Simple Scala Irc client

IrcClient.scala

import java.net._
import java.io._
import scala.io._
import scala.util.control.Breaks._

val server  = "irc.freenode.net";
val nick    = "SeymourCakes"
val login   = "SeymourCakesBot"
val channel = "#myoss"
val socket  = new Socket(server, 6667)
    val writer  = new BufferedWriter( new OutputStreamWriter(socket.getOutputStream( )));
val reader = new BufferedReader( new InputStreamReader(socket.getInputStream( )));

writer.write("NICK " + nick + "\r\n");
writer.write("USER " + login + " 8 * : Shitmores.blogspot.com Bot\r\n");
writer.flush();

var line = "";
breakable {
    while ({line = reader.readLine(); line != null}) {
        if (line.indexOf("004") >= 0) {
            println(" All ok, break now?")
            break;
        } else if (line.indexOf("433") >= 0) {
            println("Nickname is already in use.");
            break;
        }
    }
}

writer.write("JOIN " + channel + "\r\n");
writer.flush( );

while ({line = reader.readLine(); line != null}) {

    if (line.toLowerCase( ).startsWith("PING ")) {
        // We must respond to PINGs to avoid being disconnected.
        writer.write("PONG " + line.substring(5) + "\r\n");
        writer.write("PRIVMSG " + channel + " :I got pinged!\r\n");
        writer.flush( );
    } else {
        println(line);
    }
}