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Codec changes to support ACK_RECEIVE_TIMESTAMPS

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Summary: Create a new ACK_RECEIVE_TIMESTAMPS frame, as outlined in https://www.ietf.org/archive/id/draft-smith-quic-receive-ts-00.html#name-ack_receive_timestamps-fram

Reviewed By: mjoras

Differential Revision: D37799050

fbshipit-source-id: 0157c7fa7c4e489bb310f7c9cd6c0c1877e4967f
This commit is contained in:
Sharad Jaiswal (Eng)
2022-11-16 13:02:27 -08:00
committed by Facebook GitHub Bot
parent 9ef63d6b46
commit 96abc8160d
23 changed files with 1468 additions and 185 deletions
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31
quic/client/state/ClientStateMachine.cpp
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@@ -10,7 +10,9 @@
#include <quic/loss/QuicLossFunctions.h>
#include <folly/io/async/AsyncSocketException.h>
#include <quic/QuicConstants.h>
#include <quic/client/handshake/CachedServerTransportParameters.h>
#include <quic/codec/Decode.h>
#include <quic/common/TimeUtil.h>
#include <quic/congestion_control/CongestionControllerFactory.h>
#include <quic/congestion_control/QuicCubic.h>
@@ -54,7 +56,9 @@ std::unique_ptr<QuicClientConnectionState> undoAllClientStateForRetry(
newConn->readCodec = std::make_unique<QuicReadCodec>(QuicNodeType::Client);
newConn->readCodec->setClientConnectionId(*conn->clientConnectionId);
newConn->readCodec->setCodecParameters(CodecParameters(
conn->peerAckDelayExponent, conn->originalVersion.value()));
conn->peerAckDelayExponent,
conn->originalVersion.value(),
conn->transportSettings.maybeAckReceiveTimestampsConfigSentToPeer));
newConn->earlyDataAppParamsValidator =
std::move(conn->earlyDataAppParamsValidator);
newConn->earlyDataAppParamsGetter = std::move(conn->earlyDataAppParamsGetter);
@@ -134,6 +138,15 @@ void processServerInitialParams(
auto minAckDelay = getIntegerParameter(
TransportParameterId::min_ack_delay, serverParams.parameters);
auto isAckReceiveTimestampsEnabled = getIntegerParameter(
TransportParameterId::ack_receive_timestamps_enabled,
serverParams.parameters);
auto maxReceiveTimestampsPerAck = getIntegerParameter(
TransportParameterId::max_receive_timestamps_per_ack,
serverParams.parameters);
auto receiveTimestampsExponent = getIntegerParameter(
TransportParameterId::receive_timestamps_exponent,
serverParams.parameters);
if (conn.version == QuicVersion::QUIC_DRAFT ||
conn.version == QuicVersion::QUIC_V1 ||
conn.version == QuicVersion::QUIC_V1_ALIAS) {
@@ -224,7 +237,7 @@ void processServerInitialParams(
: conn.transportSettings.advertisedInitialBidiRemoteStreamWindowSize;
handleStreamWindowUpdate(s, windowSize, packetNum);
});
if (maxDatagramFrameSize.hasValue()) {
if (maxDatagramFrameSize.has_value()) {
if (maxDatagramFrameSize.value() > 0 &&
maxDatagramFrameSize.value() <= kMaxDatagramPacketOverhead) {
throw QuicTransportException(
@@ -237,6 +250,20 @@ void processServerInitialParams(
if (peerMaxStreamGroupsAdvertized) {
conn.peerMaxStreamGroupsAdvertized = *peerMaxStreamGroupsAdvertized;
}
if (isAckReceiveTimestampsEnabled.has_value() &&
isAckReceiveTimestampsEnabled.value() == 1) {
if (maxReceiveTimestampsPerAck.has_value() &&
receiveTimestampsExponent.has_value()) {
conn.maybePeerAckReceiveTimestampsConfig.assign(
{std::min(
static_cast<uint8_t>(maxReceiveTimestampsPerAck.value()),
kMaxReceivedPktsTimestampsStored),
std::max(
static_cast<uint8_t>(receiveTimestampsExponent.value()),
static_cast<uint8_t>(0))});
}
}
}
void cacheServerInitialParams(