0x00, 0x01, 0x00, 0x00, 0x80, 0x03, 0x00, 0x06, 0x80, 0xc1, 0x00, 0x00,
0x02, 0x00, 0x01, 0x24, 0x57, 0x9c, 0x2f, 0x98, 0x00, 0x02, 0x00, 0x00,
0x03, 0xe8, 0x08, 0x00, 0x63, 0x96, 0x8e, 0xc7, 0xc0, 0x00, 0x00, 0x04,
0x80, 0x08, 0x00, 0x06, 0xc0, 0x82, 0x00, 0x00, 0x51, 0x95, 0x01, 0x88,
0x0d, 0x80, 0x7b, 0x19, 0xe7, 0xf9, 0xc6, 0x18, 0x5c, 0x4a, 0xbf, 0x39,
0x32, 0xe5, 0x63, 0x8e};
ASSERT_HAS_VALUE_AND_ASSIGN(InitAckChunk chunk, InitAckChunk::Parse(data));
EXPECT_EQ(chunk.initiate_tag(), VerificationTag(0x579c2f98u));
EXPECT_EQ(chunk.a_rwnd(), 131072u);
EXPECT_EQ(chunk.nbr_outbound_streams(), 1000u);
EXPECT_EQ(chunk.nbr_inbound_streams(), 2048u);
EXPECT_EQ(chunk.initial_tsn(), TSN(1670811335u));
EXPECT_TRUE(
chunk.parameters().get<ForwardTsnSupportedParameter>().has_value());
EXPECT_TRUE(
chunk.parameters().get<SupportedExtensionsParameter>().has_value());
EXPECT_TRUE(chunk.parameters().get<StateCookieParameter>().has_value());
}
TEST(InitAckChunkTest, SerializeAndDeserialize) {
uint8_t state_cookie[] = {1, 2, 3, 4, 5};
Parameters parameters =
Parameters::Builder().Add(StateCookieParameter(state_cookie)).Build();
InitAckChunk chunk(VerificationTag(123), /*a_rwnd=*/456,
/*nbr_outbound_streams=*/65535,
/*nbr_inbound_streams=*/65534, /*initial_tsn=*/TSN(789),
/*parameters=*/std::move(parameters));
std::vector<uint8_t> serialized;
chunk.SerializeTo(serialized);
ASSERT_HAS_VALUE_AND_ASSIGN(InitAckChunk deserialized,
InitAckChunk::Parse(serialized));
EXPECT_EQ(chunk.initiate_tag(), VerificationTag(123u));
EXPECT_EQ(chunk.a_rwnd(), 456u);
EXPECT_EQ(chunk.nbr_outbound_streams(), 65535u);
EXPECT_EQ(chunk.nbr_inbound_streams(), 65534u);
EXPECT_EQ(chunk.initial_tsn(), TSN(789u));
ASSERT_HAS_VALUE_AND_ASSIGN(
StateCookieParameter cookie,
deserialized.parameters().get<StateCookieParameter>());
EXPECT_THAT(cookie.data(), ElementsAre(1, 2, 3, 4, 5));
EXPECT_EQ(deserialized.ToString(),
"INIT_ACK, initiate_tag=0x7b, initial_tsn=789");
}
} // namespace
} // namespace dcsctp