}

                int permits = r.getInitialCredits();
                if ( permits > 0 ) {
                    this.credits.release(permits);
                }
                Arrays.fill(this.sbuf, (byte) 0);
                return new SmbNegotiation(
                    new Smb2NegotiateRequest(
                        getContext().getConfig(),

            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) ) {
                    this.transport.release();
                }

        if ( this.treeHandle == null || !this.treeHandle.isConnected() ) {
            if ( this.treeHandle != null && this.transportContext.getConfig().isStrictResourceLifecycle() ) {
                this.treeHandle.release();
            }
            this.treeHandle = this.treeConnection.connectWrapException(this.fileLocator);
            this.treeHandle.ensureDFSResolved();