gameServer/ClientIO.hs
author unc0rr
Thu, 25 Feb 2010 18:28:33 +0000
changeset 2867 9be6693c78cb
parent 2352 7eaf82cf0890
child 2952 18fada739b55
permissions -rw-r--r--
- Unbreak support for client versions prior to 0.9.13-dev - Replace tabs with spaces (sorry for mixing with code changes)
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
2348
b39d826e1ccd Drop support for ghc 6.8, use 6.10 instead
unc0rr
parents: 2296
diff changeset
     1
{-# LANGUAGE ScopedTypeVariables #-}
1804
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
     2
module ClientIO where
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
     3
2296
19f2f76dc346 Patch for compiling with 6.10 (define NEW_EXCEPTIONS to do that)
unc0rr
parents: 2126
diff changeset
     4
import qualified Control.Exception as Exception
1804
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
     5
import Control.Concurrent.Chan
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
     6
import Control.Concurrent
1804
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
     7
import Control.Monad
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
     8
import System.IO
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
     9
----------------
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
    10
import CoreTypes
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
    11
2001
d909152bdc21 - More verbose output
unc0rr
parents: 1804
diff changeset
    12
listenLoop :: Handle -> Int -> [String] -> Chan CoreMessage -> Int -> IO ()
d909152bdc21 - More verbose output
unc0rr
parents: 1804
diff changeset
    13
listenLoop handle linesNumber buf chan clientID = do
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    14
    str <- hGetLine handle
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    15
    if (linesNumber > 50) || (length str > 450) then
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    16
        writeChan chan $ ClientMessage (clientID, ["QUIT", "Protocol violation"])
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    17
        else
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    18
        if str == "" then do
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    19
            writeChan chan $ ClientMessage (clientID, buf)
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    20
            yield
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    21
            listenLoop handle 0 [] chan clientID
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    22
            else
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    23
            listenLoop handle (linesNumber + 1) (buf ++ [str]) chan clientID
1804
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
    24
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
    25
clientRecvLoop :: Handle -> Chan CoreMessage -> Int -> IO ()
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
    26
clientRecvLoop handle chan clientID =
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    27
    listenLoop handle 0 [] chan clientID
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    28
        `catch` (\e -> clientOff (show e) >> return ())
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    29
    where clientOff msg = writeChan chan $ ClientMessage (clientID, ["QUIT", msg]) -- if the client disconnects, we perform as if it sent QUIT message
1804
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
    30
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
    31
clientSendLoop :: Handle -> Chan CoreMessage -> Chan [String] -> Int -> IO()
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
    32
clientSendLoop handle coreChan chan clientID = do
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    33
    answer <- readChan chan
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    34
    doClose <- Exception.handle
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    35
        (\(e :: Exception.IOException) -> if isQuit answer then return True else sendQuit e >> return False) $ do
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    36
        forM_ answer (hPutStrLn handle)
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    37
        hPutStrLn handle ""
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    38
        hFlush handle
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    39
        return $ isQuit answer
1804
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
    40
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    41
    if doClose then
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    42
        Exception.handle (\(_ :: Exception.IOException) -> putStrLn "error on hClose") $ hClose handle
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    43
        else
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    44
        clientSendLoop handle coreChan chan clientID
1804
4e78ad846fb6 New game server:
unc0rr
parents:
diff changeset
    45
2867
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    46
    where
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    47
        sendQuit e = writeChan coreChan $ ClientMessage (clientID, ["QUIT", show e])
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    48
        isQuit ("BYE":xs) = True
9be6693c78cb - Unbreak support for client versions prior to 0.9.13-dev
unc0rr
parents: 2352
diff changeset
    49
        isQuit _ = False