ircc

IRC connection library for Node.js.

Sets up a connection to an IRC server and then gets out of the way. It doesn't respond to PINGs, doesn't send NICK and USER at the start of the session, et cetera.

Installation

$ npm install ircc

Dependencies

• Node.js 0.9.8 or above.
• ircp

Example

var ircc = require('ircc');

var connection = ircc.createConnection(6667, 'irc.example.com');

connection.on('message', function(message) {
  if (message.command === 'PRIVMSG')
    console.log message.parameters[0]+":", message.parameters[1]
    connection.send('PRIVMSGM', message.parameters[0], "HELLO!");
});

connection.on('connect', function() {
  connection.send('NICK', 'PrawnBoy');
  connection.send('USER', 'prawnboy', 0, 0, 'Insanity Prawn Boy');
});

API

ircc.createConnection(port, host, [connectListener])

Create a new Connection object and connect it to the IRC server at host:port. The connectListener is optional and will be attached as a listener to the connect event.

ircc.Connection

var connection = new ircc.Connection();

connection.connect(...)

Connect to an IRC server. Takes the same arguments as socket.connect(...). Throws an error if the connection is already up.

connection.close()

Close the connection. Throws an error if it was already closed.

connection.send(messageObject)

connection.send(command, [parameters...])

Send a message to the IRC server. The first argument is mandatory and can either be a message object or a string.

If the first argument is an object, no further arguments are expected. If it's a string, it's treated as the command and any further arguments are interpreted as the message parameters.

For example:

connection.send({command: 'KICK', parameters: ['#channel', 'marvin']});
connection.send('PRIVMSG', '#channel', 'Hi there, folks!');

connection.on('message', function(message) {})

Emitted when a message is received from the server. The message is an object, such as:

{ command: 'PART',
  parameters: [ '#channel' ],
  nick: 'nick',
  user: 'user',
  host: 'host',
  type: 'command' }

...or:

{ command: 'WELCOME',
  parameters:
   [ 'botname',
     'Welcome to the example IRC network!' ],
  server: 'irc.example.com',
  code: '001',
  type: 'reply' }

The type is either 'command', 'reply', 'error' or 'unknown'. If the message was a numeric response, code will be the original command, and command will be a human-readable substitute. For more details, see ircp.

connection.on('connect', function() {})

Emitted once the connection is succesfully set up.

connection.on('close', function() {})

Emitted after the connection is closed.

ircc.ParserStream and ircc.SerializerStream

var serializer = new ircc.SerializerStream();
var parser = new ircc.ParserStream();

These are used internally by Connection. They're Transform streams that form a stream-based interface to ircp's parse and serialize functions. The most common use case is to .pipe() them to a Socket connection to an IRC server:

var socket = net.createConnection(/*...*/);
serializer.pipe(socket).pipe(parser);

// The parser emits ircp message objects:
parser.on('readable', function() {
  var message;
  while (var message = parser.read()) {
    console.log(message); // { command: 'WELCOME', parameters: [...etc.
  }
});

// You can .write() outgoing message objects to the serializer:
var message = {
  command: 'PRIVMSG',
  parameters: [
    '#channel',
    'Hi there, folks!'
  ]
};
serializer.write(message);

Note that the SerializerStream doesn't take strings, just message objects.

License

Copyright (c) 2013, Peter-Paul van Gemerden <info@ppvg.nl>
All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.