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// Copyright (c) 2013 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 "net/quic/core/quic_utils.h"
#include "net/quic/core/crypto/crypto_protocol.h"
#include "net/quic/platform/api/quic_string.h"
#include "net/quic/platform/api/quic_test.h"
namespace net {
namespace test {
namespace {
class QuicUtilsTest : public QuicTest {};
TEST_F(QuicUtilsTest, DetermineAddressChangeType) {
const QuicString kIPv4String1 = "1.2.3.4";
const QuicString kIPv4String2 = "1.2.3.5";
const QuicString kIPv4String3 = "1.1.3.5";
const QuicString kIPv6String1 = "2001:700:300:1800::f";
const QuicString kIPv6String2 = "2001:700:300:1800:1:1:1:f";
QuicSocketAddress old_address;
QuicSocketAddress new_address;
QuicIpAddress address;
EXPECT_EQ(NO_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
ASSERT_TRUE(address.FromString(kIPv4String1));
old_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(NO_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
new_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(NO_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
new_address = QuicSocketAddress(address, 5678);
EXPECT_EQ(PORT_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
ASSERT_TRUE(address.FromString(kIPv6String1));
old_address = QuicSocketAddress(address, 1234);
new_address = QuicSocketAddress(address, 5678);
EXPECT_EQ(PORT_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
ASSERT_TRUE(address.FromString(kIPv4String1));
old_address = QuicSocketAddress(address, 1234);
ASSERT_TRUE(address.FromString(kIPv6String1));
new_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(IPV4_TO_IPV6_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
old_address = QuicSocketAddress(address, 1234);
ASSERT_TRUE(address.FromString(kIPv4String1));
new_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(IPV6_TO_IPV4_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
ASSERT_TRUE(address.FromString(kIPv6String2));
new_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(IPV6_TO_IPV6_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
ASSERT_TRUE(address.FromString(kIPv4String1));
old_address = QuicSocketAddress(address, 1234);
ASSERT_TRUE(address.FromString(kIPv4String2));
new_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(IPV4_SUBNET_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
ASSERT_TRUE(address.FromString(kIPv4String3));
new_address = QuicSocketAddress(address, 1234);
EXPECT_EQ(IPV4_TO_IPV4_CHANGE,
QuicUtils::DetermineAddressChangeType(old_address, new_address));
}
QuicUint128 IncrementalHashReference(const void* data, size_t len) {
// The two constants are defined as part of the hash algorithm.
// see http://www.isthe.com/chongo/tech/comp/fnv/
// hash = 144066263297769815596495629667062367629
QuicUint128 hash = MakeQuicUint128(UINT64_C(7809847782465536322),
UINT64_C(7113472399480571277));
// kPrime = 309485009821345068724781371
const QuicUint128 kPrime = MakeQuicUint128(16777216, 315);
const uint8_t* octets = reinterpret_cast<const uint8_t*>(data);
for (size_t i = 0; i < len; ++i) {
hash = hash ^ MakeQuicUint128(0, octets[i]);
hash = hash * kPrime;
}
return hash;
}
TEST_F(QuicUtilsTest, ReferenceTest) {
std::vector<uint8_t> data(32);
for (size_t i = 0; i < data.size(); ++i) {
data[i] = i % 255;
}
EXPECT_EQ(IncrementalHashReference(data.data(), data.size()),
QuicUtils::FNV1a_128_Hash(QuicStringPiece(
reinterpret_cast<const char*>(data.data()), data.size())));
}
TEST_F(QuicUtilsTest, IsUnackable) {
for (size_t i = FIRST_PACKET_STATE; i <= LAST_PACKET_STATE; ++i) {
if (i == NEVER_SENT || i == ACKED || i == UNACKABLE) {
EXPECT_FALSE(QuicUtils::IsAckable(static_cast<SentPacketState>(i)));
} else {
EXPECT_TRUE(QuicUtils::IsAckable(static_cast<SentPacketState>(i)));
}
}
}
TEST_F(QuicUtilsTest, RetransmissionTypeToPacketState) {
for (size_t i = FIRST_TRANSMISSION_TYPE; i <= LAST_TRANSMISSION_TYPE; ++i) {
if (i == NOT_RETRANSMISSION) {
continue;
}
SentPacketState state = QuicUtils::RetransmissionTypeToPacketState(
static_cast<TransmissionType>(i));
if (i == HANDSHAKE_RETRANSMISSION) {
EXPECT_EQ(HANDSHAKE_RETRANSMITTED, state);
} else if (i == LOSS_RETRANSMISSION) {
EXPECT_EQ(LOST, state);
} else if (i == ALL_UNACKED_RETRANSMISSION ||
i == ALL_INITIAL_RETRANSMISSION) {
EXPECT_EQ(UNACKABLE, state);
} else if (i == TLP_RETRANSMISSION) {
EXPECT_EQ(TLP_RETRANSMITTED, state);
} else if (i == RTO_RETRANSMISSION) {
EXPECT_EQ(RTO_RETRANSMITTED, state);
} else if (i == PROBING_RETRANSMISSION) {
EXPECT_EQ(PROBE_RETRANSMITTED, state);
} else {
DCHECK(false)
<< "No corresponding packet state according to transmission type: "
<< i;
}
}
}
} // namespace
} // namespace test
} // namespace net
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