| // 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_sender.h" |
| |
| #include <memory> |
| #include <vector> |
| |
| #include "discovery/mdns/mdns_records.h" |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| #include "platform/test/fake_udp_socket.h" |
| #include "platform/test/mock_udp_socket.h" |
| |
| namespace openscreen { |
| namespace discovery { |
| |
| using testing::_; |
| using testing::Args; |
| using testing::Return; |
| using testing::StrictMock; |
| using testing::WithArgs; |
| |
| namespace { |
| |
| ACTION_P(VoidPointerMatchesBytes, expected_data) { |
| const uint8_t* actual_data = static_cast<const uint8_t*>(arg0); |
| for (size_t i = 0; i < expected_data.size(); ++i) { |
| EXPECT_EQ(actual_data[i], expected_data[i]); |
| } |
| } |
| |
| } // namespace |
| |
| class MdnsSenderTest : public testing::Test { |
| public: |
| MdnsSenderTest() |
| : a_question_(DomainName{"testing", "local"}, |
| DnsType::kA, |
| DnsClass::kIN, |
| ResponseType::kMulticast), |
| a_record_(DomainName{"testing", "local"}, |
| DnsType::kA, |
| DnsClass::kIN, |
| RecordType::kShared, |
| std::chrono::seconds(120), |
| ARecordRdata(IPAddress{172, 0, 0, 1})), |
| query_message_(1, MessageType::Query), |
| response_message_(1, MessageType::Response), |
| ipv4_multicast_endpoint_{ |
| .address = IPAddress(kDefaultMulticastGroupIPv4), |
| .port = kDefaultMulticastPort}, |
| ipv6_multicast_endpoint_{ |
| .address = IPAddress(kDefaultMulticastGroupIPv6), |
| .port = kDefaultMulticastPort} { |
| query_message_.AddQuestion(a_question_); |
| response_message_.AddAnswer(a_record_); |
| } |
| |
| protected: |
| // 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) |
| }; |
| |
| 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 |
| }; |
| // clang-format on |
| |
| MdnsQuestion a_question_; |
| MdnsRecord a_record_; |
| MdnsMessage query_message_; |
| MdnsMessage response_message_; |
| IPEndpoint ipv4_multicast_endpoint_; |
| IPEndpoint ipv6_multicast_endpoint_; |
| }; |
| |
| TEST_F(MdnsSenderTest, SendMulticast) { |
| StrictMock<MockUdpSocket> socket; |
| EXPECT_CALL(socket, IsIPv4()).WillRepeatedly(Return(true)); |
| EXPECT_CALL(socket, IsIPv6()).WillRepeatedly(Return(true)); |
| MdnsSender sender(&socket); |
| EXPECT_CALL(socket, SendMessage(_, kQueryBytes.size(), _)) |
| .WillOnce(WithArgs<0>(VoidPointerMatchesBytes(kQueryBytes))); |
| EXPECT_EQ(sender.SendMulticast(query_message_), Error::Code::kNone); |
| } |
| |
| TEST_F(MdnsSenderTest, SendUnicastIPv4) { |
| IPEndpoint endpoint{.address = IPAddress{192, 168, 1, 1}, .port = 31337}; |
| |
| StrictMock<MockUdpSocket> socket; |
| MdnsSender sender(&socket); |
| EXPECT_CALL(socket, SendMessage(_, kResponseBytes.size(), _)) |
| .WillOnce(WithArgs<0>(VoidPointerMatchesBytes(kResponseBytes))); |
| EXPECT_EQ(sender.SendMessage(response_message_, endpoint), |
| Error::Code::kNone); |
| } |
| |
| TEST_F(MdnsSenderTest, SendUnicastIPv6) { |
| constexpr uint16_t kIPv6AddressHextets[] = { |
| 0xfe80, 0x0000, 0x0000, 0x0000, 0x0202, 0xb3ff, 0xfe1e, 0x8329, |
| }; |
| IPEndpoint endpoint{.address = IPAddress(kIPv6AddressHextets), .port = 31337}; |
| |
| StrictMock<MockUdpSocket> socket; |
| MdnsSender sender(&socket); |
| EXPECT_CALL(socket, SendMessage(_, kResponseBytes.size(), _)) |
| .WillOnce(WithArgs<0>(VoidPointerMatchesBytes(kResponseBytes))); |
| EXPECT_EQ(sender.SendMessage(response_message_, endpoint), |
| Error::Code::kNone); |
| } |
| |
| TEST_F(MdnsSenderTest, MessageTooBig) { |
| MdnsMessage big_message_(1, MessageType::Query); |
| for (size_t i = 0; i < 100; ++i) { |
| big_message_.AddQuestion(a_question_); |
| big_message_.AddAnswer(a_record_); |
| } |
| |
| StrictMock<MockUdpSocket> socket; |
| EXPECT_CALL(socket, IsIPv4()).WillRepeatedly(Return(true)); |
| EXPECT_CALL(socket, IsIPv6()).WillRepeatedly(Return(true)); |
| MdnsSender sender(&socket); |
| EXPECT_EQ(sender.SendMulticast(big_message_), |
| Error::Code::kInsufficientBuffer); |
| } |
| |
| TEST_F(MdnsSenderTest, ReturnsErrorOnSocketFailure) { |
| FakeUdpSocket::MockClient socket_client; |
| FakeUdpSocket socket(nullptr, &socket_client); |
| MdnsSender sender(&socket); |
| Error error = Error(Error::Code::kConnectionFailed, "error message"); |
| socket.EnqueueSendResult(error); |
| EXPECT_CALL(socket_client, OnSendError(_, error)).Times(1); |
| EXPECT_EQ(sender.SendMulticast(query_message_), Error::Code::kNone); |
| EXPECT_EQ(socket.send_queue_size(), size_t{0}); |
| } |
| |
| } // namespace discovery |
| } // namespace openscreen |