main.go

package main

import (
	"crypto/tls"
	"fmt"
	"gopkg.in/sorcix/irc.v1"
	"net"
)

var (
	nick     = "yourgobotname"
	channel  = "#whateverchan"
	server   = "chat.freenode.net:6667"
	conn     net.Conn
	irc_conn *irc.Conn
	message  *irc.Message
	err      error
)

func join_cmds(taken bool) {
	if taken {
		nick += "_"
	}
	irc_conn.Encode(&irc.Message{Command: irc.NICK,
		Params: []string{nick}})
	irc_conn.Encode(&irc.Message{Command: irc.USER,
		Params: []string{nick, "0", "*", nick}})
}

func main() {
	// Try to connect via. TLS
	conn, err = tls.Dial("tcp", server, &tls.Config{InsecureSkipVerify: true})
	// If that fails fallback to tcp
	if err != nil {
		conn, err = net.Dial("tcp", server)
		if err != nil {
			fmt.Println("Failed to connect.")
		}
	}
	// pass it net.Conn
	irc_conn = irc.NewConn(conn)

	join_cmds(false)
	for {
		message, err = irc_conn.Decode()
		if err != nil {
			fmt.Println("Failed to decode.")
			break
		}
		switch message.Command {
		case irc.RPL_WELCOME:
			irc_conn.Encode(&irc.Message{Command: irc.JOIN,
				Params: []string{channel}})
		case irc.ERR_NICKNAMEINUSE:
			join_cmds(true)
		case irc.JOIN:
			fmt.Printf("%s joined\n", message.Name)
		case irc.PART:
			fmt.Printf("%s left\n", message.Name)
		case irc.PRIVMSG:
			fmt.Printf("from: %s body: %s\n", message.Name, message.Trailing)
		case irc.PING:
			irc_conn.Encode(&irc.Message{
				Command:  irc.PONG,
				Params:   message.Params,
				Trailing: message.Trailing,
			})
		}
	}
}