Network.IRC.Conduit

Conduits for serialising and deserialising IRC messages.

The Event, Message, and Source types are parameterised on the underlying representation, and are functors. Decoding and encoding only work in terms of ByteStrings, but the generality is provided so that programs using this library can operate in terms of Text, or some other more useful representation, with great ease.

Type synonyms

type ChannelName a = a

type NickName a = a

type ServerName a = a

type Reason a = Maybe a

type IsModeSet = Bool

type ModeFlag a = a

type ModeArg a = a

type NumericArg a = a

type Target a = a

The target of a message. Will be a nick or channel name.

type IrcEvent = Event ByteString

type IrcSource = Source ByteString

type IrcMessage = Message ByteString

Messages

data Event a

A decoded IRC message + source.

Constructors

Event

Fields

• _raw :: ByteString

  The message as a bytestring.

• _source :: Source a

  The source of the message (user, channel, or server).

• _message :: Message a

  The decoded message. This will never be a RawMsg.

Instances

Functor Event

Methods

fmap :: (a -> b) -> Event a -> Event b

(<$) :: a -> Event b -> Event a

Eq (NickName a) => Eq (Event a)

Methods

(==) :: Event a -> Event a -> Bool

(/=) :: Event a -> Event a -> Bool

Show (NickName a) => Show (Event a)

Methods

showsPrec :: Int -> Event a -> ShowS

show :: Event a -> String

showList :: [Event a] -> ShowS

data Source a

The source of an IRC message.

Constructors

User (NickName a)

The message comes directly from a user.

Channel (ChannelName a) (NickName a)

The message comes from a user in a channel.

Server (ServerName a)

The message comes directly from the server.

Instances

Functor Source

Methods

fmap :: (a -> b) -> Source a -> Source b

(<$) :: a -> Source b -> Source a

Eq (NickName a) => Eq (Source a)

Methods

(==) :: Source a -> Source a -> Bool

(/=) :: Source a -> Source a -> Bool

Show (NickName a) => Show (Source a)

Methods

showsPrec :: Int -> Source a -> ShowS

show :: Source a -> String

showList :: [Source a] -> ShowS

data Message a

A decoded IRC message.

Constructors

Privmsg (Target a) (Either CTCPByteString a)

A message, either from a user or to a channel the client is in. CTCPs are distinguished by starting and ending with a \001 (SOH).

Notice (Target a) (Either CTCPByteString a)

Like a privmsg, but should not provoke an automatic response.

Nick (NickName a)

Someone has updated their nick.

Join (ChannelName a)

Someone has joined a channel.

Part (ChannelName a) (Reason a)

Someone has left a channel.

Quit (Reason a)

Someone has left the network.

Mode (Target a) IsModeSet [ModeFlag a] [ModeArg a]

Someone has set some channel modes or user modes.

Topic (ChannelName a) a

Someone has set the topic of a channel.

Invite (ChannelName a) (NickName a)

The client has been invited to a channel.

Kick (ChannelName a) (NickName a) (Reason a)

Someone has been kicked from a channel.

Ping (ServerName a) (Maybe (ServerName a))

The client has received a server ping, and should send a pong asap.

Pong (ServerName a)

A pong sent to the named server.

Numeric Int [NumericArg a]

One of the many server numeric responses.

RawMsg a

Never produced by decoding, but can be used to send arbitrary bytestrings to the IRC server. Naturally, this should only be used when you are confident that the produced bytestring will be a valid IRC message.

Instances

Functor Message

Methods

fmap :: (a -> b) -> Message a -> Message b

(<$) :: a -> Message b -> Message a

Eq (Target a) => Eq (Message a)

Methods

(==) :: Message a -> Message a -> Bool

(/=) :: Message a -> Message a -> Bool

Show (Target a) => Show (Message a)

Methods

showsPrec :: Int -> Message a -> ShowS

show :: Message a -> String

showList :: [Message a] -> ShowS

Conduits

ircDecoder :: Monad m => Conduit ByteString m (Either ByteString IrcEvent)

A conduit which takes as input bytestrings representing encoded IRC messages, and decodes them to events. If decoding fails, the original bytestring is just passed through.

ircLossyDecoder :: Monad m => Conduit ByteString m IrcEvent

Like ircDecoder, but discards messages which could not be decoded.

ircEncoder :: Monad m => Conduit IrcMessage m ByteString

A conduit which takes as input irc messages, and produces as output the encoded bytestring representation.

floodProtector

Arguments

:: MonadIO m

=> NominalDiffTime

The minimum time between sending adjacent messages.

-> IO (Conduit a m a)

A conduit which rate limits output sent downstream. Awaiting on this conduit will block, even if there is output ready, until the time limit has passed.

Networking

ircClient

Arguments

:: Int

The port number

-> ByteString

The hostname

-> IO ()

Any initialisation work (started concurrently with the producer and consumer)

-> Consumer (Either ByteString IrcEvent) IO ()

The consumer of irc events

-> Producer IO IrcMessage

The producer of irc messages

-> IO ()

Connect to a network server, without TLS, and concurrently run the producer and consumer.

ircTLSClient :: Int -> ByteString -> IO () -> Consumer (Either ByteString IrcEvent) IO () -> Producer IO IrcMessage -> IO ()

Like ircClient, but with TLS.

ircWithConn

Arguments

:: ((AppData -> IO ()) -> IO ())

The initialised connection.

-> IO ()

-> Consumer (Either ByteString IrcEvent) IO ()

-> Producer IO IrcMessage

-> IO ()

Run the IRC conduits using a provided connection.

Starts the connection and concurrently run the initialiser, event consumer, and message sources. Terminates as soon as one throws an exception.

Utilities

rawMessage

Arguments

:: ByteString

The command

-> [ByteString]

The arguments

-> IrcMessage

Construct a raw message.

toByteString :: IrcMessage -> ByteString

Encode an IRC message into a single bytestring suitable for sending to the server.