Data.Conduit.Network

Basic utilities

sourceSocket :: MonadIO m => Socket -> Producer m ByteString

Stream data from the socket.

This function does not automatically close the socket.

Since 0.0.0

sinkSocket :: MonadIO m => Socket -> Consumer ByteString m ()

Stream data to the socket.

This function does not automatically close the socket.

Since 0.0.0

Simple TCP server/client interface.

data AppData :: *

The data passed to an Application.

Instances

HasReadWrite AppData

appSource :: (HasReadWrite ad, MonadIO m) => ad -> Producer m ByteString

appSink :: (HasReadWrite ad, MonadIO m) => ad -> Consumer ByteString m ()

appSockAddr :: AppData -> SockAddr

appLocalAddr :: AppData -> Maybe SockAddr

Server

data ServerSettings :: *

Settings for a TCP server. It takes a port to listen on, and an optional hostname to bind to.

Instances

HasPort ServerSettings

HasAfterBind ServerSettings

serverSettings :: Int -> HostPreference -> ServerSettings

runTCPServer :: ServerSettings -> (AppData -> IO ()) -> IO a

Run an Application with the given settings. This function will create a new listening socket, accept connections on it, and spawn a new thread for each connection.

runTCPServerWithHandle :: ServerSettings -> ConnectionHandle -> IO a

forkTCPServer :: MonadBaseControl IO m => ServerSettings -> (AppData -> m ()) -> m ThreadId

Fork a TCP Server

Will fork the runGeneralTCPServer function but will only return from this call when the server is bound to the port and accepting incoming connections. Will return the thread id of the server

Since 1.1.4

runGeneralTCPServer :: MonadBaseControl IO m => ServerSettings -> (AppData -> m ()) -> m a

Run a general TCP server

Same as runTCPServer, except monad can be any instance of MonadBaseControl IO.

Note that any changes to the monadic state performed by individual client handlers will be discarded. If you have mutable state you want to share among multiple handlers, you need to use some kind of mutable variables.

Since 1.1.3

Client

data ClientSettings :: *

Settings for a TCP client, specifying how to connect to the server.

Instances

HasPort ClientSettings

clientSettings :: Int -> ByteString -> ClientSettings

runTCPClient :: ClientSettings -> (AppData -> IO a) -> IO a

Run an Application by connecting to the specified server.

runGeneralTCPClient :: MonadBaseControl IO m => ClientSettings -> (AppData -> m a) -> m a

Run a general TCP client

Same as runTCPClient, except monad can be any instance of MonadBaseControl IO.

Since 1.1.3

Getters

getPort :: HasPort a => a -> Int

getHost :: ClientSettings -> ByteString

getAfterBind :: HasAfterBind a => a -> Socket -> IO ()

getNeedLocalAddr :: ServerSettings -> Bool

Setters

setPort :: HasPort a => Int -> a -> a

setHost :: ByteString -> ClientSettings -> ClientSettings

setAfterBind :: HasAfterBind a => (Socket -> IO ()) -> a -> a

setNeedLocalAddr :: Bool -> ServerSettings -> ServerSettings

Types

data HostPreference :: *

Which host to bind.

Note: The IsString instance recognizes the following special values:

• * means HostAny
• *4 means HostIPv4
• !4 means HostIPv4Only
• *6 means HostIPv6
• !6 means HostIPv6Only

Any other values is treated as a hostname. As an example, to bind to the IPv4 local host only, use "127.0.0.1".

Instances

Eq HostPreference

Ord HostPreference

Read HostPreference

Show HostPreference

IsString HostPreference