{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
module Network.QUIC.Recovery.LossRecovery (
onPacketSent,
onPacketReceived,
onAckReceived,
onPacketNumberSpaceDiscarded,
) where
import Data.Sequence (Seq, ViewR (..), (|>))
import qualified Data.Sequence as Seq
import UnliftIO.STM
import Network.QUIC.Connector
import Network.QUIC.Imports
import Network.QUIC.Qlog
import Network.QUIC.Recovery.Constants
import Network.QUIC.Recovery.Detect
import Network.QUIC.Recovery.Metrics
import Network.QUIC.Recovery.Misc
import Network.QUIC.Recovery.PeerPacketNumbers
import Network.QUIC.Recovery.Release
import Network.QUIC.Recovery.Timer
import Network.QUIC.Recovery.Types
import Network.QUIC.Recovery.Utils
import Network.QUIC.Types
onPacketSent :: LDCC -> SentPacket -> IO ()
onPacketSent :: LDCC -> SentPacket -> IO ()
onPacketSent ldcc :: LDCC
ldcc@LDCC{Array EncryptionLevel (IORef Bool)
Array EncryptionLevel (IORef PeerPacketNumbers)
Array EncryptionLevel (IORef LossDetection)
Array EncryptionLevel (IORef SentPackets)
TVar (Maybe EncryptionLevel)
TVar TimerInfoQ
TVar CC
TVar SentPackets
IORef Bool
IORef Int
IORef (Maybe TimeoutKey)
IORef (Maybe TimerInfo)
IORef PeerPacketNumbers
IORef RTT
ConnState
PlainPacket -> IO ()
QLogger
timerInfoQ :: LDCC -> TVar TimerInfoQ
previousRTT1PPNs :: LDCC -> IORef PeerPacketNumbers
peerPacketNumbers :: LDCC -> Array EncryptionLevel (IORef PeerPacketNumbers)
pktNumPersistent :: LDCC -> IORef Int
speedingUp :: LDCC -> IORef Bool
ptoPing :: LDCC -> TVar (Maybe EncryptionLevel)
lostCandidates :: LDCC -> TVar SentPackets
timerInfo :: LDCC -> IORef (Maybe TimerInfo)
timerKey :: LDCC -> IORef (Maybe TimeoutKey)
lossDetection :: LDCC -> Array EncryptionLevel (IORef LossDetection)
sentPackets :: LDCC -> Array EncryptionLevel (IORef SentPackets)
spaceDiscarded :: LDCC -> Array EncryptionLevel (IORef Bool)
recoveryCC :: LDCC -> TVar CC
recoveryRTT :: LDCC -> IORef RTT
putRetrans :: LDCC -> PlainPacket -> IO ()
ldccQlogger :: LDCC -> QLogger
ldccState :: LDCC -> ConnState
timerInfoQ :: TVar TimerInfoQ
previousRTT1PPNs :: IORef PeerPacketNumbers
peerPacketNumbers :: Array EncryptionLevel (IORef PeerPacketNumbers)
pktNumPersistent :: IORef Int
speedingUp :: IORef Bool
ptoPing :: TVar (Maybe EncryptionLevel)
lostCandidates :: TVar SentPackets
timerInfo :: IORef (Maybe TimerInfo)
timerKey :: IORef (Maybe TimeoutKey)
lossDetection :: Array EncryptionLevel (IORef LossDetection)
sentPackets :: Array EncryptionLevel (IORef SentPackets)
spaceDiscarded :: Array EncryptionLevel (IORef Bool)
recoveryCC :: TVar CC
recoveryRTT :: IORef RTT
putRetrans :: PlainPacket -> IO ()
ldccQlogger :: QLogger
ldccState :: ConnState
..} SentPacket
sentPacket = do
let lvl0 :: EncryptionLevel
lvl0 = SentPacket -> EncryptionLevel
spEncryptionLevel SentPacket
sentPacket
let lvl :: EncryptionLevel
lvl
| EncryptionLevel
lvl0 forall a. Eq a => a -> a -> Bool
== EncryptionLevel
RTT0Level = EncryptionLevel
RTT1Level
| Bool
otherwise = EncryptionLevel
lvl0
Bool
discarded <- LDCC -> EncryptionLevel -> IO Bool
getPacketNumberSpaceDiscarded LDCC
ldcc EncryptionLevel
lvl
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless Bool
discarded forall a b. (a -> b) -> a -> b
$ do
LDCC -> SentPacket -> IO ()
onPacketSentCC LDCC
ldcc SentPacket
sentPacket
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
when (SentPacket -> Bool
spAckEliciting SentPacket
sentPacket) forall a b. (a -> b) -> a -> b
$
forall a. IORef a -> (a -> a) -> IO ()
atomicModifyIORef'' (Array EncryptionLevel (IORef LossDetection)
lossDetection forall i e. Ix i => Array i e -> i -> e
! EncryptionLevel
lvl) forall a b. (a -> b) -> a -> b
$ \LossDetection
ld ->
LossDetection
ld
{ timeOfLastAckElicitingPacket :: TimeMicrosecond
timeOfLastAckElicitingPacket = SentPacket -> TimeMicrosecond
spTimeSent SentPacket
sentPacket
}
forall a. IORef a -> (a -> a) -> IO ()
atomicModifyIORef'' (Array EncryptionLevel (IORef SentPackets)
sentPackets forall i e. Ix i => Array i e -> i -> e
! EncryptionLevel
lvl) forall a b. (a -> b) -> a -> b
$
\(SentPackets Seq SentPacket
db) -> Seq SentPacket -> SentPackets
SentPackets (Seq SentPacket
db forall a. Seq a -> a -> Seq a
|> SentPacket
sentPacket)
LDCC -> EncryptionLevel -> IO ()
setLossDetectionTimer LDCC
ldcc EncryptionLevel
lvl
onPacketSentCC :: LDCC -> SentPacket -> IO ()
onPacketSentCC :: LDCC -> SentPacket -> IO ()
onPacketSentCC ldcc :: LDCC
ldcc@LDCC{Array EncryptionLevel (IORef Bool)
Array EncryptionLevel (IORef PeerPacketNumbers)
Array EncryptionLevel (IORef LossDetection)
Array EncryptionLevel (IORef SentPackets)
TVar (Maybe EncryptionLevel)
TVar TimerInfoQ
TVar CC
TVar SentPackets
IORef Bool
IORef Int
IORef (Maybe TimeoutKey)
IORef (Maybe TimerInfo)
IORef PeerPacketNumbers
IORef RTT
ConnState
PlainPacket -> IO ()
QLogger
timerInfoQ :: TVar TimerInfoQ
previousRTT1PPNs :: IORef PeerPacketNumbers
peerPacketNumbers :: Array EncryptionLevel (IORef PeerPacketNumbers)
pktNumPersistent :: IORef Int
speedingUp :: IORef Bool
ptoPing :: TVar (Maybe EncryptionLevel)
lostCandidates :: TVar SentPackets
timerInfo :: IORef (Maybe TimerInfo)
timerKey :: IORef (Maybe TimeoutKey)
lossDetection :: Array EncryptionLevel (IORef LossDetection)
sentPackets :: Array EncryptionLevel (IORef SentPackets)
spaceDiscarded :: Array EncryptionLevel (IORef Bool)
recoveryCC :: TVar CC
recoveryRTT :: IORef RTT
putRetrans :: PlainPacket -> IO ()
ldccQlogger :: QLogger
ldccState :: ConnState
timerInfoQ :: LDCC -> TVar TimerInfoQ
previousRTT1PPNs :: LDCC -> IORef PeerPacketNumbers
peerPacketNumbers :: LDCC -> Array EncryptionLevel (IORef PeerPacketNumbers)
pktNumPersistent :: LDCC -> IORef Int
speedingUp :: LDCC -> IORef Bool
ptoPing :: LDCC -> TVar (Maybe EncryptionLevel)
lostCandidates :: LDCC -> TVar SentPackets
timerInfo :: LDCC -> IORef (Maybe TimerInfo)
timerKey :: LDCC -> IORef (Maybe TimeoutKey)
lossDetection :: LDCC -> Array EncryptionLevel (IORef LossDetection)
sentPackets :: LDCC -> Array EncryptionLevel (IORef SentPackets)
spaceDiscarded :: LDCC -> Array EncryptionLevel (IORef Bool)
recoveryCC :: LDCC -> TVar CC
recoveryRTT :: LDCC -> IORef RTT
putRetrans :: LDCC -> PlainPacket -> IO ()
ldccQlogger :: LDCC -> QLogger
ldccState :: LDCC -> ConnState
..} SentPacket
sentPacket = LDCC -> IO () -> IO ()
metricsUpdated LDCC
ldcc forall a b. (a -> b) -> a -> b
$
forall (m :: * -> *) a. MonadIO m => STM a -> m a
atomically forall a b. (a -> b) -> a -> b
$
forall a. TVar a -> (a -> a) -> STM ()
modifyTVar' TVar CC
recoveryCC forall a b. (a -> b) -> a -> b
$ \CC
cc ->
CC
cc
{ bytesInFlight :: Int
bytesInFlight = CC -> Int
bytesInFlight CC
cc forall a. Num a => a -> a -> a
+ Int
sentBytes
, numOfAckEliciting :: Int
numOfAckEliciting = CC -> Int
numOfAckEliciting CC
cc forall a. Num a => a -> a -> a
+ SentPacket -> Int
countAckEli SentPacket
sentPacket
}
where
sentBytes :: Int
sentBytes = SentPacket -> Int
spSentBytes SentPacket
sentPacket
onPacketReceived :: LDCC -> EncryptionLevel -> PacketNumber -> IO ()
onPacketReceived :: LDCC -> EncryptionLevel -> Int -> IO ()
onPacketReceived LDCC
ldcc EncryptionLevel
lvl Int
pn = do
Bool
discarded <- LDCC -> EncryptionLevel -> IO Bool
getPacketNumberSpaceDiscarded LDCC
ldcc EncryptionLevel
lvl
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless Bool
discarded forall a b. (a -> b) -> a -> b
$ LDCC -> EncryptionLevel -> Int -> IO ()
addPeerPacketNumbers LDCC
ldcc EncryptionLevel
lvl Int
pn
onAckReceived :: LDCC -> EncryptionLevel -> AckInfo -> Microseconds -> IO ()
onAckReceived :: LDCC -> EncryptionLevel -> AckInfo -> Microseconds -> IO ()
onAckReceived ldcc :: LDCC
ldcc@LDCC{Array EncryptionLevel (IORef Bool)
Array EncryptionLevel (IORef PeerPacketNumbers)
Array EncryptionLevel (IORef LossDetection)
Array EncryptionLevel (IORef SentPackets)
TVar (Maybe EncryptionLevel)
TVar TimerInfoQ
TVar CC
TVar SentPackets
IORef Bool
IORef Int
IORef (Maybe TimeoutKey)
IORef (Maybe TimerInfo)
IORef PeerPacketNumbers
IORef RTT
ConnState
PlainPacket -> IO ()
QLogger
timerInfoQ :: TVar TimerInfoQ
previousRTT1PPNs :: IORef PeerPacketNumbers
peerPacketNumbers :: Array EncryptionLevel (IORef PeerPacketNumbers)
pktNumPersistent :: IORef Int
speedingUp :: IORef Bool
ptoPing :: TVar (Maybe EncryptionLevel)
lostCandidates :: TVar SentPackets
timerInfo :: IORef (Maybe TimerInfo)
timerKey :: IORef (Maybe TimeoutKey)
lossDetection :: Array EncryptionLevel (IORef LossDetection)
sentPackets :: Array EncryptionLevel (IORef SentPackets)
spaceDiscarded :: Array EncryptionLevel (IORef Bool)
recoveryCC :: TVar CC
recoveryRTT :: IORef RTT
putRetrans :: PlainPacket -> IO ()
ldccQlogger :: QLogger
ldccState :: ConnState
timerInfoQ :: LDCC -> TVar TimerInfoQ
previousRTT1PPNs :: LDCC -> IORef PeerPacketNumbers
peerPacketNumbers :: LDCC -> Array EncryptionLevel (IORef PeerPacketNumbers)
pktNumPersistent :: LDCC -> IORef Int
speedingUp :: LDCC -> IORef Bool
ptoPing :: LDCC -> TVar (Maybe EncryptionLevel)
lostCandidates :: LDCC -> TVar SentPackets
timerInfo :: LDCC -> IORef (Maybe TimerInfo)
timerKey :: LDCC -> IORef (Maybe TimeoutKey)
lossDetection :: LDCC -> Array EncryptionLevel (IORef LossDetection)
sentPackets :: LDCC -> Array EncryptionLevel (IORef SentPackets)
spaceDiscarded :: LDCC -> Array EncryptionLevel (IORef Bool)
recoveryCC :: LDCC -> TVar CC
recoveryRTT :: LDCC -> IORef RTT
putRetrans :: LDCC -> PlainPacket -> IO ()
ldccQlogger :: LDCC -> QLogger
ldccState :: LDCC -> ConnState
..} EncryptionLevel
lvl ackInfo :: AckInfo
ackInfo@(AckInfo Int
largestAcked Int
_ [(Int, Int)]
_) Microseconds
ackDelay = do
Bool
changed <- forall a b. IORef a -> (a -> (a, b)) -> IO b
atomicModifyIORef' (Array EncryptionLevel (IORef LossDetection)
lossDetection forall i e. Ix i => Array i e -> i -> e
! EncryptionLevel
lvl) LossDetection -> (LossDetection, Bool)
update
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
when Bool
changed forall a b. (a -> b) -> a -> b
$ do
let predicate :: SentPacket -> Bool
predicate = AckInfo -> Int -> Bool
fromAckInfoToPred AckInfo
ackInfo forall b c a. (b -> c) -> (a -> b) -> a -> c
. SentPacket -> Int
spPacketNumber
LDCC
-> EncryptionLevel -> (SentPacket -> Bool) -> IO (Seq SentPacket)
releaseLostCandidates LDCC
ldcc EncryptionLevel
lvl SentPacket -> Bool
predicate forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= Seq SentPacket -> IO ()
updateCConAck
LDCC
-> EncryptionLevel -> (SentPacket -> Bool) -> IO (Seq SentPacket)
releaseByPredicate LDCC
ldcc EncryptionLevel
lvl SentPacket -> Bool
predicate forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= Seq SentPacket -> IO ()
detectLossUpdateCC
where
update :: LossDetection -> (LossDetection, Bool)
update ld :: LossDetection
ld@LossDetection{Int
Maybe TimeMicrosecond
TimeMicrosecond
AckInfo
lossTime :: LossDetection -> Maybe TimeMicrosecond
previousAckInfo :: LossDetection -> AckInfo
largestAckedPacket :: LossDetection -> Int
lossTime :: Maybe TimeMicrosecond
timeOfLastAckElicitingPacket :: TimeMicrosecond
previousAckInfo :: AckInfo
largestAckedPacket :: Int
timeOfLastAckElicitingPacket :: LossDetection -> TimeMicrosecond
..} = (LossDetection
ld', Bool
changed)
where
ld' :: LossDetection
ld' =
LossDetection
ld
{ largestAckedPacket :: Int
largestAckedPacket = forall a. Ord a => a -> a -> a
max Int
largestAckedPacket Int
largestAcked
, previousAckInfo :: AckInfo
previousAckInfo = AckInfo
ackInfo
}
changed :: Bool
changed = AckInfo
previousAckInfo forall a. Eq a => a -> a -> Bool
/= AckInfo
ackInfo
detectLossUpdateCC :: Seq SentPacket -> IO ()
detectLossUpdateCC Seq SentPacket
newlyAckedPackets = case forall a. Seq a -> ViewR a
Seq.viewr Seq SentPacket
newlyAckedPackets of
ViewR SentPacket
EmptyR -> forall (m :: * -> *) a. Monad m => a -> m a
return ()
Seq SentPacket
_ :> SentPacket
lastPkt -> do
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
when
( SentPacket -> Int
spPacketNumber SentPacket
lastPkt forall a. Eq a => a -> a -> Bool
== Int
largestAcked
Bool -> Bool -> Bool
&& forall (t :: * -> *) a. Foldable t => (a -> Bool) -> t a -> Bool
any SentPacket -> Bool
spAckEliciting Seq SentPacket
newlyAckedPackets
)
forall a b. (a -> b) -> a -> b
$ do
Microseconds
rtt <- TimeMicrosecond -> IO Microseconds
getElapsedTimeMicrosecond forall a b. (a -> b) -> a -> b
$ SentPacket -> TimeMicrosecond
spTimeSent SentPacket
lastPkt
let latestRtt :: Microseconds
latestRtt = forall a. Ord a => a -> a -> a
max Microseconds
rtt Microseconds
kGranularity
LDCC -> EncryptionLevel -> Microseconds -> Microseconds -> IO ()
updateRTT LDCC
ldcc EncryptionLevel
lvl Microseconds
latestRtt Microseconds
ackDelay
Seq SentPacket
lostPackets <- LDCC -> EncryptionLevel -> IO (Seq SentPacket)
detectAndRemoveLostPackets LDCC
ldcc EncryptionLevel
lvl
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
unless (forall (t :: * -> *) a. Foldable t => t a -> Bool
null Seq SentPacket
lostPackets) forall a b. (a -> b) -> a -> b
$ do
CCMode
mode <- CC -> CCMode
ccMode forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> forall (m :: * -> *) a. MonadIO m => TVar a -> m a
readTVarIO TVar CC
recoveryCC
if EncryptionLevel
lvl forall a. Eq a => a -> a -> Bool
== EncryptionLevel
RTT1Level Bool -> Bool -> Bool
&& CCMode
mode forall a. Eq a => a -> a -> Bool
/= CCMode
SlowStart
then LDCC -> Seq SentPacket -> IO ()
mergeLostCandidates LDCC
ldcc Seq SentPacket
lostPackets
else do
Seq SentPacket
lostPackets' <- LDCC -> Seq SentPacket -> IO (Seq SentPacket)
mergeLostCandidatesAndClear LDCC
ldcc Seq SentPacket
lostPackets
LDCC -> Seq SentPacket -> IO ()
onPacketsLost LDCC
ldcc Seq SentPacket
lostPackets'
LDCC -> Seq SentPacket -> IO ()
retransmit LDCC
ldcc Seq SentPacket
lostPackets'
Seq SentPacket -> IO ()
updateCConAck Seq SentPacket
newlyAckedPackets
updateCConAck :: Seq SentPacket -> IO ()
updateCConAck Seq SentPacket
newlyAckedPackets
| Seq SentPacket
newlyAckedPackets forall a. Eq a => a -> a -> Bool
== forall a. Seq a
Seq.empty = forall (m :: * -> *) a. Monad m => a -> m a
return ()
| Bool
otherwise = do
LDCC -> Seq SentPacket -> IO ()
onPacketsAcked LDCC
ldcc Seq SentPacket
newlyAckedPackets
Bool
validated <- LDCC -> IO Bool
peerCompletedAddressValidation LDCC
ldcc
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
when Bool
validated forall a b. (a -> b) -> a -> b
$
LDCC -> IO () -> IO ()
metricsUpdated LDCC
ldcc forall a b. (a -> b) -> a -> b
$
forall a. IORef a -> (a -> a) -> IO ()
atomicModifyIORef'' IORef RTT
recoveryRTT forall a b. (a -> b) -> a -> b
$
\RTT
rtt -> RTT
rtt{ptoCount :: Int
ptoCount = Int
0}
LDCC -> EncryptionLevel -> IO ()
setLossDetectionTimer LDCC
ldcc EncryptionLevel
lvl
releaseLostCandidates
:: LDCC -> EncryptionLevel -> (SentPacket -> Bool) -> IO (Seq SentPacket)
releaseLostCandidates :: LDCC
-> EncryptionLevel -> (SentPacket -> Bool) -> IO (Seq SentPacket)
releaseLostCandidates ldcc :: LDCC
ldcc@LDCC{Array EncryptionLevel (IORef Bool)
Array EncryptionLevel (IORef PeerPacketNumbers)
Array EncryptionLevel (IORef LossDetection)
Array EncryptionLevel (IORef SentPackets)
TVar (Maybe EncryptionLevel)
TVar TimerInfoQ
TVar CC
TVar SentPackets
IORef Bool
IORef Int
IORef (Maybe TimeoutKey)
IORef (Maybe TimerInfo)
IORef PeerPacketNumbers
IORef RTT
ConnState
PlainPacket -> IO ()
QLogger
timerInfoQ :: TVar TimerInfoQ
previousRTT1PPNs :: IORef PeerPacketNumbers
peerPacketNumbers :: Array EncryptionLevel (IORef PeerPacketNumbers)
pktNumPersistent :: IORef Int
speedingUp :: IORef Bool
ptoPing :: TVar (Maybe EncryptionLevel)
lostCandidates :: TVar SentPackets
timerInfo :: IORef (Maybe TimerInfo)
timerKey :: IORef (Maybe TimeoutKey)
lossDetection :: Array EncryptionLevel (IORef LossDetection)
sentPackets :: Array EncryptionLevel (IORef SentPackets)
spaceDiscarded :: Array EncryptionLevel (IORef Bool)
recoveryCC :: TVar CC
recoveryRTT :: IORef RTT
putRetrans :: PlainPacket -> IO ()
ldccQlogger :: QLogger
ldccState :: ConnState
timerInfoQ :: LDCC -> TVar TimerInfoQ
previousRTT1PPNs :: LDCC -> IORef PeerPacketNumbers
peerPacketNumbers :: LDCC -> Array EncryptionLevel (IORef PeerPacketNumbers)
pktNumPersistent :: LDCC -> IORef Int
speedingUp :: LDCC -> IORef Bool
ptoPing :: LDCC -> TVar (Maybe EncryptionLevel)
lostCandidates :: LDCC -> TVar SentPackets
timerInfo :: LDCC -> IORef (Maybe TimerInfo)
timerKey :: LDCC -> IORef (Maybe TimeoutKey)
lossDetection :: LDCC -> Array EncryptionLevel (IORef LossDetection)
sentPackets :: LDCC -> Array EncryptionLevel (IORef SentPackets)
spaceDiscarded :: LDCC -> Array EncryptionLevel (IORef Bool)
recoveryCC :: LDCC -> TVar CC
recoveryRTT :: LDCC -> IORef RTT
putRetrans :: LDCC -> PlainPacket -> IO ()
ldccQlogger :: LDCC -> QLogger
ldccState :: LDCC -> ConnState
..} EncryptionLevel
lvl SentPacket -> Bool
predicate = do
Seq SentPacket
packets <- forall (m :: * -> *) a. MonadIO m => STM a -> m a
atomically forall a b. (a -> b) -> a -> b
$ do
SentPackets Seq SentPacket
db <- forall a. TVar a -> STM a
readTVar TVar SentPackets
lostCandidates
let (Seq SentPacket
pkts, Seq SentPacket
db') = forall a. (a -> Bool) -> Seq a -> (Seq a, Seq a)
Seq.partition SentPacket -> Bool
predicate Seq SentPacket
db
forall a. TVar a -> a -> STM ()
writeTVar TVar SentPackets
lostCandidates forall a b. (a -> b) -> a -> b
$ Seq SentPacket -> SentPackets
SentPackets Seq SentPacket
db'
forall (m :: * -> *) a. Monad m => a -> m a
return Seq SentPacket
pkts
forall (t :: * -> *).
Foldable t =>
LDCC -> EncryptionLevel -> t SentPacket -> IO ()
removePacketNumbers LDCC
ldcc EncryptionLevel
lvl Seq SentPacket
packets
forall (m :: * -> *) a. Monad m => a -> m a
return Seq SentPacket
packets
onPacketsAcked :: LDCC -> Seq SentPacket -> IO ()
onPacketsAcked :: LDCC -> Seq SentPacket -> IO ()
onPacketsAcked ldcc :: LDCC
ldcc@LDCC{Array EncryptionLevel (IORef Bool)
Array EncryptionLevel (IORef PeerPacketNumbers)
Array EncryptionLevel (IORef LossDetection)
Array EncryptionLevel (IORef SentPackets)
TVar (Maybe EncryptionLevel)
TVar TimerInfoQ
TVar CC
TVar SentPackets
IORef Bool
IORef Int
IORef (Maybe TimeoutKey)
IORef (Maybe TimerInfo)
IORef PeerPacketNumbers
IORef RTT
ConnState
PlainPacket -> IO ()
QLogger
timerInfoQ :: TVar TimerInfoQ
previousRTT1PPNs :: IORef PeerPacketNumbers
peerPacketNumbers :: Array EncryptionLevel (IORef PeerPacketNumbers)
pktNumPersistent :: IORef Int
speedingUp :: IORef Bool
ptoPing :: TVar (Maybe EncryptionLevel)
lostCandidates :: TVar SentPackets
timerInfo :: IORef (Maybe TimerInfo)
timerKey :: IORef (Maybe TimeoutKey)
lossDetection :: Array EncryptionLevel (IORef LossDetection)
sentPackets :: Array EncryptionLevel (IORef SentPackets)
spaceDiscarded :: Array EncryptionLevel (IORef Bool)
recoveryCC :: TVar CC
recoveryRTT :: IORef RTT
putRetrans :: PlainPacket -> IO ()
ldccQlogger :: QLogger
ldccState :: ConnState
timerInfoQ :: LDCC -> TVar TimerInfoQ
previousRTT1PPNs :: LDCC -> IORef PeerPacketNumbers
peerPacketNumbers :: LDCC -> Array EncryptionLevel (IORef PeerPacketNumbers)
pktNumPersistent :: LDCC -> IORef Int
speedingUp :: LDCC -> IORef Bool
ptoPing :: LDCC -> TVar (Maybe EncryptionLevel)
lostCandidates :: LDCC -> TVar SentPackets
timerInfo :: LDCC -> IORef (Maybe TimerInfo)
timerKey :: LDCC -> IORef (Maybe TimeoutKey)
lossDetection :: LDCC -> Array EncryptionLevel (IORef LossDetection)
sentPackets :: LDCC -> Array EncryptionLevel (IORef SentPackets)
spaceDiscarded :: LDCC -> Array EncryptionLevel (IORef Bool)
recoveryCC :: LDCC -> TVar CC
recoveryRTT :: LDCC -> IORef RTT
putRetrans :: LDCC -> PlainPacket -> IO ()
ldccQlogger :: LDCC -> QLogger
ldccState :: LDCC -> ConnState
..} Seq SentPacket
ackedPackets = LDCC -> IO () -> IO ()
metricsUpdated LDCC
ldcc forall a b. (a -> b) -> a -> b
$ do
Int
maxPktSiz <- forall a. Connector a => a -> IO Int
getMaxPacketSize LDCC
ldcc
CC
oldcc <- forall (m :: * -> *) a. MonadIO m => TVar a -> m a
readTVarIO TVar CC
recoveryCC
forall (m :: * -> *) a. MonadIO m => STM a -> m a
atomically forall a b. (a -> b) -> a -> b
$ forall a. TVar a -> (a -> a) -> STM ()
modifyTVar' TVar CC
recoveryCC forall a b. (a -> b) -> a -> b
$ Int -> CC -> CC
modify Int
maxPktSiz
CC
newcc <- forall (m :: * -> *) a. MonadIO m => TVar a -> m a
readTVarIO TVar CC
recoveryCC
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
when (CC -> CCMode
ccMode CC
oldcc forall a. Eq a => a -> a -> Bool
/= CC -> CCMode
ccMode CC
newcc) forall a b. (a -> b) -> a -> b
$
forall q. KeepQlog q => q -> CCMode -> IO ()
qlogContestionStateUpdated LDCC
ldcc forall a b. (a -> b) -> a -> b
$
CC -> CCMode
ccMode CC
newcc
where
modify :: Int -> CC -> CC
modify Int
maxPktSiz cc :: CC
cc@CC{Int
Maybe TimeMicrosecond
CCMode
bytesAcked :: CC -> Int
ssthresh :: CC -> Int
congestionRecoveryStartTime :: CC -> Maybe TimeMicrosecond
congestionWindow :: CC -> Int
ccMode :: CCMode
numOfAckEliciting :: Int
bytesAcked :: Int
ssthresh :: Int
congestionRecoveryStartTime :: Maybe TimeMicrosecond
congestionWindow :: Int
bytesInFlight :: Int
ccMode :: CC -> CCMode
numOfAckEliciting :: CC -> Int
bytesInFlight :: CC -> Int
..} =
CC
cc
{ bytesInFlight :: Int
bytesInFlight = Int
bytesInFlight'
, congestionWindow :: Int
congestionWindow = Int
congestionWindow'
, bytesAcked :: Int
bytesAcked = Int
bytesAcked'
, ccMode :: CCMode
ccMode = CCMode
ccMode'
, numOfAckEliciting :: Int
numOfAckEliciting = Int
numOfAckEliciting'
}
where
(Int
bytesInFlight', Int
congestionWindow', Int
bytesAcked', CCMode
ccMode', Int
numOfAckEliciting') =
forall (t :: * -> *) b a.
Foldable t =>
(b -> a -> b) -> b -> t a -> b
foldl'
forall {d}.
(Int, Int, Int, d, Int)
-> SentPacket -> (Int, Int, Int, CCMode, Int)
(.+)
(Int
bytesInFlight, Int
congestionWindow, Int
bytesAcked, CCMode
ccMode, Int
numOfAckEliciting)
Seq SentPacket
ackedPackets
(Int
bytes, Int
cwin, Int
acked, d
_, Int
cnt) .+ :: (Int, Int, Int, d, Int)
-> SentPacket -> (Int, Int, Int, CCMode, Int)
.+ sp :: SentPacket
sp@SentPacket{Bool
Int
TimeMicrosecond
PeerPacketNumbers
EncryptionLevel
PlainPacket
spPeerPacketNumbers :: SentPacket -> PeerPacketNumbers
spPlainPacket :: SentPacket -> PlainPacket
spAckEliciting :: Bool
spPeerPacketNumbers :: PeerPacketNumbers
spPacketNumber :: Int
spEncryptionLevel :: EncryptionLevel
spSentBytes :: Int
spTimeSent :: TimeMicrosecond
spPlainPacket :: PlainPacket
spPacketNumber :: SentPacket -> Int
spSentBytes :: SentPacket -> Int
spTimeSent :: SentPacket -> TimeMicrosecond
spAckEliciting :: SentPacket -> Bool
spEncryptionLevel :: SentPacket -> EncryptionLevel
..} = (Int
bytes', Int
cwin', Int
acked', CCMode
mode', Int
cnt')
where
isRecovery :: Bool
isRecovery = TimeMicrosecond -> Maybe TimeMicrosecond -> Bool
inCongestionRecovery TimeMicrosecond
spTimeSent Maybe TimeMicrosecond
congestionRecoveryStartTime
bytes' :: Int
bytes' = Int
bytes forall a. Num a => a -> a -> a
- Int
spSentBytes
ackedA :: Int
ackedA = Int
acked forall a. Num a => a -> a -> a
+ Int
spSentBytes
cnt' :: Int
cnt' = Int
cnt forall a. Num a => a -> a -> a
- SentPacket -> Int
countAckEli SentPacket
sp
(Int
cwin', Int
acked', CCMode
mode')
| Bool
isRecovery = (Int
cwin, Int
acked, CCMode
Recovery)
| Int
cwin forall a. Ord a => a -> a -> Bool
< Int
ssthresh = (Int
cwin forall a. Num a => a -> a -> a
+ Int
spSentBytes, Int
acked, CCMode
SlowStart)
| Int
ackedA forall a. Ord a => a -> a -> Bool
>= Int
cwin = (Int
cwin forall a. Num a => a -> a -> a
+ Int
maxPktSiz, Int
ackedA forall a. Num a => a -> a -> a
- Int
cwin, CCMode
Avoidance)
| Bool
otherwise = (Int
cwin, Int
ackedA, CCMode
Avoidance)
onPacketNumberSpaceDiscarded :: LDCC -> EncryptionLevel -> IO ()
onPacketNumberSpaceDiscarded :: LDCC -> EncryptionLevel -> IO ()
onPacketNumberSpaceDiscarded LDCC
ldcc EncryptionLevel
lvl = do
let (EncryptionLevel
lvl', LogStr
label) = case EncryptionLevel
lvl of
EncryptionLevel
InitialLevel -> (EncryptionLevel
HandshakeLevel, LogStr
"initial")
EncryptionLevel
_ -> (EncryptionLevel
RTT1Level, LogStr
"handshake")
forall q. KeepQlog q => q -> Debug -> IO ()
qlogDebug LDCC
ldcc forall a b. (a -> b) -> a -> b
$ LogStr -> Debug
Debug (LogStr
label forall a. Semigroup a => a -> a -> a
<> LogStr
" discarded")
forall (f :: * -> *) a. Functor f => f a -> f ()
void forall a b. (a -> b) -> a -> b
$ LDCC -> EncryptionLevel -> IO (Seq SentPacket)
discard LDCC
ldcc EncryptionLevel
lvl
LDCC -> EncryptionLevel -> IO ()
setLossDetectionTimer LDCC
ldcc EncryptionLevel
lvl'