blob: fdd4c6f96c20a3e90e6be76571a3509db33fafa8 [file] [log] [blame]
// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "quiche/quic/core/quic_connection_id.h"
#include <cstdint>
#include <cstring>
#include <string>
#include "absl/base/macros.h"
#include "quiche/quic/core/quic_types.h"
#include "quiche/quic/platform/api/quic_test.h"
#include "quiche/quic/test_tools/quic_test_utils.h"
namespace quic::test {
namespace {
class QuicConnectionIdTest : public QuicTest {};
TEST_F(QuicConnectionIdTest, Empty) {
QuicConnectionId connection_id_empty = EmptyQuicConnectionId();
EXPECT_TRUE(connection_id_empty.IsEmpty());
}
TEST_F(QuicConnectionIdTest, DefaultIsEmpty) {
QuicConnectionId connection_id_empty = QuicConnectionId();
EXPECT_TRUE(connection_id_empty.IsEmpty());
}
TEST_F(QuicConnectionIdTest, NotEmpty) {
QuicConnectionId connection_id = test::TestConnectionId(1);
EXPECT_FALSE(connection_id.IsEmpty());
}
TEST_F(QuicConnectionIdTest, ZeroIsNotEmpty) {
QuicConnectionId connection_id = test::TestConnectionId(0);
EXPECT_FALSE(connection_id.IsEmpty());
}
TEST_F(QuicConnectionIdTest, Data) {
char connection_id_data[kQuicDefaultConnectionIdLength];
memset(connection_id_data, 0x42, sizeof(connection_id_data));
QuicConnectionId connection_id1 =
QuicConnectionId(connection_id_data, sizeof(connection_id_data));
QuicConnectionId connection_id2 =
QuicConnectionId(connection_id_data, sizeof(connection_id_data));
EXPECT_EQ(connection_id1, connection_id2);
EXPECT_EQ(connection_id1.length(), kQuicDefaultConnectionIdLength);
EXPECT_EQ(connection_id1.data(), connection_id1.mutable_data());
EXPECT_EQ(0, memcmp(connection_id1.data(), connection_id2.data(),
sizeof(connection_id_data)));
EXPECT_EQ(0, memcmp(connection_id1.data(), connection_id_data,
sizeof(connection_id_data)));
connection_id2.mutable_data()[0] = 0x33;
EXPECT_NE(connection_id1, connection_id2);
static const uint8_t kNewLength = 4;
connection_id2.set_length(kNewLength);
EXPECT_EQ(kNewLength, connection_id2.length());
}
TEST_F(QuicConnectionIdTest, SpanData) {
QuicConnectionId connection_id = QuicConnectionId({0x01, 0x02, 0x03});
EXPECT_EQ(connection_id.length(), 3);
QuicConnectionId empty_connection_id =
QuicConnectionId(absl::Span<uint8_t>());
EXPECT_EQ(empty_connection_id.length(), 0);
QuicConnectionId connection_id2 = QuicConnectionId({
0x01,
0x02,
0x03,
0x04,
0x05,
0x06,
0x07,
0x08,
0x09,
0x0a,
0x0b,
0x0c,
0x0d,
0x0e,
0x0f,
0x10,
});
EXPECT_EQ(connection_id2.length(), 16);
}
TEST_F(QuicConnectionIdTest, DoubleConvert) {
QuicConnectionId connection_id64_1 = test::TestConnectionId(1);
QuicConnectionId connection_id64_2 = test::TestConnectionId(42);
QuicConnectionId connection_id64_3 =
test::TestConnectionId(UINT64_C(0xfedcba9876543210));
EXPECT_EQ(connection_id64_1,
test::TestConnectionId(
test::TestConnectionIdToUInt64(connection_id64_1)));
EXPECT_EQ(connection_id64_2,
test::TestConnectionId(
test::TestConnectionIdToUInt64(connection_id64_2)));
EXPECT_EQ(connection_id64_3,
test::TestConnectionId(
test::TestConnectionIdToUInt64(connection_id64_3)));
EXPECT_NE(connection_id64_1, connection_id64_2);
EXPECT_NE(connection_id64_1, connection_id64_3);
EXPECT_NE(connection_id64_2, connection_id64_3);
}
TEST_F(QuicConnectionIdTest, Hash) {
QuicConnectionId connection_id64_1 = test::TestConnectionId(1);
QuicConnectionId connection_id64_1b = test::TestConnectionId(1);
QuicConnectionId connection_id64_2 = test::TestConnectionId(42);
QuicConnectionId connection_id64_3 =
test::TestConnectionId(UINT64_C(0xfedcba9876543210));
EXPECT_EQ(connection_id64_1.Hash(), connection_id64_1b.Hash());
EXPECT_NE(connection_id64_1.Hash(), connection_id64_2.Hash());
EXPECT_NE(connection_id64_1.Hash(), connection_id64_3.Hash());
EXPECT_NE(connection_id64_2.Hash(), connection_id64_3.Hash());
// Verify that any two all-zero connection IDs of different lengths never
// have the same hash.
const char connection_id_bytes[255] = {};
for (uint8_t i = 0; i < sizeof(connection_id_bytes) - 1; ++i) {
QuicConnectionId connection_id_i(connection_id_bytes, i);
for (uint8_t j = i + 1; j < sizeof(connection_id_bytes); ++j) {
QuicConnectionId connection_id_j(connection_id_bytes, j);
EXPECT_NE(connection_id_i.Hash(), connection_id_j.Hash());
}
}
}
TEST_F(QuicConnectionIdTest, AssignAndCopy) {
QuicConnectionId connection_id = test::TestConnectionId(1);
QuicConnectionId connection_id2 = test::TestConnectionId(2);
connection_id = connection_id2;
EXPECT_EQ(connection_id, test::TestConnectionId(2));
EXPECT_NE(connection_id, test::TestConnectionId(1));
connection_id = QuicConnectionId(test::TestConnectionId(1));
EXPECT_EQ(connection_id, test::TestConnectionId(1));
EXPECT_NE(connection_id, test::TestConnectionId(2));
}
TEST_F(QuicConnectionIdTest, ChangeLength) {
QuicConnectionId connection_id64_1 = test::TestConnectionId(1);
QuicConnectionId connection_id64_2 = test::TestConnectionId(2);
QuicConnectionId connection_id136_2 = test::TestConnectionId(2);
connection_id136_2.set_length(17);
memset(connection_id136_2.mutable_data() + 8, 0, 9);
char connection_id136_2_bytes[17] = {0, 0, 0, 0, 0, 0, 0, 2, 0,
0, 0, 0, 0, 0, 0, 0, 0};
QuicConnectionId connection_id136_2b(connection_id136_2_bytes,
sizeof(connection_id136_2_bytes));
EXPECT_EQ(connection_id136_2, connection_id136_2b);
QuicConnectionId connection_id = connection_id64_1;
connection_id.set_length(17);
EXPECT_NE(connection_id64_1, connection_id);
// Check resizing big to small.
connection_id.set_length(8);
EXPECT_EQ(connection_id64_1, connection_id);
// Check resizing small to big.
connection_id.set_length(17);
memset(connection_id.mutable_data(), 0, connection_id.length());
memcpy(connection_id.mutable_data(), connection_id64_2.data(),
connection_id64_2.length());
EXPECT_EQ(connection_id136_2, connection_id);
EXPECT_EQ(connection_id136_2b, connection_id);
QuicConnectionId connection_id120(connection_id136_2_bytes, 15);
connection_id.set_length(15);
EXPECT_EQ(connection_id120, connection_id);
// Check resizing big to big.
QuicConnectionId connection_id2 = connection_id120;
connection_id2.set_length(17);
connection_id2.mutable_data()[15] = 0;
connection_id2.mutable_data()[16] = 0;
EXPECT_EQ(connection_id136_2, connection_id2);
EXPECT_EQ(connection_id136_2b, connection_id2);
}
} // namespace
} // namespace quic::test