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refactor unit tests for retry/new tokens
Summary: - unit tests were getting a bit hard to follow, refactored them a bit Reviewed By: jbeshay, mjoras Differential Revision: D45553440 fbshipit-source-id: 3c0c56260271a186d9a6f000bc37ea1b1a0fed68
This commit is contained in:
Hani Damlaj
committed by
Facebook GitHub Bot
Facebook GitHub Bot
parent
a599b81d9c
commit
e32f91625c
@@ -205,32 +205,11 @@ class QuicServerWorkerTest : public Test {
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ShortHeader shortHeader,
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PacketDropReason dropReason);
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std::string testSendRetry(
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ConnectionId& srcConnId,
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ConnectionId& dstConnId,
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const folly::SocketAddress& clientAddr);
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std::string testSendRetryUnfinished(
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ConnectionId& srcConnId,
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ConnectionId& dstConnId,
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const folly::SocketAddress& clientAddr);
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void testSendInitialWithRetryToken(
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const std::string& retryToken,
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ConnectionId& srcConnId,
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ConnectionId& dstConnId,
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const folly::SocketAddress& clientAddr);
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void expectConnCreateRefused();
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void createQuicConnectionDuringShedding(
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const folly::SocketAddress& addr,
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ConnectionId connId);
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void expectServerRetryPacketWrite(
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std::string& encryptedRetryToken,
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ConnectionId& dstConnId,
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const folly::SocketAddress& clientAddr);
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protected:
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folly::SocketAddress fakeAddress_;
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folly::EventBase eventbase_;
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@@ -380,136 +359,6 @@ void QuicServerWorkerTest::testSendReset(
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eventbase_.loopIgnoreKeepAlive();
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}
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/**
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* Helper method that expects a socketPtr_->write() contains a retry packet, and
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* retrieves the token value from its header. Sets the retry token value to the
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* encryptedRetryToken parameter.
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*/
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void QuicServerWorkerTest::expectServerRetryPacketWrite(
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std::string& encryptedRetryToken,
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ConnectionId& dstConnId,
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const folly::SocketAddress& clientAddr) {
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EXPECT_CALL(*quicStats_, onConnectionRateLimited()).Times(1);
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EXPECT_CALL(*quicStats_, onWrite(_)).Times(1);
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EXPECT_CALL(*quicStats_, onPacketSent()).Times(1);
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EXPECT_CALL(*socketPtr_, write(_, _))
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.WillOnce(Invoke([&](const folly::SocketAddress&,
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const std::unique_ptr<folly::IOBuf>& buf) {
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// Validate that the retry packet has been created
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QuicReadCodec codec(QuicNodeType::Client);
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auto packetQueue = bufToQueue(buf->clone());
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AckStates ackStates;
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auto parsedPacket = codec.parsePacket(packetQueue, ackStates);
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EXPECT_NE(parsedPacket.retryPacket(), nullptr);
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// Validate the generated retry token
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RetryPacket* retryPacket = parsedPacket.retryPacket();
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EXPECT_TRUE(retryPacket->header.hasToken());
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encryptedRetryToken = retryPacket->header.getToken();
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auto tokenBuf = folly::IOBuf::copyBuffer(encryptedRetryToken);
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TokenGenerator generator(tokenSecret_);
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RetryToken token(dstConnId, clientAddr.getIPAddress(), 0);
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auto maybeDecryptedTokenMs = generator.decryptToken(
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std::move(tokenBuf), token.genAeadAssocData());
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EXPECT_TRUE(maybeDecryptedTokenMs);
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return buf->computeChainDataLength();
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}));
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}
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// Helper method to send a client initial to the server
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// Will return the encrypted retry token
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std::string QuicServerWorkerTest::testSendRetry(
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ConnectionId& srcConnId,
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ConnectionId& dstConnId,
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const folly::SocketAddress& clientAddr) {
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// Retry packet will only be sent if rate-limiting is configured
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worker_->setRateLimiter(
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std::make_unique<SlidingWindowRateLimiter>([]() { return 0; }, 60s));
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// Send a client inital to the server - the server will respond with retry
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// packet
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RoutingData routingData(
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HeaderForm::Long, true, false, true, dstConnId, srcConnId);
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auto data = createData(kMinInitialPacketSize);
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std::string encryptedRetryToken;
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expectServerRetryPacketWrite(encryptedRetryToken, dstConnId, clientAddr);
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worker_->dispatchPacketData(
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clientAddr,
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std::move(routingData),
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NetworkData(data->clone(), Clock::now()),
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QuicVersion::MVFST);
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eventbase_.loopIgnoreKeepAlive();
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return encryptedRetryToken;
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}
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std::string QuicServerWorkerTest::testSendRetryUnfinished(
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ConnectionId& srcConnId,
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ConnectionId& dstConnId,
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const folly::SocketAddress& clientAddr) {
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worker_->setUnfinishedHandshakeLimit([]() { return 0; });
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// Send a client inital to the server - the server will respond with retry
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// packet
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RoutingData routingData(
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HeaderForm::Long, true, false, true, dstConnId, srcConnId);
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auto data = createData(kMinInitialPacketSize);
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std::string encryptedRetryToken;
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expectServerRetryPacketWrite(encryptedRetryToken, dstConnId, clientAddr);
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worker_->dispatchPacketData(
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clientAddr,
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std::move(routingData),
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NetworkData(data->clone(), Clock::now()),
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QuicVersion::MVFST);
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eventbase_.loopIgnoreKeepAlive();
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return encryptedRetryToken;
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}
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// Helper method to send a client initial that contains the retry token to the
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// server in response to the retry packet
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void QuicServerWorkerTest::testSendInitialWithRetryToken(
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const std::string& retryToken,
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ConnectionId& srcConnId,
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ConnectionId& dstConnId,
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const folly::SocketAddress& clientAddr) {
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QuicVersion version = QuicVersion::MVFST;
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PacketNum num = 1;
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LongHeader initialHeader(
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LongHeader::Types::Initial,
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srcConnId,
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dstConnId,
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num,
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version,
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retryToken);
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RegularQuicPacketBuilder initialBuilder(
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kDefaultUDPSendPacketLen, std::move(initialHeader), 0);
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initialBuilder.encodePacketHeader();
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while (initialBuilder.remainingSpaceInPkt() > 0) {
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writeFrame(PaddingFrame(), initialBuilder);
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}
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auto initialPacket = packetToBuf(std::move(initialBuilder).buildPacket());
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RoutingData routingData(
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HeaderForm::Long, true, false, true, dstConnId, srcConnId);
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worker_->dispatchPacketData(
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clientAddr,
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std::move(routingData),
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NetworkData(initialPacket->clone(), Clock::now()),
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version);
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}
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TEST_F(QuicServerWorkerTest, HostIdMismatchTestReset) {
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auto data = folly::IOBuf::copyBuffer("data");
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EXPECT_CALL(*socketPtr_, address()).WillRepeatedly(ReturnRef(fakeAddress_));
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@@ -762,103 +611,6 @@ TEST_F(QuicServerWorkerTest, UnfinishedHandshakeLimit) {
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eventbase_.loopIgnoreKeepAlive();
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}
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// Validate that when the worker receives a valid NewToken, it invokes
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// transportInfo->onNewTokenReceived().
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TEST_F(QuicServerWorkerTest, TestNewTokenStatsCallback) {
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EXPECT_CALL(*quicStats_, onNewTokenReceived());
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NewToken newToken(kClientAddr.getIPAddress());
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// Create the encrypted retry token
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TokenGenerator generator(tokenSecret_);
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auto encryptedToken = generator.encryptToken(newToken);
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CHECK(encryptedToken.has_value());
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std::string encryptedTokenStr =
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encryptedToken.value()->moveToFbString().toStdString();
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auto dstConnId = getTestConnectionId(hostId_);
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auto srcConnId = getTestConnectionId(0);
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// we piggyback the retrytoken logic with a new token
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testSendInitialWithRetryToken(
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encryptedTokenStr, srcConnId, dstConnId, kClientAddr);
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}
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TEST_F(QuicServerWorkerTest, TestRetryValidInitial) {
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// The second client initial packet with the retry token is valid
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// as the client IP is the same as the one stored in the retry token
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auto dstConnId = getTestConnectionId(hostId_);
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auto srcConnId = getTestConnectionId(0);
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expectConnectionCreation(kClientAddr, transport_);
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EXPECT_CALL(*transport_, setRoutingCallback(nullptr));
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EXPECT_CALL(*transport_, setTransportStatsCallback(nullptr));
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auto retryToken = testSendRetry(srcConnId, dstConnId, kClientAddr);
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testSendInitialWithRetryToken(retryToken, srcConnId, dstConnId, kClientAddr);
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}
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TEST_F(QuicServerWorkerTest, TestRetryUnfinishedValidInitial) {
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// The second client initial packet with the retry token is valid
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// as the client IP is the same as the one stored in the retry token
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auto dstConnId = getTestConnectionId(hostId_);
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auto srcConnId = getTestConnectionId(0);
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expectConnectionCreation(kClientAddr, transport_);
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EXPECT_CALL(*transport_, setRoutingCallback(nullptr));
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EXPECT_CALL(*transport_, setTransportStatsCallback(nullptr));
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auto retryToken = testSendRetryUnfinished(srcConnId, dstConnId, kClientAddr);
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testSendInitialWithRetryToken(retryToken, srcConnId, dstConnId, kClientAddr);
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}
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TEST_F(QuicServerWorkerTest, TestRetryInvalidInitialClientIp) {
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// The second client initial packet with the retry token is invalid
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// as the client IP is different from the one stored in the retry token
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auto dstConnId = getTestConnectionId(hostId_);
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auto srcConnId = getTestConnectionId(0);
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auto retryToken = testSendRetry(srcConnId, dstConnId, kClientAddr);
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// Rate limited servers will issue an retry packet in response to invalid
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// retry tokens
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std::string encryptedRetryToken;
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expectServerRetryPacketWrite(encryptedRetryToken, dstConnId, kClientAddr2);
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EXPECT_CALL(*quicStats_, onTokenDecryptFailure()).Times(1);
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testSendInitialWithRetryToken(retryToken, srcConnId, dstConnId, kClientAddr2);
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}
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TEST_F(QuicServerWorkerTest, TestRetryUnfinishedInvalidInitialClientIp) {
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// The second client initial packet with the retry token is invalid
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// as the client IP is different from the one stored in the retry token
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EXPECT_CALL(*quicStats_, onTokenDecryptFailure()).Times(1);
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auto dstConnId = getTestConnectionId(hostId_);
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auto srcConnId = getTestConnectionId(0);
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auto retryToken = testSendRetryUnfinished(srcConnId, dstConnId, kClientAddr);
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std::string _;
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expectServerRetryPacketWrite(_, dstConnId, kClientAddr2);
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testSendInitialWithRetryToken(retryToken, srcConnId, dstConnId, kClientAddr2);
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}
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TEST_F(QuicServerWorkerTest, TestRetryInvalidInitialDstConnId) {
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// Dest conn ID is invalid as it is different from the original dst conn ID
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EXPECT_CALL(*quicStats_, onTokenDecryptFailure()).Times(1);
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auto dstConnId = getTestConnectionId(hostId_);
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auto srcConnId = getTestConnectionId(0);
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auto retryToken = testSendRetry(srcConnId, dstConnId, kClientAddr);
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auto invalidDstConnId = getTestConnectionId(1);
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// Rate limited servers will issue an retry packet in response to invalid
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// retry tokens
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std::string encryptedRetryToken;
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expectServerRetryPacketWrite(
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encryptedRetryToken, invalidDstConnId, kClientAddr);
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testSendInitialWithRetryToken(
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retryToken, srcConnId, invalidDstConnId, kClientAddr);
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}
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TEST_F(QuicServerWorkerTest, QuicServerWorkerUnbindBeforeCidAvailable) {
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NiceMock<MockConnectionSetupCallback> connSetupCb;
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NiceMock<MockConnectionCallback> connCb;
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@@ -1721,6 +1473,213 @@ ConnectionId createConnIdForServer(ProcessId server) {
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return *connIdAlgo->encodeConnectionId(params);
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}
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class QuicServerWorkerRetryTest : public QuicServerWorkerTest {
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public:
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// Helper method to send a client initial that may contain the retry token to
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// the server in response to the retry packet
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void testSendInitial(
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ConnectionId& clientSrcConnId,
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ConnectionId& dstConnId,
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const folly::SocketAddress& clientAddr,
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const std::string& retryToken = "") {
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QuicVersion version = QuicVersion::MVFST;
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PacketNum num = 1;
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LongHeader initialHeader(
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LongHeader::Types::Initial,
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clientSrcConnId,
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dstConnId,
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num,
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version,
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retryToken);
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RegularQuicPacketBuilder initialBuilder(
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kDefaultUDPSendPacketLen, std::move(initialHeader), 0);
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initialBuilder.encodePacketHeader();
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while (initialBuilder.remainingSpaceInPkt() > 0) {
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writeFrame(PaddingFrame(), initialBuilder);
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}
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auto initialPacket = packetToBuf(std::move(initialBuilder).buildPacket());
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RoutingData routingData(
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HeaderForm::Long, true, false, true, dstConnId, clientSrcConnId);
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worker_->dispatchPacketData(
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clientAddr,
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std::move(routingData),
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NetworkData(initialPacket->clone(), Clock::now()),
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version);
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eventbase_.loopIgnoreKeepAlive();
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}
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/**
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* Helper method that expects a socketPtr_->write() contains a retry packet,
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* and retrieves the token value from its header. Sets the retry token value
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* to the encryptedRetryToken parameter.
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*/
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void expectServerRetryPacketWrite(std::string& encryptedRetryToken) {
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EXPECT_CALL(*quicStats_, onConnectionRateLimited()).Times(1);
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EXPECT_CALL(*quicStats_, onWrite(_)).Times(1);
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EXPECT_CALL(*quicStats_, onPacketSent()).Times(1);
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EXPECT_CALL(*socketPtr_, write(_, _))
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.WillOnce(Invoke([&](const folly::SocketAddress& clientAddr,
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const std::unique_ptr<folly::IOBuf>& buf) {
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// Validate that the retry packet has been created
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QuicReadCodec codec(QuicNodeType::Client);
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auto packetQueue = bufToQueue(buf->clone());
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AckStates ackStates;
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auto parsedPacket = codec.parsePacket(packetQueue, ackStates);
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auto* retryPacket = parsedPacket.retryPacket();
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CHECK(retryPacket);
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const ConnectionId& serverChosenRetrySrcConnId =
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retryPacket->header.getSourceConnId();
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// Validate the generated retry token
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EXPECT_TRUE(retryPacket->header.hasToken());
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encryptedRetryToken = retryPacket->header.getToken();
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auto tokenBuf = folly::IOBuf::copyBuffer(encryptedRetryToken);
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TokenGenerator generator(tokenSecret_);
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RetryToken token(
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serverChosenRetrySrcConnId, clientAddr.getIPAddress(), 0);
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auto maybeDecryptedTokenMs = generator.decryptToken(
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std::move(tokenBuf), token.genAeadAssocData());
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CHECK(maybeDecryptedTokenMs > 0);
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return buf->computeChainDataLength();
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}));
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}
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void enableRateLimiterForRetry() {
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// Retry packet will only be sent if rate-limiting is configured
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worker_->setRateLimiter(
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std::make_unique<SlidingWindowRateLimiter>([]() { return 0; }, 60s));
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}
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void enableUnfinishedHandshakeLimitForRetry() {
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worker_->setUnfinishedHandshakeLimit([]() { return 0; });
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}
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};
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// Validate that when the worker receives a valid NewToken, it invokes
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// transportInfo->onNewTokenReceived().
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TEST_F(QuicServerWorkerRetryTest, TestNewTokenStatsCallback) {
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EXPECT_CALL(*quicStats_, onNewTokenReceived());
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NewToken newToken(kClientAddr.getIPAddress());
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// Create the encrypted retry token
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TokenGenerator generator(tokenSecret_);
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auto encryptedToken = generator.encryptToken(newToken);
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CHECK(encryptedToken.has_value());
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std::string encryptedTokenStr =
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encryptedToken.value()->moveToFbString().toStdString();
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auto dstConnId = getTestConnectionId(hostId_);
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auto srcConnId = getTestConnectionId(0);
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testSendInitial(srcConnId, dstConnId, kClientAddr, encryptedTokenStr);
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}
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TEST_F(QuicServerWorkerRetryTest, TestRetryValidInitial) {
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// The second client initial packet with the retry token is valid
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// as the client IP is the same as the one stored in the retry token
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enableRateLimiterForRetry();
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auto dstConnId = getTestConnectionId(hostId_);
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auto srcConnId = getTestConnectionId(0);
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expectConnectionCreation(kClientAddr, transport_);
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EXPECT_CALL(*transport_, setRoutingCallback(nullptr));
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EXPECT_CALL(*transport_, setTransportStatsCallback(nullptr));
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// send initial to extract the retry token sent by the server
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std::string retryToken{""};
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expectServerRetryPacketWrite(retryToken);
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testSendInitial(srcConnId, dstConnId, kClientAddr);
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// test that the retry token extracted is accepted by the server
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testSendInitial(srcConnId, dstConnId, kClientAddr, retryToken);
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}
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TEST_F(QuicServerWorkerRetryTest, TestRetryUnfinishedValidInitial) {
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// The second client initial packet with the retry token is valid
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// as the client IP is the same as the one stored in the retry token
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enableUnfinishedHandshakeLimitForRetry();
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auto dstConnId = getTestConnectionId(hostId_);
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auto srcConnId = getTestConnectionId(0);
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expectConnectionCreation(kClientAddr, transport_);
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EXPECT_CALL(*transport_, setRoutingCallback(nullptr));
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EXPECT_CALL(*transport_, setTransportStatsCallback(nullptr));
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// send initial to extract the retry token sent by the server
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std::string retryToken{""};
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expectServerRetryPacketWrite(retryToken);
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testSendInitial(srcConnId, dstConnId, kClientAddr);
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// test that the retry token extracted is accepted by the server
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testSendInitial(srcConnId, dstConnId, kClientAddr, retryToken);
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}
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TEST_F(QuicServerWorkerRetryTest, TestRetryInvalidInitialClientIp) {
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// The second client initial packet with the retry token is invalid
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// as the client IP is different from the one stored in the retry token
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enableRateLimiterForRetry();
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auto dstConnId = getTestConnectionId(hostId_);
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auto srcConnId = getTestConnectionId(0);
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// send initial to extract the retry token sent by the server
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std::string retryToken{""};
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expectServerRetryPacketWrite(retryToken);
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testSendInitial(srcConnId, dstConnId, kClientAddr);
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// send another client initial with the retry token rx'd above but with a
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// different client addr to verify it's invalid (i.e. will send another retry
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// packet)
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EXPECT_CALL(*quicStats_, onTokenDecryptFailure()).Times(1);
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expectServerRetryPacketWrite(retryToken);
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testSendInitial(srcConnId, dstConnId, kClientAddr2, retryToken);
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}
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TEST_F(QuicServerWorkerRetryTest, TestRetryUnfinishedInvalidInitialClientIp) {
|
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// The second client initial packet with the retry token is invalid
|
||||
// as the client IP is different from the one stored in the retry token
|
||||
enableUnfinishedHandshakeLimitForRetry();
|
||||
|
||||
auto dstConnId = getTestConnectionId(hostId_);
|
||||
auto srcConnId = getTestConnectionId(0);
|
||||
|
||||
// send initial to extract the retry token sent by the server
|
||||
std::string retryToken{""};
|
||||
expectServerRetryPacketWrite(retryToken);
|
||||
testSendInitial(srcConnId, dstConnId, kClientAddr);
|
||||
|
||||
// send another client initial with the retry token rx'd above but with a
|
||||
// different client addr to verify it's invalid
|
||||
EXPECT_CALL(*quicStats_, onTokenDecryptFailure()).Times(1);
|
||||
expectServerRetryPacketWrite(retryToken);
|
||||
testSendInitial(srcConnId, dstConnId, kClientAddr2, retryToken);
|
||||
}
|
||||
|
||||
TEST_F(QuicServerWorkerRetryTest, TestRetryInvalidInitialDstConnId) {
|
||||
enableRateLimiterForRetry();
|
||||
auto dstConnId = getTestConnectionId(hostId_);
|
||||
auto srcConnId = getTestConnectionId(0);
|
||||
|
||||
// send initial to extract the retry token sent by the server
|
||||
std::string retryToken{""};
|
||||
expectServerRetryPacketWrite(retryToken);
|
||||
testSendInitial(srcConnId, dstConnId, kClientAddr);
|
||||
|
||||
// send another client initial with the retry token rx'd above but with a
|
||||
// different dst conn id to verify it's invalid (i.e. will send another retry
|
||||
// packet)
|
||||
auto invalidDstConnId = getTestConnectionId(1);
|
||||
EXPECT_CALL(*quicStats_, onTokenDecryptFailure()).Times(1);
|
||||
expectServerRetryPacketWrite(retryToken);
|
||||
testSendInitial(srcConnId, invalidDstConnId, kClientAddr, retryToken);
|
||||
}
|
||||
|
||||
class QuicServerWorkerTakeoverTest : public Test {
|
||||
public:
|
||||
void SetUp() override {
|
||||
|
||||
Reference in New Issue
Block a user