if ( key == null ) {
            // no valid header
            return null;
        }
        if ( this.smb2 ) {
            if ( key != -1 ) {
                return null;
            }
            int cmd = Encdec.dec_uint16le(this.sbuf, 4 + 12) & 0xFFFF;
            if ( cmd == 0x12 ) {

        this.isExists = true;

        if ( loadedAttributes ) {
            this.attrExpiration = this.sizeExpiration = System.currentTimeMillis() + getContext().getConfig().getAttributeCacheTimeout();
        }
    }


    private static String encodeRelativePath ( String name ) {
        // workaround fix
        if (name == null) {
            return null;
        }
        if (name.endsWith(" ")) {

        if ( log.isTraceEnabled() ) {
            log.trace("Release session " + usage + " " + this);
        }

        if ( usage == 0 ) {
            if ( log.isDebugEnabled() ) {
                log.debug("Usage dropped to zero, release connection " + this.transport);
            }
            synchronized ( this ) {
                if ( this.transportAcquired.compareAndSet(true, false) ) {