| // Copyright 2019 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 "discovery/mdns/mdns_receiver.h" |
| |
| #include <memory> |
| #include <utility> |
| #include <vector> |
| |
| #include "discovery/common/config.h" |
| #include "discovery/mdns/mdns_records.h" |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| #include "platform/api/time.h" |
| #include "platform/test/fake_udp_socket.h" |
| |
| namespace openscreen { |
| namespace discovery { |
| |
| using testing::_; |
| using testing::Return; |
| |
| class MockMdnsReceiverDelegate : public MdnsReceiver::ResponseClient { |
| public: |
| MOCK_METHOD(void, OnMessageReceived, (const MdnsMessage&)); |
| }; |
| |
| TEST(MdnsReceiverTest, ReceiveQuery) { |
| // clang-format off |
| const std::vector<uint8_t> kQueryBytes = { |
| 0x00, 0x01, // ID = 1 |
| 0x00, 0x00, // FLAGS = None |
| 0x00, 0x01, // Question count |
| 0x00, 0x00, // Answer count |
| 0x00, 0x00, // Authority count |
| 0x00, 0x00, // Additional count |
| // Question |
| 0x07, 't', 'e', 's', 't', 'i', 'n', 'g', |
| 0x05, 'l', 'o', 'c', 'a', 'l', |
| 0x00, |
| 0x00, 0x01, // TYPE = A (1) |
| 0x00, 0x01, // CLASS = IN (1) |
| }; |
| // clang-format on |
| |
| Config config; |
| FakeUdpSocket socket; |
| MockMdnsReceiverDelegate delegate; |
| MdnsReceiver receiver(config); |
| receiver.SetQueryCallback( |
| [&delegate](const MdnsMessage& message, const IPEndpoint& endpoint) { |
| delegate.OnMessageReceived(message); |
| }); |
| receiver.Start(); |
| |
| MdnsQuestion question(DomainName{"testing", "local"}, DnsType::kA, |
| DnsClass::kIN, ResponseType::kMulticast); |
| MdnsMessage message(1, MessageType::Query); |
| message.AddQuestion(question); |
| |
| UdpPacket packet(kQueryBytes.data(), kQueryBytes.data() + kQueryBytes.size()); |
| packet.set_source( |
| IPEndpoint{.address = IPAddress(192, 168, 1, 1), .port = 31337}); |
| packet.set_destination( |
| IPEndpoint{.address = IPAddress(kDefaultMulticastGroupIPv4), |
| .port = kDefaultMulticastPort}); |
| |
| // Imitate a call to OnRead from NetworkRunner by calling it manually here |
| EXPECT_CALL(delegate, OnMessageReceived(message)).Times(1); |
| receiver.OnRead(&socket, std::move(packet)); |
| |
| receiver.Stop(); |
| } |
| |
| TEST(MdnsReceiverTest, ReceiveResponse) { |
| // clang-format off |
| const std::vector<uint8_t> kResponseBytes = { |
| 0x00, 0x01, // ID = 1 |
| 0x84, 0x00, // FLAGS = AA | RESPONSE |
| 0x00, 0x00, // Question count |
| 0x00, 0x01, // Answer count |
| 0x00, 0x00, // Authority count |
| 0x00, 0x00, // Additional count |
| // Answer |
| 0x07, 't', 'e', 's', 't', 'i', 'n', 'g', |
| 0x05, 'l', 'o', 'c', 'a', 'l', |
| 0x00, |
| 0x00, 0x01, // TYPE = A (1) |
| 0x00, 0x01, // CLASS = IN (1) |
| 0x00, 0x00, 0x00, 0x78, // TTL = 120 seconds |
| 0x00, 0x04, // RDLENGTH = 4 bytes |
| 0xac, 0x00, 0x00, 0x01, // 172.0.0.1 |
| }; |
| |
| constexpr uint16_t kIPv6AddressHextets[] = { |
| 0xfe80, 0x0000, 0x0000, 0x0000, |
| 0x0202, 0xb3ff, 0xfe1e, 0x8329, |
| }; |
| // clang-format on |
| |
| Config config; |
| FakeUdpSocket socket; |
| MockMdnsReceiverDelegate delegate; |
| MdnsReceiver receiver(config); |
| receiver.AddResponseCallback(&delegate); |
| receiver.Start(); |
| |
| MdnsRecord record(DomainName{"testing", "local"}, DnsType::kA, DnsClass::kIN, |
| RecordType::kShared, std::chrono::seconds(120), |
| ARecordRdata(IPAddress{172, 0, 0, 1})); |
| MdnsMessage message(1, MessageType::Response); |
| message.AddAnswer(record); |
| |
| UdpPacket packet(kResponseBytes.size()); |
| packet.assign(kResponseBytes.data(), |
| kResponseBytes.data() + kResponseBytes.size()); |
| packet.set_source( |
| IPEndpoint{.address = IPAddress(kIPv6AddressHextets), .port = 31337}); |
| packet.set_destination( |
| IPEndpoint{.address = IPAddress(kDefaultMulticastGroupIPv6), |
| .port = kDefaultMulticastPort}); |
| |
| // Imitate a call to OnRead from NetworkRunner by calling it manually here |
| EXPECT_CALL(delegate, OnMessageReceived(message)).Times(1); |
| receiver.OnRead(&socket, std::move(packet)); |
| |
| receiver.Stop(); |
| receiver.RemoveResponseCallback(&delegate); |
| } |
| |
| } // namespace discovery |
| } // namespace openscreen |