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| {-# LANGUAGE BangPatterns #-} | |
| {-# LANGUAGE CPP, ForeignFunctionInterface #-} | |
| -- ghc --make -O2 -funbox-strict-fields -threaded -rtsopts SimpleServer.hs | |
| import Network.Socket | |
| import System.Environment (getArgs) | |
| import Control.Concurrent | |
| import Control.Monad | |
| import Foreign | |
| import Foreign.C.Types | |
| import Network.Socket.Internal (throwSocketErrorIfMinus1RetryMayBlock) | |
| import qualified Data.ByteString as B | |
| import qualified Data.ByteString.Char8 as BC | |
| import qualified Data.ByteString.Internal as B | |
| import Control.Concurrent | |
| import Text.Printf (printf) | |
| listenQueueLength :: Int | |
| listenQueueLength = 8192 | |
| main = do | |
| args <- getArgs | |
| listenSock <- startListenSock (head args) | |
| acceptLoop listenSock 0 | |
| where | |
| acceptLoop :: Socket -> Int -> IO () | |
| acceptLoop listenSock !n = do | |
| (connsock, clientaddr) <- accept listenSock | |
| -- printf "%d:%s\n" n (show clientaddr) | |
| forkIO (serve connsock) | |
| acceptLoop listenSock (n+1) | |
| startListenSock :: String -> IO Socket | |
| startListenSock portNumber = do | |
| addrinfos <- getAddrInfo | |
| (Just (defaultHints {addrFlags = [AI_PASSIVE]})) | |
| Nothing | |
| (Just $ portNumber) | |
| let serveraddr = head addrinfos | |
| listenSock <- socket (addrFamily serveraddr) Stream defaultProtocol | |
| bindSocket listenSock (addrAddress serveraddr) | |
| setSocketOption listenSock ReuseAddr 1 | |
| listen listenSock listenQueueLength | |
| return listenSock | |
| fauxHeader :: B.ByteString | |
| fauxHeader = BC.pack s | |
| where | |
| s = "HTTP/1.1 200 OK\r\nDate: Tue, 09 Oct 2012 16:36:18 GMT\r\nContent-Length: 151\r\nServer: Mighttpd/2.8.1\r\nLast-Modified: Mon, 09 Jul 2012 03:42:33 GMT\r\nContent-Type: text/html\r\n\r\n" | |
| fauxIndex :: B.ByteString | |
| fauxIndex = BC.pack s | |
| where | |
| s = "<html>\n<head>\n<title>Welcome to nginx!</title>\n</head>\n<body bgcolor=\"white\" text=\"black\">\n<center><h1>Welcome to nginx!</h1></center>\n</body>\n</html>\n" | |
| fixedReply :: B.ByteString | |
| fixedReply = B.append fauxHeader fauxIndex | |
| fixedReplyLength :: Int | |
| fixedReplyLength = B.length fixedReply | |
| -- Expecting the following request | |
| expectedRequest :: BC.ByteString | |
| expectedRequest = | |
| BC.pack "GET / HTTP/1.1\r\nHost: 10.12.0.1:8080\r\nUser-Agent: weighttp/0.3\r\nConnection: keep-alive\r\n\r\n" | |
| expectedRequestLength :: Int | |
| expectedRequestLength = B.length expectedRequest | |
| recvBufferSize :: Int | |
| recvBufferSize = expectedRequestLength + 100 -- 100 extra bytes for good measure. | |
| serve :: Socket -> IO () | |
| serve sock = do | |
| recvBuffer <- mallocForeignPtrBytes recvBufferSize | |
| let (fixedReplyFPtr,_,_) = B.toForeignPtr fixedReply | |
| withForeignPtr fixedReplyFPtr $ \replyPtr -> | |
| withForeignPtr recvBuffer $ serveAux sock replyPtr | |
| serveAux :: Socket -> Ptr Word8 -> Ptr Word8 -> IO () | |
| serveAux sock fixedReplyPtr recvPtr = serveRequests | |
| where | |
| serveRequests = recv90 expectedRequestLength | |
| recv90 :: Int -> IO () | |
| recv90 !left | |
| | left == 0 = do reply | |
| yield | |
| recv90 expectedRequestLength | |
| | otherwise = do | |
| n <- socketRecv sock recvPtr left | |
| if n == 0 | |
| then return () | |
| else do when (n < 90) $ printf "incomplete receive: %d bytes\n" n | |
| recv90 (left - n) | |
| reply = sendAll' sock fixedReplyPtr fixedReplyLength | |
| socketRecv :: Socket -- ^ Connected socket | |
| -> Ptr Word8 | |
| -> Int -- ^ Maximum number of bytes to receive | |
| -> IO Int | |
| socketRecv socket ptr !nbytes | |
| | nbytes < 0 = error "socketRecv" | |
| | otherwise = recvInner (fdSocket socket) nbytes ptr | |
| recvInner :: CInt -> Int -> Ptr Word8 -> IO Int | |
| recvInner s !nbytes ptr = | |
| fmap fromIntegral $ | |
| throwSocketErrorIfMinus1RetryMayBlock "recvInner" | |
| (threadWaitRead (fromIntegral s)) $ | |
| c_recv s (castPtr ptr) (fromIntegral nbytes) 0 | |
| foreign import ccall unsafe "recv" | |
| c_recv :: CInt -> Ptr CChar -> CSize -> CInt -> IO CInt | |
| foreign import ccall unsafe "send" | |
| c_send :: CInt -> Ptr a -> CSize -> CInt -> IO CInt | |
| send' :: Socket -- ^ Connected socket | |
| -> Ptr a -- ^ Pointer to beginning of data to send | |
| -> Int -- ^ Amount of data to send | |
| -> IO Int -- ^ Number of bytes sent | |
| send' (MkSocket s _ _ _ _) ptr len = | |
| liftM fromIntegral $ | |
| throwSocketErrorIfMinus1RetryMayBlock "send'" | |
| (threadWaitWrite (fromIntegral s)) $ | |
| c_send s ptr (fromIntegral len) 0 | |
| sendAll' :: Socket -- ^ Connected socket | |
| -> Ptr a | |
| -> Int | |
| -> IO () | |
| sendAll' !sock !ptr !len = do | |
| sent <- send' sock ptr len | |
| when (sent < len) $ sendAll' sock (ptr `plusPtr` sent) (len - sent) |
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| -- ghc --make -threaded -rtsopts SimpleServerPrintRequest.hs | |
| import Network.Socket | |
| import qualified Network.Socket.ByteString as N | |
| import System.Environment (getArgs) | |
| main = do | |
| args <- getArgs | |
| listenSock <- startListenSock (head args) | |
| (connsock, clientaddr) <- accept listenSock | |
| serve connsock | |
| startListenSock :: String -> IO Socket | |
| startListenSock portNumber = do | |
| addrinfos <- getAddrInfo | |
| (Just (defaultHints {addrFlags = [AI_PASSIVE]})) | |
| Nothing | |
| (Just $ portNumber) | |
| let serveraddr = head addrinfos | |
| listenSock <- socket (addrFamily serveraddr) Stream defaultProtocol | |
| bindSocket listenSock (addrAddress serveraddr) | |
| setSocketOption listenSock ReuseAddr 1 | |
| listen listenSock 5 | |
| return listenSock | |
| serve :: Socket -> IO () | |
| serve sock = do | |
| bs <- N.recv sock 1000 | |
| print bs | |
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| {-# LANGUAGE BangPatterns #-} | |
| {-# LANGUAGE CPP, ForeignFunctionInterface #-} | |
| -- ghc --make -O2 -funbox-strict-fields -threaded -rtsopts SimpleServerWithTimers.hs | |
| import Network.Socket | |
| import System.Environment (getArgs) | |
| import Control.Monad | |
| import Foreign | |
| import Foreign.C.Types | |
| import Network.Socket.Internal (throwSocketErrorIfMinus1RetryMayBlock) | |
| import qualified Data.ByteString as B | |
| import qualified Data.ByteString.Char8 as BC | |
| import qualified Data.ByteString.Internal as B | |
| import Control.Concurrent | |
| import Text.Printf (printf) | |
| import GHC.Event (getTimerManager, {-EventManager, getSystemEventManager,-} registerTimeout, updateTimeout, TimeoutKey, TimerManager) | |
| import Debug.Trace | |
| listenQueueLength :: Int | |
| listenQueueLength = 8192 | |
| main = do | |
| args <- getArgs | |
| listenSock <- startListenSock (head args) | |
| acceptLoop listenSock 0 | |
| where | |
| acceptLoop :: Socket -> Int -> IO () | |
| acceptLoop listenSock !n = do | |
| (connsock, clientaddr) <- accept listenSock | |
| -- printf "%d:%s\n" n (show clientaddr) | |
| forkIO (serve connsock) | |
| acceptLoop listenSock (n+1) | |
| startListenSock :: String -> IO Socket | |
| startListenSock portNumber = do | |
| addrinfos <- getAddrInfo | |
| (Just (defaultHints {addrFlags = [AI_PASSIVE]})) | |
| Nothing | |
| (Just $ portNumber) | |
| let serveraddr = head addrinfos | |
| listenSock <- socket (addrFamily serveraddr) Stream defaultProtocol | |
| bindSocket listenSock (addrAddress serveraddr) | |
| setSocketOption listenSock ReuseAddr 1 | |
| listen listenSock listenQueueLength | |
| return listenSock | |
| fauxHeader :: B.ByteString | |
| fauxHeader = BC.pack s | |
| where | |
| s = "HTTP/1.1 200 OK\r\nDate: Tue, 09 Oct 2012 16:36:18 GMT\r\nContent-Length: 151\r\nServer: Mighttpd/2.8.1\r\nLast-Modified: Mon, 09 Jul 2012 03:42:33 GMT\r\nContent-Type: text/html\r\n\r\n" | |
| fauxIndex :: B.ByteString | |
| fauxIndex = BC.pack s | |
| where | |
| s = "<html>\n<head>\n<title>Welcome to nginx!</title>\n</head>\n<body bgcolor=\"white\" text=\"black\">\n<center><h1>Welcome to nginx!</h1></center>\n</body>\n</html>\n" | |
| fixedReply :: B.ByteString | |
| fixedReply = B.append fauxHeader fauxIndex | |
| fixedReplyLength :: Int | |
| fixedReplyLength = B.length fixedReply | |
| -- Expecting the following request | |
| expectedRequest :: BC.ByteString | |
| expectedRequest = | |
| BC.pack "GET / HTTP/1.1\r\nHost: 10.12.0.1:8080\r\nUser-Agent: weighttp/0.3\r\nConnection: keep-alive\r\n\r\n" | |
| expectedRequestLength :: Int | |
| expectedRequestLength = B.length expectedRequest | |
| recvBufferSize :: Int | |
| recvBufferSize = expectedRequestLength + 100 -- 100 extra bytes for good measure. | |
| timeoutValue :: Int | |
| timeoutValue = 30000000 | |
| serve :: Socket -> IO () | |
| serve sock = do | |
| Just timerManager <- getTimerManager -- getSystemEventManager -- | |
| timeoutKey <- registerTimeout timerManager timeoutValue (return ()) | |
| recvBuffer <- mallocForeignPtrBytes recvBufferSize | |
| let (fixedReplyFPtr,_,_) = B.toForeignPtr fixedReply | |
| withForeignPtr fixedReplyFPtr $ \replyPtr -> | |
| withForeignPtr recvBuffer $ | |
| serveAux sock timerManager timeoutKey replyPtr | |
| --type TimerManager = EventManager | |
| serveAux :: Socket -> TimerManager -> TimeoutKey -> Ptr Word8 -> Ptr Word8 -> IO () | |
| serveAux sock timerMgr timeoutKey fixedReplyPtr recvPtr = serveRequests | |
| where | |
| serveRequests = recv90 expectedRequestLength | |
| recv90 :: Int -> IO () | |
| recv90 !left | |
| | left == 0 = do reply | |
| updateTimeout timerMgr timeoutKey timeoutValue | |
| recv90 expectedRequestLength | |
| | otherwise = do | |
| n <- socketRecv sock recvPtr left | |
| if n == 0 | |
| then return () | |
| else do when (n < 90) $ printf "incomplete receive: %d bytes\n" n | |
| recv90 (left - n) | |
| reply = sendAll' sock fixedReplyPtr fixedReplyLength | |
| socketRecv :: Socket -- ^ Connected socket | |
| -> Ptr Word8 | |
| -> Int -- ^ Maximum number of bytes to receive | |
| -> IO Int | |
| socketRecv socket ptr !nbytes | |
| | nbytes < 0 = error "socketRecv" | |
| | otherwise = recvInner (fdSocket socket) nbytes ptr | |
| recvInner :: CInt -> Int -> Ptr Word8 -> IO Int | |
| recvInner s !nbytes ptr = | |
| fmap fromIntegral $ | |
| throwSocketErrorIfMinus1RetryMayBlock "recvInner" | |
| (threadWaitRead (fromIntegral s)) $ | |
| c_recv s (castPtr ptr) (fromIntegral nbytes) 0 | |
| foreign import ccall unsafe "recv" | |
| c_recv :: CInt -> Ptr CChar -> CSize -> CInt -> IO CInt | |
| foreign import ccall unsafe "send" | |
| c_send :: CInt -> Ptr a -> CSize -> CInt -> IO CInt | |
| send' :: Socket -- ^ Connected socket | |
| -> Ptr a -- ^ Pointer to beginning of data to send | |
| -> Int -- ^ Amount of data to send | |
| -> IO Int -- ^ Number of bytes sent | |
| send' (MkSocket s _ _ _ _) ptr len = | |
| liftM fromIntegral $ | |
| throwSocketErrorIfMinus1RetryMayBlock "send'" | |
| (threadWaitWrite (fromIntegral s)) $ | |
| c_send s ptr (fromIntegral len) 0 | |
| sendAll' :: Socket -- ^ Connected socket | |
| -> Ptr a | |
| -> Int | |
| -> IO () | |
| sendAll' !sock !ptr !len = do | |
| sent <- send' sock ptr len | |
| when (sent < len) $ sendAll' sock (ptr `plusPtr` sent) (len - sent) |
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