GoIRC Client Framework

Acquiring and Building

Pretty simple, really:

goinstall github.com/fluffle/goirc

You can build the test client also with:

make
./gobot

This will connect to freenode and join #go-nuts by default, so be careful ;-)

Using the framework

Synopsis:

import "flag"
import irc "github.com/fluffle/goirc/client"

func main() {
    flag.Parse() // parses the logging flags.
	c := irc.New("nick", "ident", "real name", false, nil, nil)
	// Optionally, enable SSL
	c.SSL = true

	// Add handlers to do things here!
	// e.g. join a channel on connect.
	c.AddHandler("connected",
		func(conn *irc.Conn, line *irc.Line) { conn.Join("#channel") })
	// And a signal on disconnect
	quit := make(chan bool)
	c.AddHandler("disconnected),
		func(conn *irc.Conn, line *irc.Line) { quit <- true }

	// Tell client to connect
	if err := c.Connect("irc.freenode.net"); err != nil {
		fmt.Printf("Connection error: %s\n", err.String())
	}

	// Wait for disconnect
	<-quit
}

The test client provides a good (if basic) example of how to use the framework. Reading client/handlers.go gives a more in-depth look at how handlers can be written. Commands to be sent to the server (e.g. PRIVMSG) are methods of the main *Conn struct, and can be found in client/commands.go (not all of the possible IRC commands are implemented yet). Events are produced directly from the messages from the IRC server, so you have to handle e.g. "332" for RPL_TOPIC to get the topic for a channel.

The vast majority of handlers implemented within the framework deal with state tracking of all nicks in any channels that the client is also present in. These handers are in client/state_handlers.go. State tracking is optional, and can be enabled by passing true as the fourth argument to client.New(). This API sucks and may change in the future.

Misc.

Sorry the documentation is crap. Use the source, Luke.

Feedback on design decisions is welcome. I am indebted to Matt Gruen for his work on go-bot which inspired the re-organisation and channel-based communication structure of *Conn.send() and *Conn.recv(). I'm sure things could be more asynchronous, still.

This code is (c) 2009-11 Alex Bramley, and released under the same licence terms as Go itself.