def test_successful_get_peers(self):
ts, datagrams = self.controller.main_loop()
ping_timeout_ts = ts
#FIXME: assert_almost_equal(ts, time.time()+2)
ping = datagrams[0].data
addr = datagrams[0].addr
#fabricate response
ping = self.servers_msg_f.incoming_msg(Datagram(ping, addr))
pong = self.servers_msg_f.outgoing_ping_response(tc.CLIENT_NODE)
data = pong.stamp(ping.tid)
# get a node in the routing table
self.controller.on_datagram_received(message.Datagram(data, addr))
#The lookup starts with a single node
lookup_result = []
datagrams = self.controller.get_peers(lookup_result, tc.INFO_HASH,
lambda x, y: x.append(y), 0)
#FIXME: assert_almost_equal(ts, ping_timeout_ts)#time.time()+2)
#FIXME: eq_(len(datagrams), 1)
# Now a get_peers with local results
info_hash = identifier.Id('info_hash info_hash ')
self.controller._tracker.put(info_hash, tc.CLIENT_ADDR)
lookup_result = []
self.controller.get_peers(lookup_result, info_hash,
lambda x, y: x.append(y), 0)
def _old(self):
# controller.start() starts reactor (we don't want to use reactor in
# tests), sets _running, and calls main_loop
self.controller._running = True
# controller.start calls main_loop, which does maintenance (bootstrap)
self.controller.main_loop()
# minitwisted informs of a response
data = message.OutgoingPingResponse(tc.CLIENT_NODE,
tc.SERVER_ID).stamp('\0\0')
self.controller.on_datagram_received(
message.Datagram(data, tc.SERVER_ADDR))
self.controller.main_loop() # maintenance (maintenance lookup)
def test_adding_and_removing_node(self):
# The routing table is initially empty
eq_(self.controller._routing_m.get_main_rnodes(), [])
q = self.controller.msg_f.outgoing_ping_query(tc.SERVER_NODE)
expected_ts, expected_datagrams = self.querier2.register_queries([q])
# main_loop is called by reactor.start()
# It returns a maintenance ping
ts, datagrams = self.controller.main_loop()
#FIXME: assert_almost_equal(ts, expected_ts)
eq_(len(datagrams), 1)
eq_(datagrams[0], expected_datagrams[0])
time.sleep((ts - time.time()) / 2)
# SERVER_NODE gets msg and replies before the timeout
tid = self.servers_msg_f.incoming_msg(
Datagram(datagrams[0].data, tc.CLIENT_ADDR)).tid
data = self.servers_msg_f.outgoing_ping_response(
tc.CLIENT_NODE).stamp(tid)
eq_(self.controller._routing_m.get_main_rnodes(), [])
datagram = message.Datagram(data, tc.SERVER_ADDR)
self.controller.on_datagram_received(datagram)
# SERVER_NODE is added to the routing table
eq_(self.controller._routing_m.get_main_rnodes(), [tc.SERVER_NODE])
time.sleep((ts - time.time()))
# main_loop is called to trigger timeout
# It returns a maintenance lookup
ts, datagrams = self.controller.main_loop()
q = self.controller.msg_f.outgoing_find_node_query(
tc.SERVER_NODE, self.my_id, None)
expected_ts, expected_datagrams = self.querier2.register_queries([q])
#FIXME: assert_almost_equal(ts, expected_ts)
#FIXME: eq_(len(datagrams), 1)
#FIXME: eq_(datagrams[0], expected_datagrams[0])
time.sleep(ts - time.time())
# main_loop is called to trigger timeout
# It triggers a timeout (removing SERVER_NODE from the routing table
# returns a maintenance ping
ts, datagrams = self.controller.main_loop()
#FIXME: eq_(self.controller._routing_m.get_main_rnodes(), [])
# No reply for this query
#this call should trigger timeout
self.controller.main_loop()
def register_queries(self, queries):
"""
A Querier object keeps a registry of sent queries while waiting for
responses.
"""
assert len(queries)
datagrams = []
current_ts = time.time()
timeout_ts = current_ts + TIMEOUT_DELAY
for i, query in enumerate(queries):
msg = query
tid = self._next_tid()
logger.debug('registering query %d to node: %r\n%r' %
(i, query.dst_node, msg))
self._timeouts.append((timeout_ts, msg))
# if node is not in the dictionary, it will create an empty list
self._pending.setdefault(query.dst_node.addr, []).append(msg)
datagrams.append(
message.Datagram(msg.stamp(tid), query.dst_node.addr))
return timeout_ts, datagrams
def test_retry_get_peers(self):
ts, datagrams = self.controller.main_loop()
ping_timeout_ts = ts
#FIXME: assert_almost_equal(ts, time.time()+2)
eq_(len(datagrams), 1)
ping = datagrams[0].data
addr = datagrams[0].addr
#this get_peers fails because there are no nodes in the routing table
datagrams = self.controller.get_peers(None, tc.INFO_HASH, None, 0)
eq_(len(datagrams), 0)
#fabricate response
ping = self.servers_msg_f.incoming_msg(Datagram(ping, addr))
pong = self.servers_msg_f.outgoing_ping_response(tc.CLIENT_NODE)
data = pong.stamp(ping.tid)
# get a node in the routing table
self.controller.on_datagram_received(message.Datagram(data, addr))
# This call does nothing because it's too early
ts, datagrams = self.controller.main_loop()
#eq_(ts, ping_timeout_ts)
eq_(datagrams, [])
# Controller retries lookup get_peers
time.sleep(ts - time.time())
ts, datagrams = self.controller.main_loop()
def test_bad_datagram_received(self):
ts, datagrams = self.controller.on_datagram_received(
message.Datagram('aa', tc.CLIENT_ADDR))
assert not datagrams
def on_datagram_received(self, datagram):
"""
Perform the actions associated to the arrival of the given
datagram. The datagram will be ignored in cases such as invalid
format. Otherwise, the datagram will be decoded and different modules
will be informed to take action on it. For instance, if the datagram
contains a response to a lookup query, both routing and lookup manager
will be informed. Additionally, if that response contains peers, the
lookup's handler will be called (see get\_peers above).
This method is designed to be used as minitwisted's networking handler.
"""
exp_queries_to_send = []
data = datagram.data
addr = datagram.addr
datagrams_to_send = []
try:
msg = self.msg_f.incoming_msg(datagram)
except (message.MsgError):
# ignore message
return self._next_main_loop_call_ts, datagrams_to_send
if msg.type == message.QUERY:
if msg.src_node.id == self._my_id:
logger.debug('Got a msg from myself:\n%r', msg)
return self._next_main_loop_call_ts, datagrams_to_send
#zinat: inform experimental_module
exp_queries_to_send = self._experimental_m.on_query_received(msg)
response_msg = self._responder.get_response(msg)
if response_msg:
bencoded_response = response_msg.stamp(msg.tid)
datagrams_to_send.append(
message.Datagram(bencoded_response, addr))
maintenance_queries_to_send = self._routing_m.on_query_received(
msg.src_node)
elif msg.type == message.RESPONSE:
related_query = self._querier.get_related_query(msg)
if not related_query:
# Query timed out or unrequested response
return self._next_main_loop_call_ts, datagrams_to_send
## zinat: if related_query.experimental_obj:
exp_queries_to_send = self._experimental_m.on_response_received(
msg, related_query)
#TODO: you need to get datagrams to be able to send messages (raul)
# lookup related tasks
if related_query.lookup_obj:
(lookup_queries_to_send, peers, num_parallel_queries,
lookup_done) = related_query.lookup_obj.on_response_received(
msg, msg.src_node)
datagrams = self._register_queries(lookup_queries_to_send)
datagrams_to_send.extend(datagrams)
lookup_obj = related_query.lookup_obj
lookup_id = lookup_obj.lookup_id
callback_f = lookup_obj.callback_f
if peers:
self._add_cache_peers(lookup_obj.info_hash, peers)
if callback_f and callable(callback_f):
callback_f(lookup_id, peers, msg.src_node)
if lookup_done:
if callback_f and callable(callback_f):
callback_f(lookup_id, None, msg.src_node)
queries_to_send = self._announce(related_query.lookup_obj)
datagrams = self._register_queries(queries_to_send)
datagrams_to_send.extend(datagrams)
# maintenance related tasks
maintenance_queries_to_send = \
self._routing_m.on_response_received(
msg.src_node, related_query.rtt, msg.all_nodes)
elif msg.type == message.ERROR:
related_query = self._querier.get_related_query(msg)
if not related_query:
# Query timed out or unrequested response
return self._next_main_loop_call_ts, datagrams_to_send
#TODO: zinat: same as response
exp_queries_to_send = self._experimental_m.on_error_received(
msg, related_query)
# lookup related tasks
if related_query.lookup_obj:
peers = None # an error msg doesn't have peers
(lookup_queries_to_send, num_parallel_queries,
lookup_done) = related_query.lookup_obj.on_error_received(
msg, addr)
datagrams = self._register_queries(lookup_queries_to_send)
datagrams_to_send.extend(datagrams)
callback_f = related_query.lookup_obj.callback_f
if callback_f and callable(callback_f):
lookup_id = related_query.lookup_obj.lookup_id
if lookup_done:
callback_f(lookup_id, None, msg.src_node)
if lookup_done:
datagrams = self._announce(related_query.lookup_obj)
datagrams_to_send.extend(datagrams)
# maintenance related tasks
maintenance_queries_to_send = \
self._routing_m.on_error_received(addr)
else: # unknown type
return self._next_main_loop_call_ts, datagrams_to_send
# we are done with the plugins
# now we have maintenance_queries_to_send, let's send them!
datagrams = self._register_queries(maintenance_queries_to_send)
datagrams_to_send.extend(datagrams)
if exp_queries_to_send:
datagrams = self._register_queries(exp_queries_to_send)
datagrams_to_send.extend(datagrams)
return self._next_main_loop_call_ts, datagrams_to_send
