AnIRC

The IRC client implementation that is used by my robot. The aim is to provide simple enough support for modern features of IRC, but it isn't really complete.

The IrcClient class is the main class of the project. When a connection is established, a new thread is started to read messages. All message-related events are run on this thread.

Features

• Parsing of KVIrc gender codes.
• CTCP request parsing: there are currently different events for CTCP and non-CTCP messages.
• RPL_ISUPPORT extension parsing, and use of many tokens.
• Won't necessarily crash on servers that use non-standard status prefixes.
• IRCv3.2 capability negotiation, and use of account-notify, extended-join, multi-prefix and sasl.
• SASL PLAIN authentication.
• async methods for asynchronous requests and waiting for messages.

Example usage

IrcClient client;

void Initialize() {
	client = new IrcClient(new IrcLocalUser("Nickname", "Ident", "Full name"));
	client.ChannelMessage += OnChannelMessage;
	client.Connect("localhost", 6667);
}

async void OnChannelMessage(object sender, ChannelMessageEventArgs e) {
	try {
		var client = ((IrcClient) sender);

		if (e.Message.StartsWith(".ban ")) {
			if (e.Channel.Me.Status < ChannelStatus.Halfop) {
				e.Sender.Notice($"I'm not an op in {e.Channel.Name}.");
				return;
			}

			var nickname = e.Message.Substring(5).Trim();
			if (client.Users.TryGetValue(nickname, out var user) && user.Host != "*") {
				e.Channel.Ban("*!*@" + user.Host);
			} else {
				var result = await ((IrcClient) sender).WhoisAsync(e.Message.Substring(5).Trim());
				e.Channel.Ban("*!*@" + result.Host);
			}
		}
	} catch (AsyncRequestErrorException ex) when (ex.Line.Message == Replies.ERR_NOSUCHNICK) {
		e.Sender.Notice("No such nickname.");
	} catch (Exception ex) {
		e.Sender.Notice("The command failed: " + ex.Message);
	}
}