packSocketType,
packSockAddr, unpackSockAddr
+ , withSocketsDo -- :: IO a -> IO a
+
) where
import GlaExts
import ST
import Ix
-import Weak ( addForeignFinaliser )
+import Weak ( addForeignFinalizer )
import PrelIOBase -- IOError, Handle representation
import PrelHandle
import Foreign
+import Addr ( nullAddr )
import IO
import IOExts ( IORef, newIORef, readIORef, writeIORef )
import CString ( unpackNBytesBAIO,
- unpackCString, unpackCStringIO,
+ unpackCStringIO,
unpackCStringLenIO,
allocChars
)
signum n = mkPortNumber (signum (ntohs n))
data SockAddr -- C Names
-#ifndef cygwin32_TARGET_OS
+#if !defined(cygwin32_TARGET_OS) && !defined(mingw32_TARGET_OS)
= SockAddrUnix -- struct sockaddr_un
String -- sun_path
| SockAddrInet -- struct sockaddr_in
status <- _ccall_ createSocket (packFamily family)
(packSocketType stype)
protocol
- case status of
+ case (status::Int) of
-1 -> constructErrorAndFail "socket"
n -> do
socket_status <- newIORef NotConnected
-> SockAddr -- Address to Bind to
-> IO ()
-bindSocket (MkSocket s family stype protocol socketStatus) addr = do
-#ifndef cygwin32_TARGET_OS
- let isDomainSocket = if family == AF_UNIX then 1 else (0::Int)
+bindSocket (MkSocket s _family _stype _protocol socketStatus) addr = do
+#if !defined(cygwin32_TARGET_OS) && !defined(mingw32_TARGET_OS)
+ let isDomainSocket = if _family == AF_UNIX then 1 else (0::Int)
#else
let isDomainSocket = 0
#endif
currentStatus <- readIORef socketStatus
if currentStatus /= NotConnected
then
- fail (userError ("bindSocket: can't peform bind on socket in status " ++
+ ioError (userError ("bindSocket: can't peform bind on socket in status " ++
show currentStatus))
else do
addr' <- packSockAddr addr
- let (_,sz) = boundsOfByteArray addr'
- status <- _ccall_ bindSocket s addr' sz isDomainSocket
- case status of
+ let (_,sz) = boundsOfMutableByteArray addr'
+ status <- _ccall_ bindSocket s addr' sz (isDomainSocket::Int)
+ case (status::Int) of
-1 -> constructErrorAndFail "bindSocket"
- 0 -> writeIORef socketStatus (Bound)
+ _ -> writeIORef socketStatus (Bound)
\end{code}
Make a connection to an already opened socket on a given machine and port.
-assumes that we have already called createSocket, othewise it will fail.
+assumes that we have already called createSocket, otherwise it will fail.
This is the dual to $bindSocket$. The {\em server} process will
usually bind to a port number, the {\em client} will then connect to
-> SockAddr -- Socket address stuff
-> IO ()
-connect (MkSocket s family stype protocol socketStatus) addr = do
-#ifndef cygwin32_TARGET_OS
- let isDomainSocket = if family == AF_UNIX then 1 else (0::Int)
+connect (MkSocket s _family _stype _protocol socketStatus) addr = do
+#ifndef _WIN32
+ let isDomainSocket = if _family == AF_UNIX then 1 else (0::Int)
#else
let isDomainSocket = 0
#endif
currentStatus <- readIORef socketStatus
if currentStatus /= NotConnected
then
- fail (userError ("connect: can't peform connect on socket in status " ++
+ ioError (userError ("connect: can't peform connect on socket in status " ++
show currentStatus))
else do
addr' <- packSockAddr addr
- let (_,sz) = boundsOfByteArray addr'
- status <- _ccall_ connectSocket s addr' sz isDomainSocket
- case status of
+ let (_,sz) = boundsOfMutableByteArray addr'
+ status <- _ccall_ connectSocket s addr' sz (isDomainSocket::Int)
+ case (status::Int) of
-1 -> constructErrorAndFail "connect"
- 0 -> writeIORef socketStatus Connected
+ _ -> writeIORef socketStatus Connected
\end{code}
The programmer must call $listen$ to tell the system software
-> Int -- Queue Length
-> IO ()
-listen (MkSocket s family stype protocol socketStatus) backlog = do
+listen (MkSocket s _family _stype _protocol socketStatus) backlog = do
currentStatus <- readIORef socketStatus
if currentStatus /= Bound
then
- fail (userError ("listen: can't peform listen on socket in status " ++
+ ioError (userError ("listen: can't peform listen on socket in status " ++
show currentStatus))
else do
status <- _ccall_ listenSocket s backlog
- case status of
+ case (status::Int) of
-1 -> constructErrorAndFail "listen"
- 0 -> writeIORef socketStatus Listening
+ _ -> writeIORef socketStatus Listening
\end{code}
A call to $accept$ only returns when data is available on the given
okay <- sIsAcceptable sock
if not okay
then
- fail (userError ("accept: can't peform accept on socket in status " ++
+ ioError (userError ("accept: can't peform accept on socket in status " ++
show currentStatus))
else do
(ptr, sz) <- allocSockAddr family
- int_star <- stToIO (newIntArray (0,1))
+ int_star <- stToIO (newIntArray ((0::Int),1))
stToIO (writeIntArray int_star 0 sz)
- sock <- _ccall_ acceptSocket s ptr int_star
- case sock of
+ new_sock <- _ccall_ acceptSocket s ptr int_star
+ case (new_sock::Int) of
-1 -> constructErrorAndFail "accept"
_ -> do
- sz <- stToIO (readIntArray int_star 0)
- addr <- unpackSockAddr ptr sz
- status <- newIORef Connected
- return ((MkSocket sock family stype protocol status), addr)
+ a_sz <- stToIO (readIntArray int_star 0)
+ addr <- unpackSockAddr ptr a_sz
+ new_status <- newIORef Connected
+ return ((MkSocket new_sock family stype protocol new_status), addr)
\end{code}
%************************************************************************
-> String -- Data to send
-> IO Int -- Number of Bytes sent
-writeSocket (MkSocket s family stype protocol status) xs = do
+writeSocket (MkSocket s _family _stype _protocol status) xs = do
currentStatus <- readIORef status
if not ((currentStatus == Connected) || (currentStatus == Listening))
then
- fail (userError ("writeSocket: can't peform write on socket in status " ++
+ ioError (userError ("writeSocket: can't peform write on socket in status " ++
show currentStatus))
else do
nbytes <- _ccall_ writeDescriptor s xs (length xs)
- case nbytes of
+ case (nbytes::Int) of
-1 -> constructErrorAndFail "writeSocket"
_ -> return nbytes
-> SockAddr
-> IO Int -- Number of Bytes sent
-sendTo (MkSocket s family stype protocol status) xs addr = do
+sendTo (MkSocket s _family _stype _protocol status) xs addr = do
currentStatus <- readIORef status
if not ((currentStatus == Connected) || (currentStatus == Listening) || (currentStatus == Bound))
then
- fail (userError ("sendTo: can't peform write on socket in status " ++
+ ioError (userError ("sendTo: can't peform write on socket in status " ++
show currentStatus))
else do
addr' <- packSockAddr addr
- let (_,sz) = boundsOfByteArray addr'
+ let (_,sz) = boundsOfMutableByteArray addr'
nbytes <- _ccall_ sendTo__ s xs (length xs) addr' sz
- case nbytes of
+ case (nbytes::Int) of
-1 -> constructErrorAndFail "sendTo"
_ -> return nbytes
-> Int -- Number of Bytes to Read
-> IO (String, Int) -- (Data Read, Number of Bytes)
-readSocket (MkSocket s family stype protocol status) nbytes = do
+readSocket (MkSocket s _family _stype _protocol status) nbytes = do
currentStatus <- readIORef status
if not ((currentStatus == Connected) || (currentStatus == Listening))
then
- fail (userError ("readSocket: can't perform read on socket in status " ++
+ ioError (userError ("readSocket: can't perform read on socket in status " ++
show currentStatus))
else do
- ptr <- allocChars nbytes
- nbytes <- _ccall_ readDescriptor s ptr nbytes
- case nbytes of
+ ptr <- allocChars nbytes
+ rlen <- _ccall_ readDescriptor s ptr nbytes
+ case (rlen::Int) of
-1 -> constructErrorAndFail "readSocket"
n -> do
barr <- stToIO (unsafeFreezeByteArray ptr)
- s <- unpackNBytesBAIO barr n
- return (s,n)
+ str <- unpackNBytesBAIO barr n
+ return (str, n)
readSocketAll :: Socket -> IO String
readSocketAll s =
loop ""
recvFrom :: Socket -> Int -> IO (String, Int, SockAddr)
-recvFrom (MkSocket s family stype protocol status) nbytes = do
+recvFrom (MkSocket s _family _stype _protocol status) nbytes = do
currentStatus <- readIORef status
if not ((currentStatus == Connected) || (currentStatus == Listening) || (currentStatus == Bound))
then
- fail (userError ("recvFrom: can't perform read on socket in status " ++
+ ioError (userError ("recvFrom: can't perform read on socket in status " ++
show currentStatus))
else do
- ptr <- allocChars nbytes
+ ptr <- allocChars nbytes
(ptr_addr,_) <- allocSockAddr AF_INET
- nbytes <- _ccall_ recvFrom__ s ptr nbytes ptr_addr
- case nbytes of
+ rlen <- _ccall_ recvFrom__ s ptr nbytes ptr_addr
+ case (rlen::Int) of
-1 -> constructErrorAndFail "recvFrom"
n -> do
barr <- stToIO (unsafeFreezeByteArray ptr)
addr <- unpackSockAddrInet ptr_addr
- s <- unpackNBytesBAIO barr n
- return (s, n, addr)
+ str <- unpackNBytesBAIO barr n
+ return (str, n, addr)
\end{code}
\begin{code}
socketPort :: Socket -- Connected & Bound Socket
-> IO PortNumber -- Port Number of Socket
-socketPort sock@(MkSocket s AF_INET stype protocol status) =
+socketPort sock@(MkSocket _ AF_INET _ _ _) =
getSocketName sock >>= \(SockAddrInet port _) ->
return port
-socketPort (MkSocket s family stype protocol status) =
- fail (userError ("socketPort: not supported for Family " ++ show family))
+socketPort (MkSocket _ family _ _ _) =
+ ioError (userError ("socketPort: not supported for Family " ++ show family))
\end{code}
Calling $getPeerName$ returns the address details of the machine,
\begin{code}
getPeerName :: Socket -> IO SockAddr
-getPeerName (MkSocket s family stype protocol status) = do
- (ptr, sz) <- allocSockAddr family
- int_star <- stToIO (newIntArray (0,1))
- stToIO (writeIntArray int_star 0 sz)
+getPeerName (MkSocket s family _ _ _) = do
+ (ptr, a_sz) <- allocSockAddr family
+ int_star <- stToIO (newIntArray ((0::Int),1))
+ stToIO (writeIntArray int_star 0 a_sz)
status <- _ccall_ getPeerName s ptr int_star
- case status of
+ case (status::Int) of
-1 -> constructErrorAndFail "getPeerName"
_ -> do
sz <- stToIO (readIntArray int_star 0)
getSocketName :: Socket -> IO SockAddr
-getSocketName (MkSocket s family stype protocol status) = do
- (ptr, sz) <- allocSockAddr family
- int_star <- stToIO (newIntArray (0,1))
- stToIO (writeIntArray int_star 0 sz)
- status <- _ccall_ getSockName s ptr int_star
- case status of
+getSocketName (MkSocket s family _ _ _) = do
+ (ptr, a_sz) <- allocSockAddr family
+ int_star <- stToIO (newIntArray ((0::Int),1))
+ stToIO (writeIntArray int_star 0 a_sz)
+ rc <- _ccall_ getSockName s ptr int_star
+ case (rc::Int) of
-1 -> constructErrorAndFail "getSocketName"
_ -> do
sz <- stToIO (readIntArray int_star 0)
| RecvBuffer {- SO_RCVBUF -}
| KeepAlive {- SO_KEEPALIVE -}
| OOBInline {- SO_OOBINLINE -}
+#ifndef _WIN32
| MaxSegment {- TCP_MAXSEG -}
+#endif
| NoDelay {- TCP_NODELAY -}
-- | Linger {- SO_LINGER -}
#if 0
RecvBuffer -> ``SO_RCVBUF''
KeepAlive -> ``SO_KEEPALIVE''
OOBInline -> ``SO_OOBINLINE''
+#ifndef _WIN32
MaxSegment -> ``TCP_MAXSEG''
+#endif
NoDelay -> ``TCP_NODELAY''
#if 0
ReusePort -> ``SO_REUSEPORT'' -- BSD only?
-> SocketOption -- Option Name
-> Int -- Option Value
-> IO ()
-setSocketOption (MkSocket s family stype protocol status) so v = do
+setSocketOption (MkSocket s _ _ _ _) so v = do
rc <- _ccall_ setSocketOption__ s (packSocketOption so) v
- if rc /= 0
+ if rc /= (0::Int)
then constructErrorAndFail "setSocketOption"
else return ()
getSocketOption :: Socket
-> SocketOption -- Option Name
-> IO Int -- Option Value
-getSocketOption (MkSocket s family stype protocol status) so = do
+getSocketOption (MkSocket s _ _ _ _) so = do
rc <- _ccall_ getSocketOption__ s (packSocketOption so)
if rc == -1 -- let's just hope that value isn't taken..
then constructErrorAndFail "getSocketOption"
#endif
-#if cygwin32_TARGET_OS
+#if defined(cygwin32_TARGET_OS) || defined(mingw32_TARGET_OS)
data Family =
AF_UNSPEC -- unspecified
-- This is for a box running cygwin32 toolchain.
-#if defined(cygwin32_TARGET_OS)
+#if defined(mingw32_TARGET_OS) || defined(cygwin32_TARGET_OS)
data SocketType =
Stream
| Datagram
| Raw
| RDM -- reliably delivered msg
| SeqPacket
- | Packet
deriving (Eq, Ord, Ix, Show)
packSocketType stype =
Raw -> ``SOCK_RAW''
RDM -> ``SOCK_RDM''
SeqPacket -> ``SOCK_SEQPACKET''
- Packet -> ``SOCK_PACKET''
#endif
iNADDR_ANY :: HostAddress
iNADDR_ANY = unsafePerformIO (_casm_ `` %r = htonl(INADDR_ANY); '')
-sOMAXCONN = ``SOMAXCONN''::Int
+sOMAXCONN :: Int
+sOMAXCONN = ``SOMAXCONN''
+
+maxListenQueue :: Int
maxListenQueue = sOMAXCONN
-------------------------------------------------------------------------------
shutdown (MkSocket s _ _ _ _) stype = do
let t = sdownCmdToInt stype
status <- _ccall_ shutdownSocket s t
- case status of
+ case (status::Int) of
-1 -> constructErrorAndFail "shutdown"
_ -> return ()
-------------------------------------------------------------------------------
sClose :: Socket -> IO ()
-sClose (MkSocket s family stype protocol status) = _ccall_ close s
+sClose (MkSocket s _ _ _ _) = _ccall_ close s
-------------------------------------------------------------------------------
sIsConnected :: Socket -> IO Bool
-sIsConnected (MkSocket s family stype protocol status) = do
+sIsConnected (MkSocket _ _ _ _ status) = do
value <- readIORef status
return (value == Connected)
-------------------------------------------------------------------------------
sIsBound :: Socket -> IO Bool
-sIsBound (MkSocket s family stype protocol status) = do
+sIsBound (MkSocket _ _ _ _ status) = do
value <- readIORef status
return (value == Bound)
-------------------------------------------------------------------------------
sIsListening :: Socket -> IO Bool
-sIsListening (MkSocket s family stype protocol status) = do
+sIsListening (MkSocket _ _ _ _ status) = do
value <- readIORef status
return (value == Listening)
-------------------------------------------------------------------------------
sIsReadable :: Socket -> IO Bool
-sIsReadable (MkSocket s family stype protocol status) = do
+sIsReadable (MkSocket _ _ _ _ status) = do
value <- readIORef status
return (value == Listening || value == Connected)
-------------------------------------------------------------------------------
sIsWritable :: Socket -> IO Bool
-sIsWritable = sIsReadable
+sIsWritable = sIsReadable -- sort of.
-------------------------------------------------------------------------------
sIsAcceptable :: Socket -> IO Bool
-#ifndef cygwin32_TARGET_OS
-sIsAcceptable (MkSocket s AF_UNIX Stream protocol status) = do
+#if !defined(cygwin32_TARGET_OS) && !defined(mingw32_TARGET_OS)
+sIsAcceptable (MkSocket _ AF_UNIX Stream _ status) = do
value <- readIORef status
return (value == Connected || value == Bound || value == Listening)
-sIsAcceptable (MkSocket s AF_UNIX _ protocol status) =
- return False
+sIsAcceptable (MkSocket _ AF_UNIX _ _ _) = return False
#endif
-sIsAcceptable (MkSocket s _ stype protocol status) = do
+sIsAcceptable (MkSocket _ _ _ _ status) = do
value <- readIORef status
return (value == Connected || value == Listening)
inet_addr ipstr = do
had <- _ccall_ inet_addr ipstr
if had == (W# (int2Word# (negateInt# 1#))) -- hack to avoid depending on Int.intToWord here.
- then fail (userError ("inet_addr: Malformed address: " ++ ipstr))
+ then ioError (userError ("inet_addr: Malformed address: " ++ ipstr))
else return had -- network byte order
inet_ntoa :: HostAddress -> IO String
allocSockAddr :: Family -> IO (MutableByteArray RealWorld Int, Int)
-#ifndef cygwin32_TARGET_OS
+#if !defined(cygwin32_TARGET_OS) && !defined(mingw32_TARGET_OS)
allocSockAddr AF_UNIX = do
ptr <- allocChars ``sizeof(struct sockaddr_un)''
- let (_,sz) = boundsOfByteArray ptr
+ let (_,sz) = boundsOfMutableByteArray ptr
return (ptr, sz)
#endif
allocSockAddr AF_INET = do
ptr <- allocChars ``sizeof(struct sockaddr_in)''
- let (_,sz) = boundsOfByteArray ptr
+ let (_,sz) = boundsOfMutableByteArray ptr
return (ptr, sz)
-------------------------------------------------------------------------------
unpackSockAddr arr len = do
fam <- _casm_ ``%r = ((struct sockaddr*)%0)->sa_family;'' arr
case unpackFamily fam of
-#ifndef cygwin32_TARGET_OS
+#if !defined(cygwin32_TARGET_OS) && !defined(mingw32_TARGET_OS)
AF_UNIX -> unpackSockAddrUnix arr (len - ``sizeof(short)'')
#endif
AF_INET -> unpackSockAddrInet arr
-------------------------------------------------------------------------------
-#ifndef cygwin32_TARGET_OS
+#if !defined(cygwin32_TARGET_OS) && !defined(mingw32_TARGET_OS)
{-
sun_path is *not* NULL terminated, hence we *do* need to know the
packSockAddr :: SockAddr -> IO (MutableByteArray RealWorld Int)
-#ifndef cygwin32_TARGET_OS
+#if !defined(cygwin32_TARGET_OS) && !defined(mingw32_TARGET_OS)
packSockAddr (SockAddrUnix path) = do
(ptr,_) <- allocSockAddr AF_UNIX
_casm_ ``(((struct sockaddr_un *)%0)->sun_family) = AF_UNIX;'' ptr
#ifndef __PARALLEL_HASKELL__
socketToHandle :: Socket -> IOMode -> IO Handle
-socketToHandle (MkSocket fd family stype protocol status) m = do
- fo <- _ccall_ openFd fd file_mode flush_on_close
- fo <- makeForeignObj fo
- addForeignFinaliser fo (freeFileObject fo)
- mkBuffer__ fo 0 -- not buffered
- hndl <- newHandle (Handle__ fo htype NoBuffering socket_str)
- return hndl
+socketToHandle (MkSocket fd _ _ _ _) m = do
+ fileobj <- _ccall_ openFd fd (file_mode::Int) (file_flags::Int)
+ if fileobj == nullAddr then
+ ioError (userError "socketHandle: Failed to open file desc")
+ else do
+ fo <- mkForeignObj fileobj
+ addForeignFinalizer fo (freeFileObject fo)
+ mkBuffer__ fo 0 -- not buffered
+ hndl <- newHandle (Handle__ fo htype NoBuffering socket_str)
+ return hndl
where
socket_str = "<socket: "++show fd
+#ifdef _WIN32
+ file_flags = flush_on_close + 1024{-I'm a socket fd, me!-}
+#else
+ file_flags = flush_on_close
+#endif
+
(flush_on_close, file_mode) =
case m of
AppendMode -> (1, 0)
#endif
\end{code}
+If you're using WinSock, the programmer has to call a startup
+routine before starting to use the goods. So, if you want to
+stay portable across all ghc-supported platforms, you have to
+use @withSocketsDo@...:
+
+\begin{code}
+withSocketsDo :: IO a -> IO a
+#if !defined(HAVE_WINSOCK_H) || defined(cygwin32_TARGET_OS)
+withSocketsDo x = x
+#else
+withSocketsDo act = do
+ x <- initWinSock
+ if ( x /= 0 ) then
+ ioError (userError "Failed to initialise WinSock")
+ else do
+ v <- act
+ shutdownWinSock
+ return v
+
+foreign import "initWinSock" initWinSock :: IO Int
+foreign import "shutdownWinSock" shutdownWinSock :: IO ()
+
+#endif
+
+\end{code}
projects / ghc-hetmet.git / blobdiff