def test_connection_ready_2(self):
""" Test if the connection will be ready after the connection is set up and the welcome packet has been
received.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
ready_handler = unittest.mock.Mock()
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.do_tcp_syn_ack(SERVER, CLIENT)
mock.do_tcp_input(SERVER, CLIENT, packets.welcome())
conn = NxtcpConnection(loop, SERVER.address)
conn.set_ready_handler(ready_handler)
ready_handler.assert_called_once_with(False)
ready_handler.reset_mock()
mock.run_events(loop.run_once)
ready_handler.assert_called_once_with(True)
def test_logout_1(self):
""" Test that a logout packet is send.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.do_tcp_syn_ack(SERVER, CLIENT)
mock.do_tcp_input(SERVER, CLIENT, packets.welcome())
conn = NxtcpConnection(loop, SERVER.address)
mock.run_events(loop.run_once)
# the expected packet
mock.expect_tcp_output(CLIENT, SERVER, packets.logout(name=b'name', ))
# put the verb upstream
conn.send_verb(verbs.LogoutVerb(name=b'name', ))
mock.run_events(loop.run_once)
def test_session_3(self):
""" Test that a Session verb is produced.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
downstream_handler = unittest.mock.Mock()
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.do_tcp_syn_ack(SERVER, CLIENT)
mock.do_tcp_input(SERVER, CLIENT, packets.welcome())
# send the packet
mock.do_tcp_input(
SERVER, CLIENT,
packets.session(b'name', packets.SESSION_STATE_STANDBY))
conn = NxtcpConnection(loop, SERVER.address)
conn.set_downstream_handler(downstream_handler)
mock.run_events(loop.run_once)
# verify the verb
downstream_handler.assert_called_once_with(
verbs.SessionVerb(b'name', verbs.SessionVerb.STATE_STANDBY))
def test_disconnect_2(self):
""" Test if the connection's ready status will be removed when the connection is closed on the server's end.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
ready_handler = unittest.mock.Mock()
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.do_tcp_syn_ack(SERVER, CLIENT)
conn = NxtcpConnection(loop, SERVER.address)
conn.set_ready_handler(ready_handler)
mock.run_events(loop.run_once)
ready_handler.assert_called_once_with(False)
ready_handler.reset_mock()
# now let the server close the connection and check if the ready_handler will be called with False
mock.do_tcp_fin(SERVER, CLIENT)
mock.expect_tcp_fin(CLIENT, SERVER)
mock.run_events(loop.run_once)
ready_handler.assert_not_called()
def test_connection_welcome_timeout(self):
""" Test that the connection will not report ready when the welcome packet is send too late.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
ready_handler = unittest.mock.Mock()
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.do_tcp_syn_ack(SERVER, CLIENT)
mock.expect_sleep(2.0)
mock.expect_tcp_fin(CLIENT, SERVER)
conn = NxtcpConnection(loop, SERVER.address)
conn.set_ready_handler(ready_handler)
ready_handler.assert_called_once_with(False)
ready_handler.reset_mock()
mock.run_events(loop.run_once)
ready_handler.assert_not_called()
def test_disconnect_reconnect_1(self):
""" Test if the connection will retry connecting after it was disconnected from the server.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
mock.system.add_unused_local_address(CLIENT)
ready_handler = unittest.mock.Mock()
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.do_tcp_syn_ack(SERVER, CLIENT)
mock.do_tcp_input(SERVER, CLIENT, packets.welcome())
conn = NxtcpConnection(loop, SERVER.address)
conn.set_ready_handler(ready_handler)
ready_handler.assert_called_once_with(False)
ready_handler.reset_mock()
mock.run_events(loop.run_once)
ready_handler.assert_called_once_with(True)
ready_handler.reset_mock()
# now close connection from server
mock.do_tcp_fin(SERVER, CLIENT)
mock.expect_tcp_fin(CLIENT, SERVER)
mock.run_events(loop.run_once)
ready_handler.assert_called_once_with(False)
ready_handler.reset_mock()
# now the connection should retry after 5 seconds
mock.expect_sleep(5.0)
mock.expect_tcp_syn(CLIENT, SERVER)
mock.run_events(loop.run_once)
# when this the connection is ready the callback should be called again
mock.do_tcp_syn_ack(SERVER, CLIENT)
mock.do_tcp_input(SERVER, CLIENT, packets.welcome())
mock.run_events(loop.run_once)
ready_handler.assert_called_once_with(True)
def test_connect_1(self):
""" Test if the connection will attempt to make an connection.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.expect_sleep(3.0)
conn = NxtcpConnection(loop, SERVER.address)
mock.run_events(loop.run_once)
def test_connect_retry_1(self):
""" Test if the connection will retry making an connection if the first attempt doesn't result in a success
within the timeout period.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
mock.system.add_unused_local_address(CLIENT)
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.expect_sleep(3.0)
mock.expect_sleep(5.0)
mock.expect_tcp_syn(CLIENT, SERVER)
conn = NxtcpConnection(loop, SERVER.address)
mock.run_events(loop.run_once)
def test_request_2(self):
""" Test that a request packet is send.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.do_tcp_syn_ack(SERVER, CLIENT)
mock.do_tcp_input(SERVER, CLIENT, packets.welcome())
conn = NxtcpConnection(loop, SERVER.address)
mock.run_events(loop.run_once)
# the expected packet
mock.expect_tcp_output(
CLIENT, SERVER,
packets.request(
name=b'name',
unidirectional=True,
messageref=0,
timeout_ms=0,
payload=b'payload',
))
# put the verb upstream
conn.send_verb(
verbs.RequestVerb(
name=b'name',
unidirectional=True,
messageref=None,
timeout=None,
payload=b'payload',
))
mock.run_events(loop.run_once)
def test_interest_2(self):
""" Test that a Interest verb is produced.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
downstream_handler = unittest.mock.Mock()
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.do_tcp_syn_ack(SERVER, CLIENT)
mock.do_tcp_input(SERVER, CLIENT, packets.welcome())
# send the packet
mock.do_tcp_input(
SERVER, CLIENT,
packets.interest(
postref=1234,
name=b'thename',
status=packets.INTEREST_STATUS_NOINTEREST,
topic=b'topic',
))
conn = NxtcpConnection(loop, SERVER.address)
conn.set_downstream_handler(downstream_handler)
mock.run_events(loop.run_once)
# verify the verb
downstream_handler.assert_called_once_with(
verbs.InterestVerb(
postref=1234,
name=b'thename',
status=verbs.InterestVerb.STATUS_NO_INTEREST,
topic=b'topic',
))
def test_call_2(self):
""" Test that a Call verb is produced.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
downstream_handler = unittest.mock.Mock()
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.do_tcp_syn_ack(SERVER, CLIENT)
mock.do_tcp_input(SERVER, CLIENT, packets.welcome())
# send the packet
mock.do_tcp_input(
SERVER, CLIENT,
packets.call(
unidirectional=True,
postref=1234,
name=b'name',
payload=b'payload',
))
conn = NxtcpConnection(loop, SERVER.address)
conn.set_downstream_handler(downstream_handler)
mock.run_events(loop.run_once)
# verify the verb
downstream_handler.assert_called_once_with(
verbs.CallVerb(
unidirectional=True,
postref=None,
name=b'name',
payload=b'payload',
))
def test_byebye_1(self):
""" Test that the client closes the connection when the server sends a byebye packet BEFORE the welcome packet.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.do_tcp_syn_ack(SERVER, CLIENT)
conn = NxtcpConnection(loop, SERVER.address)
mock.run_events(loop.run_once)
mock.do_tcp_input(SERVER, CLIENT, packets.byebye())
mock.expect_tcp_fin(CLIENT, SERVER)
mock.run_events(loop.run_once)
def test_keepalive_1(self):
""" Test if the connection will respond with a pong when the server sends a ping.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.do_tcp_syn_ack(SERVER, CLIENT)
mock.do_tcp_input(SERVER, CLIENT, packets.welcome())
conn = NxtcpConnection(loop, SERVER.address)
mock.expect_sleep(5.0)
mock.do_tcp_input(SERVER, CLIENT, packets.ping())
mock.expect_tcp_output(CLIENT, SERVER, packets.pong())
mock.run_events(loop.run_once)
def test_message_3(self):
""" Test that a Message verb is produced.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
downstream_handler = unittest.mock.Mock()
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.do_tcp_syn_ack(SERVER, CLIENT)
mock.do_tcp_input(SERVER, CLIENT, packets.welcome())
# send the packet
mock.do_tcp_input(
SERVER, CLIENT,
packets.message(
messageref=1234,
status=packets.MESSAGE_STATUS_UNREACHABLE,
payload=b'ignoreme',
))
conn = NxtcpConnection(loop, SERVER.address)
conn.set_downstream_handler(downstream_handler)
mock.run_events(loop.run_once)
# verify the verb
downstream_handler.assert_called_once_with(
verbs.MessageVerb(
messageref=1234,
status=verbs.MessageVerb.STATUS_UNREACHABLE,
payload=None,
))
def test_subscribe_1(self):
""" Test that a subscribe packet is send.
"""
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
mock.do_tcp_syn_ack(SERVER, CLIENT)
mock.do_tcp_input(SERVER, CLIENT, packets.welcome())
conn = NxtcpConnection(loop, SERVER.address)
mock.run_events(loop.run_once)
# the expected packet
mock.expect_tcp_output(
CLIENT, SERVER,
packets.subscribe(
messageref=1234,
name=b'name',
topic=b'topic',
))
# put the verb upstream
conn.send_verb(
verbs.SubscribeVerb(
messageref=1234,
name=b'name',
topic=b'topic',
))
mock.run_events(loop.run_once)
def test_cooldown_timeouts(self):
""" Test if the cooldown tieout increases in a certain pattern.
"""
pattern = [
5.0, 5.0, 5.0, 10.0, 10.0, 20.0, 30.0, 60.0, 60.0, 60.0, 60.0
]
mock = Sysmock()
mock.system.add_unused_local_address(CLIENT)
with patch(mock):
loop = Mainloop()
mock.expect_tcp_syn(CLIENT, SERVER)
conn = NxtcpConnection(loop, SERVER.address)
for cooldown in pattern:
mock.expect_sleep(3.0)
mock.expect_sleep(cooldown)
mock.expect_tcp_syn(CLIENT, SERVER)
mock.system.add_unused_local_address(CLIENT)
mock.run_events(loop.run_once)
# now let the connect succeed
mock.do_tcp_syn_ack(SERVER, CLIENT)
# and let the connection fail again
mock.do_tcp_fin(SERVER, CLIENT)
mock.expect_tcp_fin(CLIENT, SERVER)
mock.system.add_unused_local_address(CLIENT)
mock.run_events(loop.run_once)
# now the next cooldown timeout should be the first one in the pattern again
mock.expect_sleep(pattern[0])
mock.expect_tcp_syn(CLIENT, SERVER)
mock.system.add_unused_local_address(CLIENT)
mock.run_events(loop.run_once)
