}


    @Override
    public boolean isRequireSecureNegotiate () {
        return this.requireSecureNegotiate;
    }


    @Override
    public boolean isPort139FailoverEnabled () {
        return this.port139FailoverEnabled;
    }


    @Override
    public boolean isUseBatching () {
        return this.useBatching;
    }


    @Override

     * 
     * Property <tt>jcifs.smb.client.port139.enabled</tt> (boolean, default false)
     * 
     * @return whether to failover to legacy transport on port 139
     */
    boolean isPort139FailoverEnabled ();


    /**
     * 
     * Property <tt>jcifs.smb.client.useUnicode</tt> (boolean, default true)
     * 
     * @return whether to announce support for unicode
     */

        }

        SmbNegotiation resp;
        try {
            resp = negotiate(this.port);
        }
        catch ( IOException ce ) {
            if ( getContext().getConfig().isPort139FailoverEnabled() ) {
                this.port = ( this.port == 0 || this.port == DEFAULT_PORT ) ? 139 : DEFAULT_PORT;
                this.smb2 = false;
                this.mid.set(0);
                resp = negotiate(this.port);