log.debug(String.format("VALIDATE_NEGOTIATE_INFO response code 0x%x", e.getNtStatus()));
            }
            log.trace("VALIDATE_NEGOTIATE_INFO returned error", e);
            if (req.getResponse().isReceived() && req.getResponse().isVerifyFailed()
                    || e.getNtStatus() == NtStatus.NT_STATUS_ACCESS_DENIED) {
                // this is the signature error

            }
        }
        return "unknown";
    }

    private long extractNtStatus(Throwable cause) {
        if (cause instanceof SmbException) {
            return ((SmbException) cause).getNtStatus();
        }
        return 0;
    }

    private String extractServerMessage(Throwable cause) {
        if (cause instanceof SmbException) {
            // Try to get server message from SMB exception

                log.warn("Failed to set file attributes on " + path, e);
            } catch (final SmbException se) {
                log.trace("copyTo0", se);
                if (se.getNtStatus() != NtStatus.NT_STATUS_ACCESS_DENIED && se.getNtStatus() != NtStatus.NT_STATUS_OBJECT_NAME_COLLISION) {
                    throw se;
                }
            }
        }

        // Assert
        assertEquals("Unexpectedly reached end of file", ex.getMessage(), "Default message must match");
        assertEquals(NtStatus.NT_STATUS_UNSUCCESSFUL, ex.getNtStatus(), "Default NT status should be UNSUCCESSFUL");
        assertNull(ex.getCause(), "Cause should be null by default");
        assertNull(ex.getRootCause(), "Root cause should be null by default");

                if (LogStream.level > 1) {
                    log.println("NtlmHttpFilter: " + ntlm.getName() + ": 0x" + jcifs.smb1.util.Hexdump.toHexString(sae.getNtStatus(), 8)
                            + ": " + sae);
                }
                if (sae.getNtStatus() == NtStatus.NT_STATUS_ACCESS_VIOLATION) {
                    /* Server challenge no longer valid for
                     * externally supplied password hashes.

        status = winerr ? errcode : getStatusByCode(errcode);
    }

    /**
     * Returns the NT status code for this exception.
     *
     * @return the NT status code
     */
    public int getNtStatus() {
        return status;
    }

    /**
     * Returns the root cause of this exception if one exists
     *
     * @return the root cause throwable, or null if none exists
     */

                            n = resp.getDataLength();
                        } catch (final SmbException e) {
                            if (e.getNtStatus() == 0xC0000011) { // NT_STATUS_END_OF_FILE
                                log.debug("Reached end of file", e);
                                n = -1;
                            } else {

        SmbException thrown = assertThrows(SmbException.class, handle::close);

        // SmbException constructor maps non-NT status codes to NT_STATUS_UNSUCCESSFUL
        assertEquals(0xC0000001, thrown.getNtStatus()); // NT_STATUS_UNSUCCESSFUL
        verify(mockHandle, times(1)).sendrecv(any(MsrpcSamrCloseHandle.class));
    }

            }
            try {
                resp = th.send(req, resp, RequestParam.NO_TIMEOUT, RequestParam.NO_RETRY);
            } catch (final SmbException e) {
                if (e.getNtStatus() == 0xC0000120) {
                    // cancelled
                    log.debug("Request was cancelled", e);
                    return null;
                }
                throw e;
            }

                            }
                        } else {
                            if (e.getNtStatus() != 0xC000035C && e.getNtStatus() != 0xC0000203 || !trans.isSMB2()) {
                                throw e;
                            }
                            if (e.getNtStatus() == 0xC0000203) { // USER_SESSION_DELETED
                                try {