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

        if (resp == null || resp.getResponse() == null) {