/**
     * {@inheritDoc}
     *
     * @see jcifs.SmbPipeHandle#isOpen()
     */
    @Override
    public boolean isOpen () {
        return this.open && this.handle != null && this.handle.isValid();
    }


    /**
     * 
     * {@inheritDoc}
     *
     * @see jcifs.smb.SmbPipeHandleInternal#getSessionKey()
     */
    @Override

     *
     * @throws IOException
     *             if a network error occurs
     */

    @Override
    public void close () throws IOException {
        try {
            if ( this.handle.isValid() ) {
                this.handle.close();
            }
        }
        finally {
            this.file.clearAttributeCache();
            this.tmp = null;
        }
    }


    /**

    public boolean isSigningNegotiated () {
        return ( this.negotiatedFlags2 & SmbConstants.FLAGS2_SECURITY_SIGNATURES ) == SmbConstants.FLAGS2_SECURITY_SIGNATURES;
    }


    @Override
    public boolean isValid ( CIFSContext ctx, SmbNegotiationRequest req ) {
        if ( getDialectIndex() > 10 ) {
            return false;
        }

     * @param file
     * @param openFlags
     * @return
     * @throws SmbException
     */
    synchronized SmbFileHandleImpl ensureOpen () throws CIFSException {
        if ( this.handle == null || !this.handle.isValid() ) {
            // one extra acquire to keep this open till the stream is released
            if ( this.file instanceof SmbNamedPipe ) {
                this.handle = this.file.openUnshared(

                            chunkInfo[ i ] = new SrvCopychunk(absoff, absoff, csize);
                            ioff += maxChunkSize;
                        }

                        if ( dfd == null || !dfd.isValid() ) {
                            // don't reopen the file for every round if it's not necessary, keep the lock
                            dfd = openCopyTargetFile(dest, src.getAttributes(), !write);
                        }

     */
    @Override
    public boolean canReuse ( CIFSContext tc, boolean forceSigning ) {
        return getConfig().equals(tc.getConfig());
    }


    @Override
    public boolean isValid ( CIFSContext tc, SmbNegotiationRequest req ) {
        if ( !isReceived() || getStatus() != 0 ) {
            return false;
        }

        if ( req.isSigningEnforced() && !isSigningEnabled() ) {

    /**
     * @return
     * @throws SmbException
     */
    synchronized SmbFileHandleImpl ensureOpen () throws CIFSException {
        // ensure file is open
        if ( this.handle == null || !this.handle.isValid() ) {
            // one extra acquire to keep this open till the stream is released
            this.handle = this.file.openUnshared(this.openFlags, this.access, this.sharing, SmbConstants.ATTR_NORMAL, this.options).acquire();