def test_option_normal(self):
self.ws.startProtocol()
self.clock.advance(0.1)
oack_datagram = OACKDatagram(self.options).to_wire()
self.assertEqual(self.transport.value(), oack_datagram)
self.clock.advance(3)
self.assertEqual(self.transport.value(), oack_datagram * 2)
self.transport.clear()
self.ws.datagramReceived(
DATADatagram(1, b'foobarbaz').to_wire(), ('127.0.0.1', 65465))
self.clock.pump((1, ) * 3)
self.assertEqual(self.transport.value(), ACKDatagram(1).to_wire())
self.assertEqual(self.ws.session.block_size, 9)
self.transport.clear()
self.ws.datagramReceived(
DATADatagram(2, b'smthng').to_wire(), ('127.0.0.1', 65465))
self.clock.pump((1, ) * 3)
self.assertEqual(self.transport.value(), ACKDatagram(2).to_wire())
self.clock.pump((1, ) * 10)
self.writer.finish()
self.assertEqual(
self.writer.file_path.open('r').read(), b'foobarbazsmthng')
self.assertTrue(self.transport.disconnecting)
def test_option_normal(self):
self.ws.startProtocol()
self.ws.datagramReceived(OACKDatagram({'blksize':'12'}).to_wire(), ('127.0.0.1', 65465))
self.clock.advance(0.1)
self.assertEqual(self.ws.session.block_size, WriteSession.block_size)
self.assertEqual(self.transport.value(), ACKDatagram(0).to_wire())
self.transport.clear()
self.ws.datagramReceived(OACKDatagram({'blksize':'9'}).to_wire(), ('127.0.0.1', 65465))
self.clock.advance(0.1)
self.assertEqual(self.ws.session.block_size, WriteSession.block_size)
self.assertEqual(self.transport.value(), ACKDatagram(0).to_wire())
self.transport.clear()
self.ws.datagramReceived(DATADatagram(1, 'foobarbaz').to_wire(), ('127.0.0.1', 65465))
self.clock.advance(3)
self.failUnless(self.ws.session.started)
self.clock.advance(0.1)
self.assertEqual(self.ws.session.block_size, 9)
self.assertEqual(self.transport.value(), ACKDatagram(1).to_wire())
self.transport.clear()
self.ws.datagramReceived(DATADatagram(2, 'asdfghjkl').to_wire(), ('127.0.0.1', 65465))
self.clock.advance(3)
self.assertEqual(self.transport.value(), ACKDatagram(2).to_wire())
self.writer.finish()
self.assertEqual(self.writer.file_path.open('r').read(), 'foobarbazasdfghjkl')
self.transport.clear()
self.ws.datagramReceived(OACKDatagram({'blksize':'12'}).to_wire(), ('127.0.0.1', 65465))
self.clock.advance(0.1)
self.assertEqual(self.ws.session.block_size, 9)
self.assertEqual(self.transport.value(), ACKDatagram(0).to_wire())
def test_option_normal(self):
self.rs.startProtocol()
self.rs.datagramReceived(
OACKDatagram({
b'blksize': b'9'
}).to_wire(), ('127.0.0.1', 65465))
self.clock.advance(0.1)
self.assertEqual(self.rs.session.block_size, 9)
self.clock.pump((1, ) * 3)
self.assertEqual(self.transport.value(),
DATADatagram(1, self.test_data[:9]).to_wire())
self.rs.datagramReceived(
OACKDatagram({
b'blksize': b'12'
}).to_wire(), ('127.0.0.1', 65465))
self.clock.advance(0.1)
self.assertEqual(self.rs.session.block_size, 9)
self.transport.clear()
self.rs.datagramReceived(
ACKDatagram(1).to_wire(), ('127.0.0.1', 65465))
self.clock.pump((1, ) * 3)
self.assertEqual(self.transport.value(),
DATADatagram(2, self.test_data[9:18]).to_wire())
self.addCleanup(self.rs.cancel)
def test_local_origin_write_session_handshake_success(self):
self.ws.session.block_size = 6
self.ws.startProtocol()
self.clock.advance(1)
data_datagram = DATADatagram(1, b'foobar')
self.ws.datagramReceived(data_datagram.to_wire(), ('127.0.0.1', 65465))
self.clock.pump((1,)*3)
self.assertEqual(self.transport.value(), ACKDatagram(1).to_wire())
self.assertFalse(self.transport.disconnecting)
self.addCleanup(self.ws.cancel)
def test_data(self):
# Zero-length payload
self.assertRaises(WireProtocolError, DATADatagram.from_wire, '')
# One byte payload
self.assertRaises(WireProtocolError, DATADatagram.from_wire, '\x00')
# Zero-length data
self.assertEqual(DATADatagram.from_wire('\x00\x01').to_wire(),
'\x00\x03\x00\x01')
# Full-length data
self.assertEqual(DATADatagram.from_wire('\x00\x01foobar').to_wire(),
'\x00\x03\x00\x01foobar')
def test_data(self):
# Zero-length payload
self.assertRaises(WireProtocolError, DATADatagram.from_wire, b'')
# One byte payload
self.assertRaises(WireProtocolError, DATADatagram.from_wire, b'\x00')
# Zero-length data
self.assertEqual(
DATADatagram.from_wire(b'\x00\x01').to_wire(), b'\x00\x03\x00\x01')
# Full-length data
self.assertEqual(
DATADatagram.from_wire(b'\x00\x01foobar').to_wire(),
b'\x00\x03\x00\x01foobar')
def test_remote_origin_read_session_started_rollover(self):
# if a rollover is done, we reach blocknum 0 again. But this time
# session is already started.
# Here we test the case where rollover has already happened
data_datagram = DATADatagram(1, self.test_data[:5])
data_datagram.opcode = OP_ACK
data_datagram.blocknum = 0
self.rs.session.block_size = 5
self.rs.startProtocol()
self.clock.pump((1, ) * 3)
self.assertEqual(self.rs._datagramReceived(data_datagram),
self.rs.session.datagramReceived(data_datagram))
self.addCleanup(self.rs.cancel)
def test_remote_origin_read_session_started_rollover(self):
# if a rollover is done, we reach blocknum 0 again. But this time
# session is already started.
# Here we test the case where rollover has already happened
data_datagram = DATADatagram(1, self.test_data[:5])
data_datagram.opcode = OP_ACK
data_datagram.blocknum = 0
self.rs.session.block_size = 5
self.rs.startProtocol()
self.clock.pump((1,)*3)
self.assertEqual(
self.rs._datagramReceived(data_datagram),
self.rs.session.datagramReceived(data_datagram))
self.addCleanup(self.rs.cancel)
def test_invalid_tid(self):
data_datagram = DATADatagram(1, b'foobar')
self.rs.datagramReceived(data_datagram, ('127.0.0.1', 11111))
self.clock.advance(0.1)
err_dgram = TFTPDatagramFactory(*split_opcode(self.transport.value()))
self.assertEqual(err_dgram.errorcode, ERR_TID_UNKNOWN)
self.addCleanup(self.rs.cancel)
def test_DATA(self):
self.ws.block_size = 6
data_datagram = DATADatagram(1, 'foobar')
d = self.ws.datagramReceived(data_datagram)
def cb(ign):
self.clock.advance(0.1)
#self.writer.finish()
#self.assertEqual(self.target.open('r').read(), 'foobar')
self.failIf(self.transport.disconnecting)
ack_dgram = TFTPDatagramFactory(*split_opcode(self.transport.value()))
self.assertEqual(ack_dgram.blocknum, 1)
self.failIf(self.ws.completed,
"Data length is equal to blocksize, no reason to stop")
data_datagram = DATADatagram(2, 'barbaz')
self.transport.clear()
d = self.ws.datagramReceived(data_datagram)
d.addCallback(cb_)
self.clock.advance(3)
return d
def cb_(ign):
self.clock.advance(0.1)
self.failIf(self.transport.disconnecting)
ack_dgram = TFTPDatagramFactory(*split_opcode(self.transport.value()))
self.assertEqual(ack_dgram.blocknum, 2)
self.failIf(self.ws.completed,
"Data length is equal to blocksize, no reason to stop")
d.addCallback(cb)
self.addCleanup(self.ws.cancel)
self.clock.advance(3)
return d
def test_invalid_tid(self):
self.rs.startProtocol()
data_datagram = DATADatagram(1, 'foobar')
yield self.rs.datagramReceived(data_datagram, ('127.0.0.1', 11111))
err_dgram = TFTPDatagramFactory(*split_opcode(self.transport.value()))
self.assertEqual(err_dgram.errorcode, ERR_TID_UNKNOWN)
self.addCleanup(self.rs.cancel)
def test_DATA_finished(self):
self.ws.block_size = 6
# Send a terminating datagram
data_datagram = DATADatagram(1, b'foo')
d = self.ws.datagramReceived(data_datagram)
def cb(res):
self.clock.advance(0.1)
self.assertEqual(self.target.open('r').read(), b'foo')
ack_dgram = TFTPDatagramFactory(
*split_opcode(self.transport.value()))
self.assertTrue(isinstance(ack_dgram, ACKDatagram))
self.assertTrue(
self.ws.completed,
"Data length is less, than blocksize, time to stop")
self.transport.clear()
# Send another datagram after the transfer is considered complete
data_datagram = DATADatagram(2, b'foobar')
self.ws.datagramReceived(data_datagram)
self.assertEqual(self.target.open('r').read(), b'foo')
err_dgram = TFTPDatagramFactory(
*split_opcode(self.transport.value()))
self.assertTrue(isinstance(err_dgram, ERRORDatagram))
# Check for proper disconnection after grace timeout expires
self.clock.pump((4, ) * 4)
self.assertTrue(
self.transport.disconnecting,
"We are done and the grace timeout is over, should disconnect")
d.addCallback(cb)
self.clock.advance(2)
return d
def test_DATA_backoff(self):
self.ws.block_size = 5
data_datagram = DATADatagram(1, b'foobar')
d = self.ws.datagramReceived(data_datagram)
def cb(ign):
self.clock.advance(0.1)
ack_datagram = ACKDatagram(1)
self.clock.pump((1, ) * 5)
# Sent two times - initial send and a retransmit after first timeout
self.assertEqual(self.transport.value(),
ack_datagram.to_wire() * 2)
# Sent three times - initial send and two retransmits
self.clock.pump((1, ) * 4)
self.assertEqual(self.transport.value(),
ack_datagram.to_wire() * 3)
# Sent still three times - initial send, two retransmits and the last wait
self.clock.pump((1, ) * 4)
self.assertEqual(self.transport.value(),
ack_datagram.to_wire() * 3)
self.assertTrue(self.transport.disconnecting)
d.addCallback(cb)
self.clock.advance(2.1)
return d
def test_time_out(self):
data_datagram = DATADatagram(1, 'foobar')
d = self.ws.datagramReceived(data_datagram)
def cb(ign):
self.clock.pump((1,)*13)
self.failUnless(self.transport.disconnecting)
d.addCallback(cb)
self.clock.advance(4)
return d
def cb(ign):
self.clock.pump((1, ) * 4)
# Sent two times - initial send and a retransmit after first timeout
self.assertEqual(self.transport.value(),
DATADatagram(2, self.test_data[:5]).to_wire() * 2)
# Sent three times - initial send and two retransmits
self.clock.pump((1, ) * 5)
self.assertEqual(self.transport.value(),
DATADatagram(2, self.test_data[:5]).to_wire() * 3)
# Sent still three times - initial send, two retransmits and the last wait
self.clock.pump((1, ) * 10)
self.assertEqual(self.transport.value(),
DATADatagram(2, self.test_data[:5]).to_wire() * 3)
self.assertTrue(self.transport.disconnecting)
def cb(ign):
self.clock.advance(0.1)
ack_datagram = ACKDatagram(2)
# This datagram doesn't trigger any sends
self.rs.datagramReceived(ack_datagram)
self.assertEqual(self.transport.value(), DATADatagram(2, self.test_data).to_wire())
self.failUnless(self.rs.completed,
"Data length is less, than blocksize, time to stop")
def test_failed_write(self):
self.writer.cancel()
self.ws.writer = FailingWriter()
data_datagram = DATADatagram(1, 'foobar')
yield self.ws.datagramReceived(data_datagram)
self.flushLoggedErrors()
self.clock.advance(0.1)
err_datagram = TFTPDatagramFactory(*split_opcode(self.transport.value()))
self.failUnless(isinstance(err_datagram, ERRORDatagram))
self.failUnless(self.transport.disconnecting)
def test_remote_origin_read_session_not_started_rollover(self):
# if a rollover is done, we reach blocknum 0 again. But this time
# session is already started.
# Here we test the case where rollover has not happened yet
data_datagram = DATADatagram(1, self.test_data[:5])
data_datagram.opcode = OP_ACK
data_datagram.blocknum = 0
self.rs.session.block_size = 5
self.clock.pump((1,)*3)
self.rs.session.transport = b"Fake"
self.rs.session.started = False
self.rs._datagramReceived(data_datagram)
self.assertEqual(self.rs.session.started, True)
self.assertEqual(self.rs.session.transport, self.rs.transport)
self.addCleanup(self.rs.cancel)
def test_remote_origin_read_session_not_started_rollover(self):
# if a rollover is done, we reach blocknum 0 again. But this time
# session is already started.
# Here we test the case where rollover has not happened yet
data_datagram = DATADatagram(1, self.test_data[:5])
data_datagram.opcode = OP_ACK
data_datagram.blocknum = 0
self.rs.session.block_size = 5
self.clock.pump((1, ) * 3)
self.rs.session.transport = b"Fake"
self.rs.session.started = False
self.rs._datagramReceived(data_datagram)
self.assertEqual(self.rs.session.started, True)
self.assertEqual(self.rs.session.transport, self.rs.transport)
self.addCleanup(self.rs.cancel)
def test_remote_origin_read_bootstrap(self):
# First datagram
self.rs.session.block_size = 5
self.rs.startProtocol()
self.clock.pump((1,)*3)
data_datagram_1 = DATADatagram(1, self.test_data[:5])
self.assertEqual(self.transport.value(), data_datagram_1.to_wire())
self.failIf(self.transport.disconnecting)
# Normal exchange continues
self.transport.clear()
self.rs.datagramReceived(ACKDatagram(1).to_wire(), ('127.0.0.1', 65465))
self.clock.pump((1,)*3)
data_datagram_2 = DATADatagram(2, self.test_data[5:10])
self.assertEqual(self.transport.value(), data_datagram_2.to_wire())
self.failIf(self.transport.disconnecting)
self.addCleanup(self.rs.cancel)
def test_DATA_invalid_blocknum(self):
self.ws.block_size = 6
data_datagram = DATADatagram(3, b'foobar')
yield self.ws.datagramReceived(data_datagram)
self.writer.finish()
self.assertFalse(self.target.open('r').read())
self.assertFalse(self.transport.disconnecting)
err_dgram = TFTPDatagramFactory(*split_opcode(self.transport.value()))
self.assertTrue(isinstance(err_dgram, ERRORDatagram))
self.addCleanup(self.ws.cancel)
def test_DATA_stale_blocknum(self):
self.ws.block_size = 6
self.ws.blocknum = 2
data_datagram = DATADatagram(1, b'foobar')
yield self.ws.datagramReceived(data_datagram)
self.writer.finish()
self.assertFalse(self.target.open('r').read())
self.assertFalse(self.transport.disconnecting)
ack_dgram = TFTPDatagramFactory(*split_opcode(self.transport.value()))
self.assertEqual(ack_dgram.blocknum, 1)
self.addCleanup(self.ws.cancel)
def test_option_normal(self):
self.rs.startProtocol()
self.clock.advance(0.1)
oack_datagram = OACKDatagram(self.options).to_wire()
self.assertEqual(self.transport.value(), oack_datagram)
self.clock.advance(3)
self.assertEqual(self.transport.value(), oack_datagram * 2)
self.transport.clear()
self.rs.datagramReceived(ACKDatagram(0).to_wire(), ('127.0.0.1', 65465))
self.clock.pump((1,)*3)
self.assertEqual(self.transport.value(), DATADatagram(1, self.test_data[:9]).to_wire())
self.addCleanup(self.rs.cancel)
def test_option_tsize(self):
# A tsize option sent as part of a write session is recorded.
self.ws.startProtocol()
self.clock.advance(0.1)
oack_datagram = OACKDatagram(self.options).to_wire()
self.assertEqual(self.transport.value(), oack_datagram)
self.failIf(self.transport.disconnecting)
self.assertIsInstance(self.ws.session, WriteSession)
# Options are not applied to the WriteSession until the first DATA
# datagram is received,
self.assertTrue(self.ws.session.tsize is None)
self.ws.datagramReceived(
DATADatagram(1, 'foobarbaz').to_wire(), ('127.0.0.1', 65465))
# The tsize option has been applied to the WriteSession.
self.assertEqual(45, self.ws.session.tsize)
def dataFromReader(self, data):
"""Got data from the reader. Send it to the network and start the timeout
cycle.
"""
# reached maximum number of blocks. Rolling over
if self.blocknum == 65536:
self.blocknum = 0
if len(data) < self.block_size:
self.completed = True
bytes = DATADatagram(self.blocknum, data).to_wire()
self.timeout_watchdog = timedCaller((0, ) + self.timeout,
partial(self.sendData, bytes),
self.timedOut,
clock=self._clock)
def dataFromReader(self, data):
"""Got data from the reader. Send it to the network and start the timeout
cycle.
"""
# reached maximum number of blocks. Rolling over
if self.blocknum == 65536:
self.blocknum = 0
if len(data) < self.block_size:
self.completed = True
bytes = DATADatagram(self.blocknum, data).to_wire()
self.timeout_watchdog = SequentialCall.run(self.timeout[:-1],
callable=self.sendData, callable_args=[bytes, ],
on_timeout=lambda: self._clock.callLater(self.timeout[-1], self.timedOut),
run_now=True,
_clock=self._clock
)
def test_remote_origin_write_bootstrap(self):
# Initial ACK
ack_datagram_0 = ACKDatagram(0)
self.clock.advance(0.1)
self.assertEqual(self.transport.value(), ack_datagram_0.to_wire())
self.failIf(self.transport.disconnecting)
# Normal exchange
self.transport.clear()
d = self.ws.datagramReceived(DATADatagram(1, 'foobar').to_wire(), ('127.0.0.1', 65465))
def cb(res):
self.clock.advance(0.1)
ack_datagram_1 = ACKDatagram(1)
self.assertEqual(self.transport.value(), ack_datagram_1.to_wire())
self.assertEqual(self.target.open('r').read(), 'foobar')
self.failIf(self.transport.disconnecting)
self.addCleanup(self.ws.cancel)
d.addCallback(cb)
self.clock.advance(3)
return d
def test_remote_origin_read_bootstrap(self):
# First datagram
self.rs.session.block_size = 5
self.rs.startProtocol()
self.clock.pump((1,)*3)
data_datagram_1 = DATADatagram(1, self.test_data[:5])
self.assertEqual(self.transport.value(), data_datagram_1.to_wire())
self.failIf(self.transport.disconnecting)
# Normal exchange continues
self.transport.clear()
self.rs.datagramReceived(ACKDatagram(1).to_wire(), ('127.0.0.1', 65465))
self.clock.pump((1,)*3)
data_datagram_2 = DATADatagram(2, self.test_data[5:10])
self.assertEqual(self.transport.value(), data_datagram_2.to_wire())
self.failIf(self.transport.disconnecting)
self.addCleanup(self.rs.cancel)