def all_is_lost_errback(failure):
if failure.check(BackendError):
# This failure is something that the TFTP server knows how to deal
# with, so pass it through.
return failure
else:
# Something broke badly; record it.
log.err(failure, "TFTP back-end failed.")
# Don't keep people waiting; tell them something broke right now.
raise BackendError(failure.getErrorMessage())
def test_generic_backend_error(self):
tftp = TFTP(BackendFactory(BackendError("A backend that couldn't")),
_clock=self.clock)
tftp.transport = self.transport
rrq_datagram = RRQDatagram(b'foobar', b'netascii', {})
tftp.datagramReceived(rrq_datagram.to_wire(), ('127.0.0.1', 1111))
self.clock.advance(1)
error_datagram = TFTPDatagramFactory(
*split_opcode(self.transport.value()))
self.assertEqual(error_datagram.errorcode, ERR_NOT_DEFINED)
self.transport.clear()
rrq_datagram = RRQDatagram(b'foobar', b'octet', {})
tftp.datagramReceived(rrq_datagram.to_wire(), ('127.0.0.1', 1111))
self.clock.advance(1)
error_datagram = TFTPDatagramFactory(
*split_opcode(self.transport.value()))
self.assertEqual(error_datagram.errorcode, ERR_NOT_DEFINED)