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Custom variant type for packetheader

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Summary:
Make a custom variant type for PacketHeader. By not relying on boost::variant
this reduces the code size of the implementation.

This uses a combination of a union type as well as a enum type to emulate a variant

Reviewed By: yangchi

Differential Revision: D17187589

fbshipit-source-id: 00c2b9b8dd3f3e73af766d84888b13b9d867165a
This commit is contained in:
Subodh Iyengar
2019-09-19 17:30:13 -07:00
committed by Facebook Github Bot
parent c8da36d755
commit 04baa15a04
39 changed files with 593 additions and 641 deletions
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24
quic/api/test/QuicTransportFunctionsTest.cpp
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@@ -385,28 +385,20 @@ TEST_F(QuicTransportFunctionsTest, TestUpdateConnectionPacketSorting) {
EXPECT_EQ(3, conn->outstandingPackets.size());
auto& firstHeader = conn->outstandingPackets.front().packet.header;
auto firstPacketNum = folly::variant_match(
firstHeader, [](const auto& h) { return h.getPacketSequenceNum(); });
auto firstPacketNum = firstHeader.getPacketSequenceNum();
EXPECT_EQ(0, firstPacketNum);
EXPECT_EQ(1, event1->packetNum);
EXPECT_EQ(
PacketNumberSpace::Initial,
folly::variant_match(
firstHeader, [](const auto& h) { return h.getPacketNumberSpace(); }));
EXPECT_EQ(PacketNumberSpace::Initial, firstHeader.getPacketNumberSpace());
auto& lastHeader = conn->outstandingPackets.back().packet.header;
auto lastPacketNum = folly::variant_match(
lastHeader, [](const auto& h) { return h.getPacketSequenceNum(); });
auto lastPacketNum = lastHeader.getPacketSequenceNum();
EXPECT_EQ(2, lastPacketNum);
EXPECT_EQ(2, event3->packetNum);
EXPECT_EQ(
PacketNumberSpace::AppData,
folly::variant_match(
lastHeader, [](const auto& h) { return h.getPacketNumberSpace(); }));
EXPECT_EQ(PacketNumberSpace::AppData, lastHeader.getPacketNumberSpace());
}
TEST_F(QuicTransportFunctionsTest, TestUpdateConnectionFinOnly) {
@@ -891,9 +883,7 @@ TEST_F(QuicTransportFunctionsTest, TestUpdateConnectionStreamWindowUpdate) {
auto conn = createConn();
conn->qLogger = std::make_shared<quic::FileQLogger>();
auto packet = buildEmptyPacket(*conn, PacketNumberSpace::Handshake);
auto packetNum = folly::variant_match(
packet.packet.header,
[](const auto& h) { return h.getPacketSequenceNum(); });
auto packetNum = packet.packet.header.getPacketSequenceNum();
auto stream = conn->streamManager->createNextBidirectionalStream().value();
MaxStreamDataFrame streamWindowUpdate(stream->id, 0);
conn->streamManager->queueWindowUpdate(stream->id);
@@ -928,9 +918,7 @@ TEST_F(QuicTransportFunctionsTest, TestUpdateConnectionConnWindowUpdate) {
auto conn = createConn();
conn->qLogger = std::make_shared<quic::FileQLogger>();
auto packet = buildEmptyPacket(*conn, PacketNumberSpace::Handshake);
auto packetNum = folly::variant_match(
packet.packet.header,
[](const auto& h) { return h.getPacketSequenceNum(); });
auto packetNum = packet.packet.header.getPacketSequenceNum();
conn->pendingEvents.connWindowUpdate = true;
auto stream = conn->streamManager->createNextBidirectionalStream().value();
MaxDataFrame connWindowUpdate(conn->flowControlState.advertisedMaxOffset);