{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE TypeFamilies #-}
module Haskoin.Node.Peer
( PeerConfig(..)
, Conduits(..)
, PeerException(..)
, WithConnection
, Peer
, peer
, wrapPeer
, peerPublisher
, peerText
, sendMessage
, killPeer
, getBlocks
, getTxs
, getData
, pingPeer
, getBusy
, setBusy
, setFree
) where
import Conduit (ConduitT, Void, awaitForever, foldC,
mapM_C, runConduit, takeCE,
transPipe, yield, (.|))
import Control.Monad (forever, join, when)
import Control.Monad.Logger (MonadLoggerIO, logErrorS)
import Control.Monad.Trans.Maybe (MaybeT (MaybeT), runMaybeT)
import Data.ByteString (ByteString)
import qualified Data.ByteString as B
import Data.Function (on)
import Data.List (union)
import Data.Maybe (isJust)
import Data.Serialize (decode, runGet, runPut)
import Data.String.Conversions (cs)
import Data.Text (Text)
import Data.Word (Word32)
import Haskoin (Block (..), BlockHash (..),
GetData (..), InvType (..),
InvVector (..), Message (..),
MessageCommand (..),
MessageHeader (..), Network (..),
NotFound (..), Ping (..), Pong (..),
Tx, TxHash (..), commandToString,
encodeHex, getMessage, headerHash,
putMessage, txHash)
import NQE (Inbox, Mailbox, Publisher,
inboxToMailbox, publish, receive,
receiveMatchS, send,
withSubscription)
import System.Random (randomIO)
import UnliftIO (Exception, MonadIO, MonadUnliftIO,
TVar, atomically, liftIO, link,
readTVar, readTVarIO, throwIO,
timeout, withAsync, withRunInIO,
writeTVar)
data Conduits =
Conduits
{ Conduits -> ConduitT () ByteString IO ()
inboundConduit :: ConduitT () ByteString IO ()
, Conduits -> ConduitT ByteString Void IO ()
outboundConduit :: ConduitT ByteString Void IO ()
}
type WithConnection = (Conduits -> IO ()) -> IO ()
data PeerConfig = PeerConfig
{ PeerConfig -> Publisher (Peer, Message)
peerConfPub :: !(Publisher (Peer, Message))
, PeerConfig -> Network
peerConfNetwork :: !Network
, PeerConfig -> Text
peerConfText :: !Text
, PeerConfig -> WithConnection
peerConfConnect :: !WithConnection
}
data PeerException
= PeerMisbehaving !String
| DuplicateVersion
|
| CannotDecodePayload !MessageCommand
| PeerIsMyself
| PayloadTooLarge !Word32
| PeerAddressInvalid
|
| NotNetworkPeer
| PeerNoSegWit
| PeerTimeout
| UnknownPeer
| PeerTooOld
|
deriving PeerException -> PeerException -> Bool
forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
/= :: PeerException -> PeerException -> Bool
$c/= :: PeerException -> PeerException -> Bool
== :: PeerException -> PeerException -> Bool
$c== :: PeerException -> PeerException -> Bool
Eq
instance Show PeerException where
show :: PeerException -> String
show (PeerMisbehaving String
s) = String
"Peer misbehaving: " forall a. Semigroup a => a -> a -> a
<> String
s
show PeerException
DuplicateVersion = String
"Duplicate version"
show PeerException
DecodeHeaderError = String
"Error decoding header"
show (CannotDecodePayload MessageCommand
c) = String
"Cannot decode payload: " forall a. Semigroup a => a -> a -> a
<>
forall a b. ConvertibleStrings a b => a -> b
cs (MessageCommand -> ByteString
commandToString MessageCommand
c)
show PeerException
PeerIsMyself = String
"Peer is myself"
show (PayloadTooLarge Word32
s) = String
"Payload too large: " forall a. Semigroup a => a -> a -> a
<> forall a. Show a => a -> String
show Word32
s
show PeerException
PeerAddressInvalid = String
"Peer address invalid"
show PeerException
PeerSentBadHeaders = String
"Peer sent bad headers"
show PeerException
NotNetworkPeer = String
"Not network peer"
show PeerException
PeerNoSegWit = String
"Segwit not supported by peer"
show PeerException
PeerTimeout = String
"Peer timed out"
show PeerException
UnknownPeer = String
"Unknown peer"
show PeerException
PeerTooOld = String
"Peer too old"
show PeerException
EmptyHeader = String
"Empty header"
instance Exception PeerException
data Peer = Peer { Peer -> Mailbox PeerMessage
peerMailbox :: !(Mailbox PeerMessage)
, Peer -> Publisher (Peer, Message)
peerPublisher :: !(Publisher (Peer, Message))
, Peer -> Text
peerText :: !Text
, Peer -> TVar Bool
peerBusy :: !(TVar Bool)
}
instance Eq Peer where
== :: Peer -> Peer -> Bool
(==) = forall a. Eq a => a -> a -> Bool
(==) forall b c a. (b -> b -> c) -> (a -> b) -> a -> a -> c
`on` Peer -> Mailbox PeerMessage
peerMailbox
instance Show Peer where
show :: Peer -> String
show = forall a b. ConvertibleStrings a b => a -> b
cs forall b c a. (b -> c) -> (a -> b) -> a -> c
. Peer -> Text
peerText
data PeerMessage
= KillPeer !PeerException
| SendMessage !Message
wrapPeer :: MonadIO m
=> PeerConfig
-> TVar Bool
-> Mailbox PeerMessage
-> m Peer
wrapPeer :: forall (m :: * -> *).
MonadIO m =>
PeerConfig -> TVar Bool -> Mailbox PeerMessage -> m Peer
wrapPeer PeerConfig
cfg TVar Bool
busy Mailbox PeerMessage
mbox =
forall (m :: * -> *) a. Monad m => a -> m a
return Peer { peerMailbox :: Mailbox PeerMessage
peerMailbox = Mailbox PeerMessage
mbox
, peerPublisher :: Publisher (Peer, Message)
peerPublisher = PeerConfig -> Publisher (Peer, Message)
peerConfPub PeerConfig
cfg
, peerText :: Text
peerText = PeerConfig -> Text
peerConfText PeerConfig
cfg
, peerBusy :: TVar Bool
peerBusy = TVar Bool
busy
}
peer :: (MonadUnliftIO m, MonadLoggerIO m)
=> PeerConfig
-> TVar Bool
-> Inbox PeerMessage
-> m ()
peer :: forall (m :: * -> *).
(MonadUnliftIO m, MonadLoggerIO m) =>
PeerConfig -> TVar Bool -> Inbox PeerMessage -> m ()
peer cfg :: PeerConfig
cfg@PeerConfig{Text
Network
Publisher (Peer, Message)
WithConnection
peerConfConnect :: WithConnection
peerConfText :: Text
peerConfNetwork :: Network
peerConfPub :: Publisher (Peer, Message)
peerConfConnect :: PeerConfig -> WithConnection
peerConfText :: PeerConfig -> Text
peerConfNetwork :: PeerConfig -> Network
peerConfPub :: PeerConfig -> Publisher (Peer, Message)
..} TVar Bool
busy Inbox PeerMessage
inbox = do
Peer
p <- forall (m :: * -> *).
MonadIO m =>
PeerConfig -> TVar Bool -> Mailbox PeerMessage -> m Peer
wrapPeer PeerConfig
cfg TVar Bool
busy (forall msg. Inbox msg -> Mailbox msg
inboxToMailbox Inbox PeerMessage
inbox)
forall (m :: * -> *) b.
MonadUnliftIO m =>
((forall a. m a -> IO a) -> IO b) -> m b
withRunInIO forall a b. (a -> b) -> a -> b
$ \forall a. m a -> IO a
restore -> do
WithConnection
peerConfConnect (Peer -> Conduits -> IO ()
peer_session Peer
p)
where
go :: ConduitT () Message IO ()
go = forall (f :: * -> *) a b. Applicative f => f a -> f b
forever forall a b. (a -> b) -> a -> b
$ forall (mbox :: * -> *) (m :: * -> *) msg.
(InChan mbox, MonadIO m) =>
mbox msg -> m msg
receive Inbox PeerMessage
inbox forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= forall (m :: * -> *) i.
MonadIO m =>
PeerConfig -> PeerMessage -> ConduitT i Message m ()
dispatchMessage PeerConfig
cfg
peer_session :: Peer -> Conduits -> IO ()
peer_session Peer
p Conduits
ad = do
let ins :: ConduitT () ByteString IO ()
ins = forall (m :: * -> *) (n :: * -> *) i o r.
Monad m =>
(forall a. m a -> n a) -> ConduitT i o m r -> ConduitT i o n r
transPipe forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (Conduits -> ConduitT () ByteString IO ()
inboundConduit Conduits
ad)
ons :: ConduitT ByteString Void IO ()
ons = forall (m :: * -> *) (n :: * -> *) i o r.
Monad m =>
(forall a. m a -> n a) -> ConduitT i o m r -> ConduitT i o n r
transPipe forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO (Conduits -> ConduitT ByteString Void IO ()
outboundConduit Conduits
ad)
src :: IO ()
src = forall (m :: * -> *) r. Monad m => ConduitT () Void m r -> m r
runConduit forall a b. (a -> b) -> a -> b
$
ConduitT () ByteString IO ()
ins
forall (m :: * -> *) a b c r.
Monad m =>
ConduitT a b m () -> ConduitT b c m r -> ConduitT a c m r
.| forall (m :: * -> *).
MonadIO m =>
Network -> Text -> ConduitT ByteString Message m ()
inPeerConduit Network
peerConfNetwork Text
peerConfText
forall (m :: * -> *) a b c r.
Monad m =>
ConduitT a b m () -> ConduitT b c m r -> ConduitT a c m r
.| forall (m :: * -> *) a o.
Monad m =>
(a -> m ()) -> ConduitT a o m ()
mapM_C (Peer -> Message -> IO ()
send_msg Peer
p)
snk :: ConduitT Message Void IO ()
snk = forall (m :: * -> *).
Monad m =>
Network -> ConduitT Message ByteString m ()
outPeerConduit Network
peerConfNetwork forall (m :: * -> *) a b c r.
Monad m =>
ConduitT a b m () -> ConduitT b c m r -> ConduitT a c m r
.| ConduitT ByteString Void IO ()
ons
forall (m :: * -> *) a b.
MonadUnliftIO m =>
m a -> (Async a -> m b) -> m b
withAsync IO ()
src forall a b. (a -> b) -> a -> b
$ \Async ()
as -> do
forall (m :: * -> *) a. MonadIO m => Async a -> m ()
link Async ()
as
forall (m :: * -> *) r. Monad m => ConduitT () Void m r -> m r
runConduit (ConduitT () Message IO ()
go forall (m :: * -> *) a b c r.
Monad m =>
ConduitT a b m () -> ConduitT b c m r -> ConduitT a c m r
.| ConduitT Message Void IO ()
snk)
send_msg :: Peer -> Message -> IO ()
send_msg Peer
p Message
msg = forall (m :: * -> *) msg. MonadIO m => msg -> Publisher msg -> m ()
publish (Peer
p, Message
msg) Publisher (Peer, Message)
peerConfPub
dispatchMessage :: MonadIO m
=> PeerConfig
-> PeerMessage
-> ConduitT i Message m ()
dispatchMessage :: forall (m :: * -> *) i.
MonadIO m =>
PeerConfig -> PeerMessage -> ConduitT i Message m ()
dispatchMessage PeerConfig
_ (SendMessage Message
msg) = forall (m :: * -> *) o i. Monad m => o -> ConduitT i o m ()
yield Message
msg
dispatchMessage PeerConfig
_ (KillPeer PeerException
e) = forall (m :: * -> *) e a. (MonadIO m, Exception e) => e -> m a
throwIO PeerException
e
inPeerConduit :: MonadIO m
=> Network
-> Text
-> ConduitT ByteString Message m ()
inPeerConduit :: forall (m :: * -> *).
MonadIO m =>
Network -> Text -> ConduitT ByteString Message m ()
inPeerConduit Network
net Text
a =
forall (f :: * -> *) a b. Applicative f => f a -> f b
forever forall a b. (a -> b) -> a -> b
$ do
ByteString
x <- forall (m :: * -> *) seq.
(Monad m, IsSequence seq) =>
Index seq -> ConduitT seq seq m ()
takeCE Int
24 forall (m :: * -> *) a b c r.
Monad m =>
ConduitT a b m () -> ConduitT b c m r -> ConduitT a c m r
.| forall (m :: * -> *) a o. (Monad m, Monoid a) => ConduitT a o m a
foldC
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
when (ByteString -> Bool
B.null ByteString
x) forall a b. (a -> b) -> a -> b
$ do
forall (m :: * -> *) e a. (MonadIO m, Exception e) => e -> m a
throwIO PeerException
EmptyHeader
case forall a. Serialize a => ByteString -> Either String a
decode ByteString
x of
Left String
e -> do
forall (m :: * -> *) e a. (MonadIO m, Exception e) => e -> m a
throwIO PeerException
DecodeHeaderError
Right (MessageHeader Word32
_ MessageCommand
cmd Word32
len CheckSum32
_) -> do
forall (f :: * -> *). Applicative f => Bool -> f () -> f ()
when (Word32
len forall a. Ord a => a -> a -> Bool
> Word32
32 forall a. Num a => a -> a -> a
* Word32
2 forall a b. (Num a, Integral b) => a -> b -> a
^ (Int
20 :: Int)) forall a b. (a -> b) -> a -> b
$ do
forall (m :: * -> *) e a. (MonadIO m, Exception e) => e -> m a
throwIO forall a b. (a -> b) -> a -> b
$ Word32 -> PeerException
PayloadTooLarge Word32
len
ByteString
y <- forall (m :: * -> *) seq.
(Monad m, IsSequence seq) =>
Index seq -> ConduitT seq seq m ()
takeCE (forall a b. (Integral a, Num b) => a -> b
fromIntegral Word32
len) forall (m :: * -> *) a b c r.
Monad m =>
ConduitT a b m () -> ConduitT b c m r -> ConduitT a c m r
.| forall (m :: * -> *) a o. (Monad m, Monoid a) => ConduitT a o m a
foldC
case forall a. Get a -> ByteString -> Either String a
runGet (forall (m :: * -> *). MonadGet m => Network -> m Message
getMessage Network
net) forall a b. (a -> b) -> a -> b
$ ByteString
x ByteString -> ByteString -> ByteString
`B.append` ByteString
y of
Left String
e -> do
forall (m :: * -> *) e a. (MonadIO m, Exception e) => e -> m a
throwIO (MessageCommand -> PeerException
CannotDecodePayload MessageCommand
cmd)
Right Message
msg -> forall (m :: * -> *) o i. Monad m => o -> ConduitT i o m ()
yield Message
msg
outPeerConduit :: Monad m => Network -> ConduitT Message ByteString m ()
outPeerConduit :: forall (m :: * -> *).
Monad m =>
Network -> ConduitT Message ByteString m ()
outPeerConduit Network
net = forall (m :: * -> *) i o r.
Monad m =>
(i -> ConduitT i o m r) -> ConduitT i o m ()
awaitForever forall a b. (a -> b) -> a -> b
$ forall (m :: * -> *) o i. Monad m => o -> ConduitT i o m ()
yield forall b c a. (b -> c) -> (a -> b) -> a -> c
. Put -> ByteString
runPut forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall (m :: * -> *). MonadPut m => Network -> Message -> m ()
putMessage Network
net
killPeer :: MonadIO m => PeerException -> Peer -> m ()
killPeer :: forall (m :: * -> *). MonadIO m => PeerException -> Peer -> m ()
killPeer PeerException
e Peer
p = PeerException -> PeerMessage
KillPeer PeerException
e forall (m :: * -> *) (mbox :: * -> *) msg.
(MonadIO m, OutChan mbox) =>
msg -> mbox msg -> m ()
`send` Peer -> Mailbox PeerMessage
peerMailbox Peer
p
sendMessage :: MonadIO m => Message -> Peer -> m ()
sendMessage :: forall (m :: * -> *). MonadIO m => Message -> Peer -> m ()
sendMessage Message
msg Peer
p = Message -> PeerMessage
SendMessage Message
msg forall (m :: * -> *) (mbox :: * -> *) msg.
(MonadIO m, OutChan mbox) =>
msg -> mbox msg -> m ()
`send` Peer -> Mailbox PeerMessage
peerMailbox Peer
p
getBusy :: MonadIO m => Peer -> m Bool
getBusy :: forall (m :: * -> *). MonadIO m => Peer -> m Bool
getBusy Peer
p = forall (m :: * -> *) a. MonadIO m => TVar a -> m a
readTVarIO (Peer -> TVar Bool
peerBusy Peer
p)
setBusy :: MonadIO m => Peer -> m Bool
setBusy :: forall (m :: * -> *). MonadIO m => Peer -> m Bool
setBusy Peer
p =
forall (m :: * -> *) a. MonadIO m => STM a -> m a
atomically forall a b. (a -> b) -> a -> b
$
forall a. TVar a -> STM a
readTVar (Peer -> TVar Bool
peerBusy Peer
p) forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \case
Bool
True -> forall (m :: * -> *) a. Monad m => a -> m a
return Bool
False
Bool
False -> forall a. TVar a -> a -> STM ()
writeTVar (Peer -> TVar Bool
peerBusy Peer
p) Bool
True forall (m :: * -> *) a b. Monad m => m a -> m b -> m b
>>
forall (m :: * -> *) a. Monad m => a -> m a
return Bool
True
setFree :: MonadIO m => Peer -> m ()
setFree :: forall (m :: * -> *). MonadIO m => Peer -> m ()
setFree Peer
p = forall (m :: * -> *) a. MonadIO m => STM a -> m a
atomically forall a b. (a -> b) -> a -> b
$ forall a. TVar a -> a -> STM ()
writeTVar (Peer -> TVar Bool
peerBusy Peer
p) Bool
False
getBlocks :: MonadUnliftIO m
=> Network
-> Int
-> Peer
-> [BlockHash]
-> m (Maybe [Block])
getBlocks :: forall (m :: * -> *).
MonadUnliftIO m =>
Network -> Int -> Peer -> [BlockHash] -> m (Maybe [Block])
getBlocks Network
net Int
time Peer
p [BlockHash]
bhs =
forall (m :: * -> *) a. MaybeT m a -> m (Maybe a)
runMaybeT forall a b. (a -> b) -> a -> b
$ forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
(a -> m b) -> t a -> m (t b)
mapM forall {m :: * -> *} {a} {a}. Monad m => Either a a -> MaybeT m a
f forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< forall (m :: * -> *) a. m (Maybe a) -> MaybeT m a
MaybeT (forall (m :: * -> *).
MonadUnliftIO m =>
Int -> Peer -> GetData -> m (Maybe [Either Tx Block])
getData Int
time Peer
p ([InvVector] -> GetData
GetData [InvVector]
ivs))
where
f :: Either a a -> MaybeT m a
f (Right a
b) = forall (m :: * -> *) a. Monad m => a -> m a
return a
b
f (Left a
_) = forall (m :: * -> *) a. m (Maybe a) -> MaybeT m a
MaybeT forall a b. (a -> b) -> a -> b
$ forall (m :: * -> *) a. Monad m => a -> m a
return forall a. Maybe a
Nothing
c :: InvType
c
| Network -> Bool
getSegWit Network
net = InvType
InvWitnessBlock
| Bool
otherwise = InvType
InvBlock
ivs :: [InvVector]
ivs = forall a b. (a -> b) -> [a] -> [b]
map (InvType -> Hash256 -> InvVector
InvVector InvType
c forall b c a. (b -> c) -> (a -> b) -> a -> c
. BlockHash -> Hash256
getBlockHash) [BlockHash]
bhs
getTxs :: MonadUnliftIO m
=> Network
-> Int
-> Peer
-> [TxHash]
-> m (Maybe [Tx])
getTxs :: forall (m :: * -> *).
MonadUnliftIO m =>
Network -> Int -> Peer -> [TxHash] -> m (Maybe [Tx])
getTxs Network
net Int
time Peer
p [TxHash]
ths =
forall (m :: * -> *) a. MaybeT m a -> m (Maybe a)
runMaybeT forall a b. (a -> b) -> a -> b
$ forall (t :: * -> *) (m :: * -> *) a b.
(Traversable t, Monad m) =>
(a -> m b) -> t a -> m (t b)
mapM forall {m :: * -> *} {a} {b}. Monad m => Either a b -> MaybeT m a
f forall (m :: * -> *) a b. Monad m => (a -> m b) -> m a -> m b
=<< forall (m :: * -> *) a. m (Maybe a) -> MaybeT m a
MaybeT (forall (m :: * -> *).
MonadUnliftIO m =>
Int -> Peer -> GetData -> m (Maybe [Either Tx Block])
getData Int
time Peer
p ([InvVector] -> GetData
GetData [InvVector]
ivs))
where
f :: Either a b -> MaybeT m a
f (Right b
_) = forall (m :: * -> *) a. m (Maybe a) -> MaybeT m a
MaybeT forall a b. (a -> b) -> a -> b
$ forall (m :: * -> *) a. Monad m => a -> m a
return forall a. Maybe a
Nothing
f (Left a
t) = forall (m :: * -> *) a. Monad m => a -> m a
return a
t
c :: InvType
c
| Network -> Bool
getSegWit Network
net = InvType
InvWitnessTx
| Bool
otherwise = InvType
InvTx
ivs :: [InvVector]
ivs = forall a b. (a -> b) -> [a] -> [b]
map (InvType -> Hash256 -> InvVector
InvVector InvType
c forall b c a. (b -> c) -> (a -> b) -> a -> c
. TxHash -> Hash256
getTxHash) [TxHash]
ths
getData :: MonadUnliftIO m
=> Int
-> Peer
-> GetData
-> m (Maybe [Either Tx Block])
getData :: forall (m :: * -> *).
MonadUnliftIO m =>
Int -> Peer -> GetData -> m (Maybe [Either Tx Block])
getData Int
seconds Peer
p gd :: GetData
gd@(GetData [InvVector]
ivs) =
forall (m :: * -> *) msg a.
MonadUnliftIO m =>
Publisher msg -> (Inbox msg -> m a) -> m a
withSubscription (Peer -> Publisher (Peer, Message)
peerPublisher Peer
p) forall a b. (a -> b) -> a -> b
$ \Inbox (Peer, Message)
inb -> do
GetData -> Message
MGetData GetData
gd forall (m :: * -> *). MonadIO m => Message -> Peer -> m ()
`sendMessage` Peer
p
Word64
r <- forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO forall a (m :: * -> *). (Random a, MonadIO m) => m a
randomIO
Ping -> Message
MPing (Word64 -> Ping
Ping Word64
r) forall (m :: * -> *). MonadIO m => Message -> Peer -> m ()
`sendMessage` Peer
p
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap forall (m :: * -> *) a. Monad m => m (m a) -> m a
join forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall (m :: * -> *) a.
MonadUnliftIO m =>
Int -> m a -> m (Maybe a)
timeout (Int
seconds forall a. Num a => a -> a -> a
* Int
1000 forall a. Num a => a -> a -> a
* Int
1000) forall b c a. (b -> c) -> (a -> b) -> a -> c
.
forall (m :: * -> *) a. MaybeT m a -> m (Maybe a)
runMaybeT forall a b. (a -> b) -> a -> b
$ Inbox (Peer, Message)
-> Word64
-> [Either Tx Block]
-> [InvVector]
-> MaybeT m [Either Tx Block]
get_thing Inbox (Peer, Message)
inb Word64
r [] [InvVector]
ivs
where
get_thing :: Inbox (Peer, Message)
-> Word64
-> [Either Tx Block]
-> [InvVector]
-> MaybeT m [Either Tx Block]
get_thing Inbox (Peer, Message)
_inb Word64
_r [Either Tx Block]
acc [] =
forall (m :: * -> *) a. Monad m => a -> m a
return forall a b. (a -> b) -> a -> b
$ forall a. [a] -> [a]
reverse [Either Tx Block]
acc
get_thing Inbox (Peer, Message)
inb Word64
r [Either Tx Block]
acc hss :: [InvVector]
hss@(InvVector InvType
t Hash256
h : [InvVector]
hs) =
forall (m :: * -> *).
MonadIO m =>
Peer -> Inbox (Peer, Message) -> m Message
filterReceive Peer
p Inbox (Peer, Message)
inb forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \case
MTx Tx
tx
| InvType -> Bool
is_tx InvType
t Bool -> Bool -> Bool
&& TxHash -> Hash256
getTxHash (Tx -> TxHash
txHash Tx
tx) forall a. Eq a => a -> a -> Bool
== Hash256
h ->
Inbox (Peer, Message)
-> Word64
-> [Either Tx Block]
-> [InvVector]
-> MaybeT m [Either Tx Block]
get_thing Inbox (Peer, Message)
inb Word64
r (forall a b. a -> Either a b
Left Tx
tx forall a. a -> [a] -> [a]
: [Either Tx Block]
acc) [InvVector]
hs
MBlock b :: Block
b@(Block BlockHeader
bh [Tx]
_)
| InvType -> Bool
is_block InvType
t Bool -> Bool -> Bool
&& BlockHash -> Hash256
getBlockHash (BlockHeader -> BlockHash
headerHash BlockHeader
bh) forall a. Eq a => a -> a -> Bool
== Hash256
h ->
Inbox (Peer, Message)
-> Word64
-> [Either Tx Block]
-> [InvVector]
-> MaybeT m [Either Tx Block]
get_thing Inbox (Peer, Message)
inb Word64
r (forall a b. b -> Either a b
Right Block
b forall a. a -> [a] -> [a]
: [Either Tx Block]
acc) [InvVector]
hs
MNotFound (NotFound [InvVector]
nvs)
| Bool -> Bool
not (forall (t :: * -> *) a. Foldable t => t a -> Bool
null ([InvVector]
nvs forall a. Eq a => [a] -> [a] -> [a]
`union` [InvVector]
hs)) ->
forall (m :: * -> *) a. m (Maybe a) -> MaybeT m a
MaybeT forall a b. (a -> b) -> a -> b
$ forall (m :: * -> *) a. Monad m => a -> m a
return forall a. Maybe a
Nothing
MPong (Pong Word64
r')
| Word64
r forall a. Eq a => a -> a -> Bool
== Word64
r' ->
forall (m :: * -> *) a. m (Maybe a) -> MaybeT m a
MaybeT forall a b. (a -> b) -> a -> b
$ forall (m :: * -> *) a. Monad m => a -> m a
return forall a. Maybe a
Nothing
Message
_
| forall (t :: * -> *) a. Foldable t => t a -> Bool
null [Either Tx Block]
acc ->
Inbox (Peer, Message)
-> Word64
-> [Either Tx Block]
-> [InvVector]
-> MaybeT m [Either Tx Block]
get_thing Inbox (Peer, Message)
inb Word64
r [Either Tx Block]
acc [InvVector]
hss
| Bool
otherwise ->
forall (m :: * -> *) a. m (Maybe a) -> MaybeT m a
MaybeT forall a b. (a -> b) -> a -> b
$ forall (m :: * -> *) a. Monad m => a -> m a
return forall a. Maybe a
Nothing
is_tx :: InvType -> Bool
is_tx InvType
InvWitnessTx = Bool
True
is_tx InvType
InvTx = Bool
True
is_tx InvType
_ = Bool
False
is_block :: InvType -> Bool
is_block InvType
InvWitnessBlock = Bool
True
is_block InvType
InvBlock = Bool
True
is_block InvType
_ = Bool
False
pingPeer :: MonadUnliftIO m => Int -> Peer -> m Bool
pingPeer :: forall (m :: * -> *). MonadUnliftIO m => Int -> Peer -> m Bool
pingPeer Int
time Peer
p =
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
fmap forall a. Maybe a -> Bool
isJust forall b c a. (b -> c) -> (a -> b) -> a -> c
. forall (m :: * -> *) msg a.
MonadUnliftIO m =>
Publisher msg -> (Inbox msg -> m a) -> m a
withSubscription (Peer -> Publisher (Peer, Message)
peerPublisher Peer
p) forall a b. (a -> b) -> a -> b
$ \Inbox (Peer, Message)
sub -> do
Word64
r <- forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO forall a (m :: * -> *). (Random a, MonadIO m) => m a
randomIO
Ping -> Message
MPing (Word64 -> Ping
Ping Word64
r) forall (m :: * -> *). MonadIO m => Message -> Peer -> m ()
`sendMessage` Peer
p
forall (m :: * -> *) (mbox :: * -> *) msg a.
(MonadUnliftIO m, InChan mbox) =>
Int -> mbox msg -> (msg -> Maybe a) -> m (Maybe a)
receiveMatchS Int
time Inbox (Peer, Message)
sub forall a b. (a -> b) -> a -> b
$ \case
(Peer
p', MPong (Pong Word64
r'))
| Peer
p forall a. Eq a => a -> a -> Bool
== Peer
p' Bool -> Bool -> Bool
&& Word64
r forall a. Eq a => a -> a -> Bool
== Word64
r' -> forall a. a -> Maybe a
Just ()
(Peer, Message)
_ -> forall a. Maybe a
Nothing
peerLog :: Text -> Text
peerLog :: Text -> Text
peerLog = forall a. Monoid a => a -> a -> a
mappend Text
"Peer|"
filterReceive :: MonadIO m => Peer -> Inbox (Peer, Message) -> m Message
filterReceive :: forall (m :: * -> *).
MonadIO m =>
Peer -> Inbox (Peer, Message) -> m Message
filterReceive Peer
p Inbox (Peer, Message)
inb =
forall (mbox :: * -> *) (m :: * -> *) msg.
(InChan mbox, MonadIO m) =>
mbox msg -> m msg
receive Inbox (Peer, Message)
inb forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \case
(Peer
p', Message
msg) | Peer
p forall a. Eq a => a -> a -> Bool
== Peer
p' -> forall (m :: * -> *) a. Monad m => a -> m a
return Message
msg
(Peer, Message)
_ -> forall (m :: * -> *).
MonadIO m =>
Peer -> Inbox (Peer, Message) -> m Message
filterReceive Peer
p Inbox (Peer, Message)
inb