Network.Sendfile

Cross platform library for the sendfile system call. This library tries to call minimum system calls which are the bottleneck of web servers.

Documentation

sendfile :: Socket -> FilePath -> FileRange -> IO () -> IO ()

Simple binding for sendfile() of BSD and MacOS.

• Used system calls: open(), sendfile(), and close().

The fourth action argument is called when a file is sent as chunks. Chucking is inevitable if the socket is non-blocking (this is the default) and the file is large. The action is called after a chunk is sent and bofore waiting the socket to be ready for writing.

sendfileWithHeader :: Socket -> FilePath -> FileRange -> IO () -> [ByteString] -> IO ()

Simple binding for sendfile() of BSD and MacOS.

• Used system calls: open(), sendfile(), and close().

The fifth header is also sent with sendfile(). If the file is small enough, the header and the file is send in a single TCP packet on FreeBSD. MacOS sends the header and the file separately but it is fast.

The fourth action argument is called when a file is sent as chunks. Chucking is inevitable if the socket is non-blocking (this is the default) and the file is large. The action is called after a chunk is sent and bofore waiting the socket to be ready for writing.

sendfileFd :: Socket -> Fd -> FileRange -> IO () -> IO ()

Simple binding for sendfile() of BSD and MacOS.

• Used system calls: sendfile()

The fourth action argument is called when a file is sent as chunks. Chucking is inevitable if the socket is non-blocking (this is the default) and the file is large. The action is called after a chunk is sent and bofore waiting the socket to be ready for writing.

sendfileFdWithHeader :: Socket -> Fd -> FileRange -> IO () -> [ByteString] -> IO ()

Simple binding for sendfile() of BSD and MacOS.

• Used system calls: sendfile()

The fifth header is also sent with sendfile(). If the file is small enough, the header and the file is send in a single TCP packet on FreeBSD. MacOS sends the header and the file separately but it is fast.

The fourth action argument is called when a file is sent as chunks. Chucking is inevitable if the socket is non-blocking (this is the default) and the file is large. The action is called after a chunk is sent and bofore waiting the socket to be ready for writing.

data FileRange

File range for sendfile.

Constructors

EntireFile

PartOfFile

Fields

• rangeOffset :: Integer
• rangeLength :: Integer