log.debug("Exception in disconnect", e);
        } finally {
            this.socket = null;
            this.digest = null;
            this.tconHostName = null;
            this.transportContext.getTransportPool().removeTransport(this);
        }
        return wasInUse;
    }

    @Override
    protected long makeKey(final Request request) throws IOException {
        long m = this.mid.incrementAndGet() - 1;