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#include "quiche/spdy/core/metadata_extension.h"
#include "absl/container/flat_hash_map.h"
#include "absl/functional/bind_front.h"
#include "absl/strings/str_cat.h"
#include "absl/strings/string_view.h"
#include "quiche/common/platform/api/quiche_test.h"
#include "quiche/spdy/core/array_output_buffer.h"
#include "quiche/spdy/core/mock_spdy_framer_visitor.h"
#include "quiche/spdy/core/spdy_framer.h"
#include "quiche/spdy/core/spdy_header_block.h"
#include "quiche/spdy/core/spdy_no_op_visitor.h"
#include "quiche/spdy/core/spdy_protocol.h"
namespace spdy {
namespace test {
namespace {
using ::absl::bind_front;
using ::spdy::SpdyFramer;
using ::spdy::SpdyHeaderBlock;
using ::spdy::test::MockSpdyFramerVisitor;
using ::testing::_;
using ::testing::ElementsAre;
using ::testing::IsEmpty;
const size_t kBufferSize = 64 * 1024;
char kBuffer[kBufferSize];
class MetadataExtensionTest : public QuicheTest {
protected:
MetadataExtensionTest() : test_buffer_(kBuffer, kBufferSize) {}
void SetUp() override {
extension_ = absl::make_unique<MetadataVisitor>(
bind_front(&MetadataExtensionTest::OnCompletePayload, this),
bind_front(&MetadataExtensionTest::OnMetadataSupport, this));
}
void OnCompletePayload(spdy::SpdyStreamId stream_id,
MetadataVisitor::MetadataPayload payload) {
++received_count_;
received_payload_map_.insert(std::make_pair(stream_id, std::move(payload)));
}
void OnMetadataSupport(bool peer_supports_metadata) {
EXPECT_EQ(peer_supports_metadata, extension_->PeerSupportsMetadata());
received_metadata_support_.push_back(peer_supports_metadata);
}
MetadataSerializer::MetadataPayload PayloadForData(absl::string_view data) {
SpdyHeaderBlock block;
block["example-payload"] = data;
return block;
}
std::unique_ptr<MetadataVisitor> extension_;
absl::flat_hash_map<spdy::SpdyStreamId, SpdyHeaderBlock>
received_payload_map_;
std::vector<bool> received_metadata_support_;
size_t received_count_ = 0;
spdy::ArrayOutputBuffer test_buffer_;
};
// This test verifies that the MetadataVisitor is initialized to a state where
// it believes the peer does not support metadata.
TEST_F(MetadataExtensionTest, MetadataNotSupported) {
EXPECT_FALSE(extension_->PeerSupportsMetadata());
EXPECT_THAT(received_metadata_support_, IsEmpty());
}
// This test verifies that upon receiving a specific setting, the extension
// realizes that the peer supports metadata.
TEST_F(MetadataExtensionTest, MetadataSupported) {
EXPECT_FALSE(extension_->PeerSupportsMetadata());
// 3 is not an appropriate value for the metadata extension key.
extension_->OnSetting(MetadataVisitor::kMetadataExtensionId, 3);
EXPECT_FALSE(extension_->PeerSupportsMetadata());
extension_->OnSetting(MetadataVisitor::kMetadataExtensionId, 1);
ASSERT_TRUE(extension_->PeerSupportsMetadata());
extension_->OnSetting(MetadataVisitor::kMetadataExtensionId, 0);
EXPECT_FALSE(extension_->PeerSupportsMetadata());
EXPECT_THAT(received_metadata_support_, ElementsAre(true, false));
}
TEST_F(MetadataExtensionTest, MetadataIgnoredWithoutExtension) {
const char kData[] = "some payload";
SpdyHeaderBlock payload = PayloadForData(kData);
extension_->OnSetting(MetadataVisitor::kMetadataExtensionId, 1);
ASSERT_TRUE(extension_->PeerSupportsMetadata());
MetadataSerializer serializer;
auto sequence = serializer.FrameSequenceForPayload(3, std::move(payload));
ASSERT_TRUE(sequence != nullptr);
http2::Http2DecoderAdapter deframer;
::testing::StrictMock<MockSpdyFramerVisitor> visitor;
deframer.set_visitor(&visitor);
EXPECT_CALL(visitor,
OnCommonHeader(3, _, MetadataVisitor::kMetadataFrameType, _));
// The Return(true) should not be necessary. http://b/36023792
EXPECT_CALL(visitor, OnUnknownFrame(3, MetadataVisitor::kMetadataFrameType))
.WillOnce(::testing::Return(true));
SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
auto frame = sequence->Next();
ASSERT_TRUE(frame != nullptr);
while (frame != nullptr) {
const size_t frame_size = framer.SerializeFrame(*frame, &test_buffer_);
ASSERT_GT(frame_size, 0u);
ASSERT_FALSE(deframer.HasError());
ASSERT_EQ(frame_size, test_buffer_.Size());
EXPECT_EQ(frame_size, deframer.ProcessInput(kBuffer, frame_size));
test_buffer_.Reset();
frame = sequence->Next();
}
EXPECT_FALSE(deframer.HasError());
EXPECT_THAT(received_metadata_support_, ElementsAre(true));
}
// This test verifies that the METADATA frame emitted by a MetadataExtension
// can be parsed by another SpdyFramer with a MetadataVisitor.
TEST_F(MetadataExtensionTest, MetadataPayloadEndToEnd) {
SpdyHeaderBlock block1;
block1["foo"] = "Some metadata value.";
SpdyHeaderBlock block2;
block2["bar"] =
"The color taupe truly represents a triumph of the human spirit over "
"adversity.";
block2["baz"] =
"Or perhaps it represents abject surrender to the implacable and "
"incomprehensible forces of the universe.";
const absl::string_view binary_payload{"binary\0payload", 14};
block2["qux"] = binary_payload;
EXPECT_EQ(binary_payload, block2["qux"]);
for (const SpdyHeaderBlock& payload_block :
{std::move(block1), std::move(block2)}) {
extension_->OnSetting(MetadataVisitor::kMetadataExtensionId, 1);
ASSERT_TRUE(extension_->PeerSupportsMetadata());
MetadataSerializer serializer;
auto sequence =
serializer.FrameSequenceForPayload(3, payload_block.Clone());
ASSERT_TRUE(sequence != nullptr);
http2::Http2DecoderAdapter deframer;
::spdy::SpdyNoOpVisitor visitor;
deframer.set_visitor(&visitor);
deframer.set_extension_visitor(extension_.get());
SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
auto frame = sequence->Next();
ASSERT_TRUE(frame != nullptr);
while (frame != nullptr) {
const size_t frame_size = framer.SerializeFrame(*frame, &test_buffer_);
ASSERT_GT(frame_size, 0u);
ASSERT_FALSE(deframer.HasError());
ASSERT_EQ(frame_size, test_buffer_.Size());
EXPECT_EQ(frame_size, deframer.ProcessInput(kBuffer, frame_size));
test_buffer_.Reset();
frame = sequence->Next();
}
EXPECT_EQ(1u, received_count_);
auto it = received_payload_map_.find(3);
ASSERT_TRUE(it != received_payload_map_.end());
EXPECT_EQ(payload_block, it->second);
received_count_ = 0;
received_payload_map_.clear();
}
}
// This test verifies that METADATA frames for two different streams can be
// interleaved and still successfully parsed by another SpdyFramer with a
// MetadataVisitor.
TEST_F(MetadataExtensionTest, MetadataPayloadInterleaved) {
const std::string kData1 = std::string(65 * 1024, 'a');
const std::string kData2 = std::string(65 * 1024, 'b');
const SpdyHeaderBlock payload1 = PayloadForData(kData1);
const SpdyHeaderBlock payload2 = PayloadForData(kData2);
extension_->OnSetting(MetadataVisitor::kMetadataExtensionId, 1);
ASSERT_TRUE(extension_->PeerSupportsMetadata());
MetadataSerializer serializer;
auto sequence1 = serializer.FrameSequenceForPayload(3, payload1.Clone());
ASSERT_TRUE(sequence1 != nullptr);
auto sequence2 = serializer.FrameSequenceForPayload(5, payload2.Clone());
ASSERT_TRUE(sequence2 != nullptr);
http2::Http2DecoderAdapter deframer;
::spdy::SpdyNoOpVisitor visitor;
deframer.set_visitor(&visitor);
deframer.set_extension_visitor(extension_.get());
SpdyFramer framer(SpdyFramer::ENABLE_COMPRESSION);
auto frame1 = sequence1->Next();
ASSERT_TRUE(frame1 != nullptr);
auto frame2 = sequence2->Next();
ASSERT_TRUE(frame2 != nullptr);
while (frame1 != nullptr || frame2 != nullptr) {
for (auto frame : {frame1.get(), frame2.get()}) {
if (frame != nullptr) {
const size_t frame_size = framer.SerializeFrame(*frame, &test_buffer_);
ASSERT_GT(frame_size, 0u);
ASSERT_FALSE(deframer.HasError());
ASSERT_EQ(frame_size, test_buffer_.Size());
EXPECT_EQ(frame_size, deframer.ProcessInput(kBuffer, frame_size));
test_buffer_.Reset();
}
}
frame1 = sequence1->Next();
frame2 = sequence2->Next();
}
EXPECT_EQ(2u, received_count_);
auto it = received_payload_map_.find(3);
ASSERT_TRUE(it != received_payload_map_.end());
EXPECT_EQ(payload1, it->second);
it = received_payload_map_.find(5);
ASSERT_TRUE(it != received_payload_map_.end());
EXPECT_EQ(payload2, it->second);
}
} // anonymous namespace
} // namespace test
} // namespace spdy
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