author | unc0rr |
Mon, 06 May 2019 21:20:56 +0200 | |
changeset 14894 | 9b292184d793 |
parent 13678 | 1aa5e884326a |
permissions | -rw-r--r-- |
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Gianfranco Costamagna <costamagnagianfranco@yahoo.it>
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{- |
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* Hedgewars, a free turn based strategy game |
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* Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com> |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; version 2 of the License |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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\-} |
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{-# LANGUAGE ScopedTypeVariables, OverloadedStrings, Rank2Types #-} |
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module ClientIO where |
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||
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import qualified Control.Exception as Exception |
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import Control.Monad.State |
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import Control.Concurrent.Chan |
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import Control.Concurrent |
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import Network |
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import Network.Socket.ByteString |
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import qualified Data.ByteString.Char8 as B |
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---------------- |
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import CoreTypes |
|
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import RoomsAndClients |
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pDelim :: B.ByteString |
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pDelim = "\n\n" |
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bs2Packets :: B.ByteString -> ([[B.ByteString]], B.ByteString) |
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bs2Packets = runState takePacks |
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takePacks :: State B.ByteString [[B.ByteString]] |
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takePacks |
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= do modify (until (not . B.isPrefixOf pDelim) (B.drop 2)) |
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packet <- state $ B.breakSubstring pDelim |
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buf <- get |
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if B.null buf then put packet >> return [] else |
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if B.null packet then return [] else |
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do packets <- takePacks |
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return (B.splitWith (== '\n') packet : packets) |
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Use sockets instead of handles, use bytestrings instead of strings
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listenLoop :: Socket -> Chan CoreMessage -> ClientIndex -> IO () |
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listenLoop sock chan ci = receiveWithBufferLoop B.empty |
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where |
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receiveWithBufferLoop recvBuf = do |
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recvBS <- recv sock 4096 |
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unless (B.null recvBS) $ do |
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let (packets, newrecvBuf) = bs2Packets $ B.append recvBuf recvBS |
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forM_ packets sendPacket |
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when (B.length newrecvBuf > 128 * 1024) $ sendPacket ["QUIT", "Protocol violation"] |
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Use Data.ByteString.copy on receive buffer to allow it free no longer used memory
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receiveWithBufferLoop $ B.copy newrecvBuf |
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sendPacket packet = writeChan chan $ ClientMessage (ci, packet) |
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clientRecvLoop :: Socket -> Chan CoreMessage -> Chan [B.ByteString] -> ClientIndex -> (forall a. IO a -> IO a) -> IO () |
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clientRecvLoop s chan clChan ci restore = |
|
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(myThreadId >>= |
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(\t -> (restore $ forkIO (clientSendLoop s t clChan ci) >> |
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listenLoop s chan ci >> return "Connection closed") |
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`Exception.catch` (\(e :: ShutdownThreadException) -> return . B.pack . show $ e) |
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`Exception.catch` (\(e :: Exception.IOException) -> return . B.pack . show $ e) |
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Catch all types of exceptions in recv thread. Should probably help with ghosts problem, though I have no idea which else kind of exception could arise there.
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`Exception.catch` (\(e :: Exception.SomeException) -> return . B.pack . show $ e) |
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) |
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>>= clientOff) `Exception.finally` remove |
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Another approach for fixing listener thread issues, should finally get rid of all problems. Not tested.
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where |
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Another approach for fixing listener thread issues, should finally get rid of all problems. Not tested.
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clientOff msg = writeChan chan $ ClientMessage (ci, ["QUIT", msg]) |
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remove = do |
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clientOff "Client is in some weird state" |
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writeChan chan $ Remove ci |
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This revision should, in theory, correctly merge 0.9.14 and tip, so that future merges of 0.9.14 should work properly
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clientSendLoop :: Socket -> ThreadId -> Chan [B.ByteString] -> ClientIndex -> IO () |
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clientSendLoop s tId chan ci = do |
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answer <- readChan chan |
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My best guess for issue #285 is send thread being stuck at sendAll function, so I move client removing function before sendAll
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|
23407ecb1826
My best guess for issue #285 is send thread being stuck at sendAll function, so I move client removing function before sendAll
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when (isQuit answer) $ |
23407ecb1826
My best guess for issue #285 is send thread being stuck at sendAll function, so I move client removing function before sendAll
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killReciever . B.unpack $ quitMessage answer |
23407ecb1826
My best guess for issue #285 is send thread being stuck at sendAll function, so I move client removing function before sendAll
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|
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Exception.handle |
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Catch all exceptions in clientSendLoop. If there could something besides IOException be thrown there, that would explain ping timeouts server issue.
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(\(e :: Exception.SomeException) -> unless (isQuit answer) . killReciever $ show e) $ |
5030
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Changed the standard show function to Text.Show.ByteString, and misc.
EJ <eivind.jahren@gmail.com>
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sendAll s $ B.unlines answer `B.snoc` '\n' |
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91 |
|
4932 | 92 |
if isQuit answer then |
7388
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Catch all exceptions in clientSendLoop. If there could something besides IOException be thrown there, that would explain ping timeouts server issue.
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sClose s |
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else |
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clientSendLoop s tId chan ci |
1804 | 96 |
|
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97 |
where |
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- Don't pretend client sent some message from sending thread (fixes crash when client is already deleted by recieveng thread)
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killReciever = Exception.throwTo tId . ShutdownThreadException |
13678
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Fix some string/translation inconsistencies in strings related to leaving
Wuzzy <Wuzzy2@mail.ru>
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99 |
-- intentionally not localized |
5001 | 100 |
quitMessage ["BYE"] = "bye" |
101 |
quitMessage ("BYE":msg:_) = msg |
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quitMessage _ = error "quitMessage" |
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isQuit ("BYE":_) = True |
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104 |
isQuit _ = False |