Safe Haskell	None
Language	Haskell2010

Linux.Socket

Contents

Types
Message Flags
Socket Flags
Twiddle

Synopsis

newtype SocketFlags = SocketFlags CInt
dontWait :: MessageFlags m
truncate :: MessageFlags m
closeOnExec :: SocketFlags
nonblocking :: SocketFlags
applySocketFlags :: SocketFlags -> Type -> Type

Types

newtype SocketFlags Source #

Constructors

SocketFlags CInt

Instances

Eq SocketFlags Source #
Instance details Defined in Linux.Socket.Types Methods (==) :: SocketFlags -> SocketFlags -> Bool # (/=) :: SocketFlags -> SocketFlags -> Bool #
Semigroup SocketFlags Source #
Instance details Defined in Linux.Socket.Types Methods (<>) :: SocketFlags -> SocketFlags -> SocketFlags # sconcat :: NonEmpty SocketFlags -> SocketFlags # stimes :: Integral b => b -> SocketFlags -> SocketFlags #
Monoid SocketFlags Source #
Instance details Defined in Linux.Socket.Types Methods mempty :: SocketFlags # mappend :: SocketFlags -> SocketFlags -> SocketFlags # mconcat :: [SocketFlags] -> SocketFlags #
Bits SocketFlags Source #
Instance details Defined in Linux.Socket.Types Methods (.&.) :: SocketFlags -> SocketFlags -> SocketFlags # (.\|.) :: SocketFlags -> SocketFlags -> SocketFlags # xor :: SocketFlags -> SocketFlags -> SocketFlags # complement :: SocketFlags -> SocketFlags # shift :: SocketFlags -> Int -> SocketFlags # rotate :: SocketFlags -> Int -> SocketFlags # zeroBits :: SocketFlags # bit :: Int -> SocketFlags # setBit :: SocketFlags -> Int -> SocketFlags # clearBit :: SocketFlags -> Int -> SocketFlags # complementBit :: SocketFlags -> Int -> SocketFlags # testBit :: SocketFlags -> Int -> Bool # bitSizeMaybe :: SocketFlags -> Maybe Int # bitSize :: SocketFlags -> Int # isSigned :: SocketFlags -> Bool # shiftL :: SocketFlags -> Int -> SocketFlags # unsafeShiftL :: SocketFlags -> Int -> SocketFlags # shiftR :: SocketFlags -> Int -> SocketFlags # unsafeShiftR :: SocketFlags -> Int -> SocketFlags # rotateL :: SocketFlags -> Int -> SocketFlags # rotateR :: SocketFlags -> Int -> SocketFlags # popCount :: SocketFlags -> Int #

Message Flags

dontWait :: MessageFlags m Source #

The MSG_DONTWAIT receive flag or send flag.

truncate :: MessageFlags m Source #

The MSG_TRUNC receive flag.

Socket Flags

closeOnExec :: SocketFlags Source #

The SOCK_CLOEXEC receive flag or send flag.

nonblocking :: SocketFlags Source #

The SOCK_NONBLOCK receive flag or send flag.

Twiddle

applySocketFlags :: SocketFlags -> Type -> Type Source #

Linux extends the type argument of socket to accept flags. It is advisable to set SOCK_CLOEXEC on when opening a socket on linux. For example, we may open a TCP Internet socket with:

uninterruptibleSocket internet (applySocketFlags closeOnExec stream) defaultProtocol

To additionally open the socket in nonblocking mode (e.g. with SOCK_NONBLOCK):

uninterruptibleSocket internet (applySocketFlags (closeOnExec <> nonblocking) stream) defaultProtocol