Streamly.Internal.Network.Socket

Documentation

data SockSpec

Specify the socket protocol details.

Constructors

SockSpec

Fields

• sockFamily :: !Family
• sockType :: !SocketType
• sockProto :: !ProtocolNumber
• sockOpts :: ![(SocketOption, Int)]

Use a socket

forSocketM :: (MonadMask m, MonadIO m) => (Socket -> m ()) -> Socket -> m ()

forSocketM action socket runs the monadic computation action passing the socket handle to it. The handle will be closed on exit from forSocketM, whether by normal termination or by raising an exception. If closing the handle raises an exception, then this exception will be raised by forSocketM rather than any exception raised by action.

withSocket :: (MonadIO m, MonadCatch m) => Socket -> (Socket -> Stream m a) -> Stream m a

Like forSocketM but runs a streaming computation instead of a monadic computation.

Inhibits stream fusion

Internal

Accept connections

accept :: MonadIO m => Int -> SockSpec -> SockAddr -> Stream m Socket

Start a TCP stream server that listens for connections on the supplied server address specification (address family, local interface IP address and port). The server generates a stream of connected sockets. The first argument is the maximum number of pending connections in the backlog.

Pre-release

acceptor :: MonadIO m => Unfold m (Int, SockSpec, SockAddr) Socket

Unfold a three tuple (listenQLen, spec, addr) into a stream of connected protocol sockets corresponding to incoming connections. listenQLen is the maximum number of pending connections in the backlog. spec is the socket protocol and options specification and addr is the protocol address where the server listens for incoming connections.

Connect

connect :: SockSpec -> SockAddr -> IO Socket

Connect to a remote host using the given socket specification and remote address. Returns a connected socket or throws an exception.

Pre-release

connectFrom :: SockSpec -> SockAddr -> SockAddr -> IO Socket

Connect to a remote host using the given socket specification, a local address to bind to and a remote address to connect to. Returns a connected socket or throws an exception.

Pre-release

Read from connection

getChunk :: Int -> Socket -> IO (Array Word8)

Read a byte array from a file handle up to a maximum of the requested size. If no data is available on the handle it blocks until some data becomes available. If data is available then it immediately returns that data without blocking.

Streams

read :: MonadIO m => Socket -> Stream m Word8

Generate a byte stream from a socket.

>>> read = Socket.readWith defaultChunkSize

Pre-release

readWith :: MonadIO m => Int -> Socket -> Stream m Word8

Generate a byte stream from a socket using a buffer of the given size.

Pre-release

readChunks :: MonadIO m => Socket -> Stream m (Array Word8)

Read a stream of byte arrays from a socket. The maximum size of a single array is limited to defaultChunkSize.

>>> readChunks = Socket.readChunksWith defaultChunkSize

Pre-release

readChunksWith :: MonadIO m => Int -> Socket -> Stream m (Array Word8)

readChunksWith bufsize socket reads a stream of arrays from socket. The maximum size of a single array is limited to bufsize.

Pre-release

Unfolds

reader :: MonadIO m => Unfold m Socket Word8

Unfolds a Socket into a byte stream. IO requests to the socket are performed in sizes of defaultChunkSize.

readerWith :: MonadIO m => Unfold m (Int, Socket) Word8

Unfolds the tuple (bufsize, socket) into a byte stream, read requests to the socket are performed using buffers of bufsize.

chunkReader :: MonadIO m => Unfold m Socket (Array Word8)

Unfolds a socket into a stream of Word8 arrays. Requests to the socket are performed using a buffer of size defaultChunkSize. The size of arrays in the resulting stream are therefore less than or equal to defaultChunkSize.

chunkReaderWith :: MonadIO m => Unfold m (Int, Socket) (Array Word8)

Unfold the tuple (bufsize, socket) into a stream of Word8 arrays. Read requests to the socket are performed using a buffer of size bufsize. The size of an array in the resulting stream is always less than or equal to bufsize.

Write to connection

putChunk :: Unbox a => Socket -> Array a -> IO ()

Write an Array to a socket.

Folds

write :: MonadIO m => Socket -> Fold m Word8 ()

Write a byte stream to a socket. Accumulates the input in chunks of up to defaultChunkSize bytes before writing.

>>> write = Socket.writeWith defaultChunkSize

writeWith :: MonadIO m => Int -> Socket -> Fold m Word8 ()

Write a byte stream to a socket. Accumulates the input in chunks of specified number of bytes before writing.

writeChunks :: (MonadIO m, Unbox a) => Socket -> Fold m (Array a) ()

Write a stream of arrays to a socket. Each array in the stream is written to the socket as a separate IO request.

writeChunksWith :: (MonadIO m, Unbox a) => Int -> Socket -> Fold m (Array a) ()

writeChunksWith bufsize socket writes a stream of arrays to socket after coalescing the adjacent arrays in chunks of bufsize. Multiple arrays are coalesed as long as the total size remains below the specified size. It never splits an array, if a single array is bigger than the specified size it emitted as it is.

writeMaybesWith :: MonadIO m => Int -> Socket -> Fold m (Maybe Word8) ()

Write a stream of Maybe values. Keep buffering the Just values in an array. Write the array to the Handle as soon as a Nothing is encountered or the buffer size exceeds the specified limit.

Pre-release

Stream writes

putChunks :: (MonadIO m, Unbox a) => Socket -> Stream m (Array a) -> m ()

Write a stream of arrays to a handle.

putBytesWith :: MonadIO m => Int -> Socket -> Stream m Word8 -> m ()

Like write but provides control over the write buffer. Output will be written to the IO device as soon as we collect the specified number of input elements.

putBytes :: MonadIO m => Socket -> Stream m Word8 -> m ()

Write a byte stream to a file handle. Combines the bytes in chunks of size up to defaultChunkSize before writing. Note that the write behavior depends on the IOMode and the current seek position of the handle.

Deprecated

readWithBufferOf :: MonadIO m => Unfold m (Int, Socket) Word8

Deprecated: Please use readerWith instead

Same as readWith

readChunksWithBufferOf :: MonadIO m => Unfold m (Int, Socket) (Array Word8)

Deprecated: Please use chunkReaderWith instead

Same as chunkReaderWith

writeWithBufferOf :: MonadIO m => Int -> Socket -> Fold m Word8 ()

Deprecated: Please use writeWith instead

Same as writeWith

writeChunksWithBufferOf :: (MonadIO m, Unbox a) => Int -> Socket -> Fold m (Array a) ()

Deprecated: Please use writeChunksWith instead

Same as writeChunksWith