* @param customProvider
     * @throws Exception if Provider has already been initialized.
     */
    public static void initProvider(Provider customProvider) throws CIFSUnsupportedCryptoException {
        if (provider != null) {
            throw new CIFSUnsupportedCryptoException("Provider can't be re-initialized. Provider has already been initialized with "+ provider.getInfo());
        }
        provider = customProvider;

        "The file exists.",
        "The parameter is incorrect.",
        "Too many Uids active on this session.",
        "The Uid is not known as a valid user identifier on this session.",
        "The pipe has been ended.",
        "The filename, directory name, or volume label syntax is incorrect.",
        "The directory is not empty.",
        "Cannot create a file when that file already exists.",

        }

        if( ro == null || ro.length() == 0 ) {

            /* No resolveOrder has been specified, use the
             * default which is LMHOSTS,WINS,BCAST,DNS or just
             * LMHOSTS,BCAST,DNS if jcifs.smb1.netbios.wins has not
             * been specified.
             */

            if( nbns == null ) {
                resolveOrder = new int[3];

        in  = new DatagramPacket( rcv_buf, RCV_BUF_SIZE );

        if( RO == null || RO.length() == 0 ) {

            /* No resolveOrder has been specified, use the
             * default which is LMHOSTS,DNS,WINS,BCAST
             * LMHOSTS,BCAST,DNS if jcifs.smb1.netbios.wins has not
             * been specified.
             */

            if( NbtAddress.getWINSAddress() == null ) {
                resolveOrder = new int[2];

        "The parameter is incorrect.", "Too many Uids active on this session.", "The Uid is not known as a valid user identifier on this session.",
        "The pipe has been ended.", "The filename, directory name, or volume label syntax is incorrect.", "The directory is not empty.",
        "Cannot create a file when that file already exists.", "All pipe instances are busy.", "The pipe is being closed.",

        "The specified domain did not exist.", "The directory name is invalid.", "Access is denied.",
        "The format of the specified computer name is invalid.", "The pipe has been ended.", "The specified local group does not exist.",
        "Logon failure: the user has not been granted the requested logon type at this computer.",
        "The SAM database on the Windows NT Server does not have a computer account for this workstation trust relationship.",

            }
        }
        connectionState = 1; // trying ...

        try {
            /* The hostname to use in the path is only known for
             * sure if the NetBIOS session has been successfully
             * established.
             */
    
            session.transport.connect();

            unc = "\\\\" + session.transport.tconHostName + '\\' + share;
    

         * to(overrides negotiatedCapabilities).
         */

        /* We really should do the referral before this in case
         * the redirected target has different capabilities. But
         * the way we have been doing that is to call exists() which
         * calls this method so another technique will be necessary
         * to support DFS referral _to_ Win95/98/ME.
         */

     * @see jcifs.util.transport.Response#isError()
     */
    @Override
    public final boolean isError () {
        return this.error;
    }


    /**
     * @return whether the packet has been signed.
     */
    public boolean isSigned () {
        return ( getFlags() & SMB2_FLAGS_SIGNED ) != 0;
    }


    /**
     * {@inheritDoc}
     *

     *            If true the negotiation is only done if it is
     *            initiated by the client (MSIE post requests after successful NTLM SSP
     *            authentication). If false and the user has not been authenticated yet
     *            the client will be forced to send an authentication (server sends
     *            HttpServletResponse.SC_UNAUTHORIZED).
     * @return True if the negotiation is complete, otherwise false