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f4fa166cc5
It's to be used for clients to record metrics and to e.g. attribute metrics to which SCTP implementation the peer was using. This is not explicitly signaled, so heuristics are used. These are not guaranteed to come to the correct conclusion, and the data is not always available. Note: The behavior of dcSCTP will not change depending on the assumed implementation - only by explicitly signaled capabilities. Bug: webrtc:13216 Change-Id: I2f58054d17d53d947ed5845df7a08f974d42f918 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/233100 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Victor Boivie <boivie@webrtc.org> Cr-Commit-Position: refs/heads/main@{#35103}
53 lines
2.2 KiB
C++
53 lines
2.2 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/socket/state_cookie.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::SizeIs;
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TEST(StateCookieTest, SerializeAndDeserialize) {
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Capabilities capabilities = {/*partial_reliability=*/true,
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/*message_interleaving=*/false,
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/*reconfig=*/true};
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StateCookie cookie(VerificationTag(123), TSN(456),
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/*a_rwnd=*/789, TieTag(101112), capabilities);
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std::vector<uint8_t> serialized = cookie.Serialize();
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EXPECT_THAT(serialized, SizeIs(StateCookie::kCookieSize));
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ASSERT_HAS_VALUE_AND_ASSIGN(StateCookie deserialized,
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StateCookie::Deserialize(serialized));
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EXPECT_EQ(deserialized.initiate_tag(), VerificationTag(123));
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EXPECT_EQ(deserialized.initial_tsn(), TSN(456));
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EXPECT_EQ(deserialized.a_rwnd(), 789u);
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EXPECT_EQ(deserialized.tie_tag(), TieTag(101112));
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EXPECT_TRUE(deserialized.capabilities().partial_reliability);
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EXPECT_FALSE(deserialized.capabilities().message_interleaving);
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EXPECT_TRUE(deserialized.capabilities().reconfig);
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}
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TEST(StateCookieTest, ValidateMagicValue) {
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Capabilities capabilities = {/*partial_reliability=*/true,
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/*message_interleaving=*/false,
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/*reconfig=*/true};
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StateCookie cookie(VerificationTag(123), TSN(456),
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/*a_rwnd=*/789, TieTag(101112), capabilities);
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std::vector<uint8_t> serialized = cookie.Serialize();
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ASSERT_THAT(serialized, SizeIs(StateCookie::kCookieSize));
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absl::string_view magic(reinterpret_cast<const char*>(serialized.data()), 8);
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EXPECT_EQ(magic, "dcSCTP00");
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}
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} // namespace
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} // namespace dcsctp
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