PROTOCOL_HANDLERS.clear();
            Handler.factory = factory;
        }
    }

    /**
     * Returns the default HTTP port.
     *
     * @return An <code>int</code> containing the default HTTP port.
     */
    protected int getDefaultPort() {
        return DEFAULT_HTTP_PORT;
    }

    protected URLConnection openConnection(URL url) throws IOException {
        url = new URL(url, url.toExternalForm(),

public interface SmbTransportPool {

    /**
     * @param tf
     * @param name
     * @param port
     * @param exclusive
     * @param forceSigning
     * @return a connected transport
     * @throws UnknownHostException
     * @throws IOException
     */
    SmbTransport getSmbTransport ( CIFSContext tf, String name, int port, boolean exclusive, boolean forceSigning )
            throws UnknownHostException, IOException;

        path = u.getPath();
        ref = u.getRef();
        if ( ref != null ) {
            path += '#' + ref;
        }
        port = u.getPort();
        if ( port == -1 ) {
            port = getDefaultPort();
        }
        setURL(u, "smb", u.getHost(), port, u.getAuthority(), u.getUserInfo(), path, u.getQuery(), null);
    }

    /**
     * The default HTTPS port (<code>443</code>).
     */
    public static final int DEFAULT_HTTPS_PORT = 443;


    /**
     * @param tc
     *            context to use
     * 
     */
    public Handler ( CIFSContext tc ) {
        super(tc);
    }


    /**
     * Returns the default HTTPS port.
     *

                    int port = url.getPort();
                    if (port == -1) {
                        port = "https".equalsIgnoreCase(protocol) ? 443 : 80;
                    }
                    PasswordAuthentication auth =
                            Authenticator.requestPasswordAuthentication(null,
                                    port, protocol, "", authMethod);

        path = u.getPath();
        ref = u.getRef();
        if (ref != null) {
            path += '#' + ref;
        }
        port = u.getPort();
        if( port == -1 ) {
            port = getDefaultPort();
        }
        setURL( u, "smb", u.getHost(), port,
                    u.getAuthority(), u.getUserInfo(),
                    path, u.getQuery(), null );
    }

        return getChallenge(dc, 0);
    }

    public static byte[] getChallenge( UniAddress dc, int port )
                throws SmbException, UnknownHostException {
        SmbTransport trans = SmbTransport.getSmbTransport( dc, port );
        trans.connect();
        return trans.server.encryptionKey;
    }
/**
 * Authenticate arbitrary credentials represented by the

        this.transportContext = tc;
    }


    /**
     * Returns the default HTTP port.
     *
     * @return An <code>int</code> containing the default HTTP port.
     */
    @Override
    protected int getDefaultPort () {
        return DEFAULT_HTTP_PORT;
    }


    @Override
    protected URLConnection openConnection ( URL url ) throws IOException {

        this.lport = lport;
        this.laddr = laddr;

        try {
            baddr = Config.getInetAddress( "jcifs.smb1.netbios.baddr",
                        InetAddress.getByName( "255.255.255.255" ));
        } catch( UnknownHostException uhe ) {
        }

        snd_buf = new byte[SND_BUF_SIZE];
        rcv_buf = new byte[RCV_BUF_SIZE];

/**
 * Utility class holding several protocol constrants
 * 
 * @author mbechler
 *
 * @internal
 */
@SuppressWarnings ( "javadoc" )
public interface SmbConstants {

    static final int DEFAULT_PORT = 445;

    static final int DEFAULT_MAX_MPX_COUNT = 10;
    static final int DEFAULT_RESPONSE_TIMEOUT = 30000;
    static final int DEFAULT_SO_TIMEOUT = 35000;
    static final int DEFAULT_RCV_BUF_SIZE = 0xFFFF;