forked from LBRYCommunity/lbry-sdk
263 lines
12 KiB
Python
263 lines
12 KiB
Python
#!/usr/bin/env python
|
|
#
|
|
# This library is free software, distributed under the terms of
|
|
# the GNU Lesser General Public License Version 3, or any later version.
|
|
# See the COPYING file included in this archive
|
|
|
|
import hashlib
|
|
import unittest
|
|
import struct
|
|
|
|
from twisted.internet import protocol, defer, selectreactor
|
|
from lbrynet.dht.msgtypes import ResponseMessage
|
|
import lbrynet.dht.node
|
|
import lbrynet.dht.constants
|
|
import lbrynet.dht.datastore
|
|
|
|
|
|
class NodeIDTest(unittest.TestCase):
|
|
""" Test case for the Node class's ID """
|
|
def setUp(self):
|
|
self.node = lbrynet.dht.node.Node()
|
|
|
|
def testAutoCreatedID(self):
|
|
""" Tests if a new node has a valid node ID """
|
|
self.failUnlessEqual(type(self.node.node_id), str, 'Node does not have a valid ID')
|
|
self.failUnlessEqual(len(self.node.node_id), 48, 'Node ID length is incorrect! '
|
|
'Expected 384 bits, got %d bits.' %
|
|
(len(self.node.node_id) * 8))
|
|
|
|
def testUniqueness(self):
|
|
""" Tests the uniqueness of the values created by the NodeID generator """
|
|
generatedIDs = []
|
|
for i in range(100):
|
|
newID = self.node._generateID()
|
|
# ugly uniqueness test
|
|
self.failIf(newID in generatedIDs, 'Generated ID #%d not unique!' % (i+1))
|
|
generatedIDs.append(newID)
|
|
|
|
def testKeyLength(self):
|
|
""" Tests the key Node ID key length """
|
|
for i in range(20):
|
|
id = self.node._generateID()
|
|
# Key length: 20 bytes == 160 bits
|
|
self.failUnlessEqual(len(id), 48,
|
|
'Length of generated ID is incorrect! Expected 384 bits, '
|
|
'got %d bits.' % (len(id)*8))
|
|
|
|
|
|
class NodeDataTest(unittest.TestCase):
|
|
""" Test case for the Node class's data-related functions """
|
|
def setUp(self):
|
|
import lbrynet.dht.contact
|
|
h = hashlib.sha384()
|
|
h.update('test')
|
|
self.node = lbrynet.dht.node.Node()
|
|
self.contact = lbrynet.dht.contact.Contact(h.digest(), '127.0.0.1', 12345,
|
|
self.node._protocol)
|
|
self.token = self.node.make_token(self.contact.compact_ip())
|
|
self.cases = []
|
|
for i in xrange(5):
|
|
h.update(str(i))
|
|
self.cases.append((h.digest(), 5000+2*i))
|
|
self.cases.append((h.digest(), 5001+2*i))
|
|
|
|
def testStore(self):
|
|
""" Tests if the node can store (and privately retrieve) some data """
|
|
for key, value in self.cases:
|
|
request = {
|
|
'port': value,
|
|
'lbryid': self.contact.id,
|
|
'token': self.token
|
|
}
|
|
self.node.store(key, request, self.contact.id, _rpcNodeContact=self.contact)
|
|
for key, value in self.cases:
|
|
expected_result = self.contact.compact_ip() + str(struct.pack('>H', value)) + \
|
|
self.contact.id
|
|
self.failUnless(self.node._dataStore.hasPeersForBlob(key),
|
|
'Stored key not found in node\'s DataStore: "%s"' % key)
|
|
self.failUnless(expected_result in self.node._dataStore.getPeersForBlob(key),
|
|
'Stored val not found in node\'s DataStore: key:"%s" port:"%s" %s'
|
|
% (key, value, self.node._dataStore.getPeersForBlob(key)))
|
|
|
|
|
|
class NodeContactTest(unittest.TestCase):
|
|
""" Test case for the Node class's contact management-related functions """
|
|
def setUp(self):
|
|
self.node = lbrynet.dht.node.Node()
|
|
|
|
def testAddContact(self):
|
|
""" Tests if a contact can be added and retrieved correctly """
|
|
import lbrynet.dht.contact
|
|
# Create the contact
|
|
h = hashlib.sha1()
|
|
h.update('node1')
|
|
contactID = h.digest()
|
|
contact = lbrynet.dht.contact.Contact(contactID, '127.0.0.1', 91824, self.node._protocol)
|
|
# Now add it...
|
|
self.node.addContact(contact)
|
|
# ...and request the closest nodes to it using FIND_NODE
|
|
closestNodes = self.node._routingTable.findCloseNodes(contactID, lbrynet.dht.constants.k)
|
|
self.failUnlessEqual(len(closestNodes), 1, 'Wrong amount of contacts returned; '
|
|
'expected 1, got %d' % len(closestNodes))
|
|
self.failUnless(contact in closestNodes, 'Added contact not found by issueing '
|
|
'_findCloseNodes()')
|
|
|
|
def testAddSelfAsContact(self):
|
|
""" Tests the node's behaviour when attempting to add itself as a contact """
|
|
import lbrynet.dht.contact
|
|
# Create a contact with the same ID as the local node's ID
|
|
contact = lbrynet.dht.contact.Contact(self.node.node_id, '127.0.0.1', 91824, None)
|
|
# Now try to add it
|
|
self.node.addContact(contact)
|
|
# ...and request the closest nodes to it using FIND_NODE
|
|
closestNodes = self.node._routingTable.findCloseNodes(self.node.node_id,
|
|
lbrynet.dht.constants.k)
|
|
self.failIf(contact in closestNodes, 'Node added itself as a contact')
|
|
|
|
|
|
class FakeRPCProtocol(protocol.DatagramProtocol):
|
|
def __init__(self):
|
|
self.reactor = selectreactor.SelectReactor()
|
|
self.testResponse = None
|
|
self.network = None
|
|
|
|
def createNetwork(self, contactNetwork):
|
|
"""
|
|
set up a list of contacts together with their closest contacts
|
|
@param contactNetwork: a sequence of tuples, each containing a contact together with its
|
|
closest contacts: C{(<contact>, <closest contact 1, ...,closest contact n>)}
|
|
"""
|
|
self.network = contactNetwork
|
|
|
|
def sendRPC(self, contact, method, args, rawResponse=False):
|
|
""" Fake RPC protocol; allows entangled.kademlia.contact.Contact objects to "send" RPCs"""
|
|
|
|
if method == "findNode":
|
|
# get the specific contacts closest contacts
|
|
closestContacts = []
|
|
closestContactsList = []
|
|
for contactTuple in self.network:
|
|
if contact == contactTuple[0]:
|
|
# get the list of closest contacts for this contact
|
|
closestContactsList = contactTuple[1]
|
|
# Pack the closest contacts into a ResponseMessage
|
|
for closeContact in closestContactsList:
|
|
closestContacts.append((closeContact.id, closeContact.address, closeContact.port))
|
|
message = ResponseMessage("rpcId", contact.id, closestContacts)
|
|
df = defer.Deferred()
|
|
df.callback((message, (contact.address, contact.port)))
|
|
return df
|
|
elif method == "findValue":
|
|
for contactTuple in self.network:
|
|
if contact == contactTuple[0]:
|
|
# Get the data stored by this remote contact
|
|
dataDict = contactTuple[2]
|
|
dataKey = dataDict.keys()[0]
|
|
data = dataDict.get(dataKey)
|
|
# Check if this contact has the requested value
|
|
if dataKey == args[0]:
|
|
# Return the data value
|
|
response = dataDict
|
|
print "data found at contact: " + contact.id
|
|
else:
|
|
# Return the closest contact to the requested data key
|
|
print "data not found at contact: " + contact.id
|
|
closeContacts = contactTuple[1]
|
|
closestContacts = []
|
|
for closeContact in closeContacts:
|
|
closestContacts.append((closeContact.id, closeContact.address,
|
|
closeContact.port))
|
|
response = closestContacts
|
|
|
|
# Create the response message
|
|
message = ResponseMessage("rpcId", contact.id, response)
|
|
df = defer.Deferred()
|
|
df.callback((message, (contact.address, contact.port)))
|
|
return df
|
|
|
|
def _send(self, data, rpcID, address):
|
|
""" fake sending data """
|
|
|
|
|
|
class NodeLookupTest(unittest.TestCase):
|
|
""" Test case for the Node class's iterativeFind node lookup algorithm """
|
|
|
|
def setUp(self):
|
|
# create a fake protocol to imitate communication with other nodes
|
|
self._protocol = FakeRPCProtocol()
|
|
# Note: The reactor is never started for this test. All deferred calls run sequentially,
|
|
# since there is no asynchronous network communication
|
|
# create the node to be tested in isolation
|
|
self.node = lbrynet.dht.node.Node('12345678901234567800', 4000, None, None, self._protocol)
|
|
self.updPort = 81173
|
|
self.contactsAmount = 80
|
|
# Reinitialise the routing table
|
|
self.node._routingTable = lbrynet.dht.routingtable.OptimizedTreeRoutingTable(
|
|
self.node.node_id)
|
|
|
|
# create 160 bit node ID's for test purposes
|
|
self.testNodeIDs = []
|
|
idNum = int(self.node.node_id)
|
|
for i in range(self.contactsAmount):
|
|
# create the testNodeIDs in ascending order, away from the actual node ID,
|
|
# with regards to the distance metric
|
|
self.testNodeIDs.append(idNum + i + 1)
|
|
|
|
# generate contacts
|
|
self.contacts = []
|
|
for i in range(self.contactsAmount):
|
|
contact = lbrynet.dht.contact.Contact(str(self.testNodeIDs[i]), "127.0.0.1",
|
|
self.updPort + i + 1, self._protocol)
|
|
self.contacts.append(contact)
|
|
|
|
# create the network of contacts in format: (contact, closest contacts)
|
|
contactNetwork = ((self.contacts[0], self.contacts[8:15]),
|
|
(self.contacts[1], self.contacts[16:23]),
|
|
(self.contacts[2], self.contacts[24:31]),
|
|
(self.contacts[3], self.contacts[32:39]),
|
|
(self.contacts[4], self.contacts[40:47]),
|
|
(self.contacts[5], self.contacts[48:55]),
|
|
(self.contacts[6], self.contacts[56:63]),
|
|
(self.contacts[7], self.contacts[64:71]),
|
|
(self.contacts[8], self.contacts[72:79]),
|
|
(self.contacts[40], self.contacts[41:48]),
|
|
(self.contacts[41], self.contacts[41:48]),
|
|
(self.contacts[42], self.contacts[41:48]),
|
|
(self.contacts[43], self.contacts[41:48]),
|
|
(self.contacts[44], self.contacts[41:48]),
|
|
(self.contacts[45], self.contacts[41:48]),
|
|
(self.contacts[46], self.contacts[41:48]),
|
|
(self.contacts[47], self.contacts[41:48]),
|
|
(self.contacts[48], self.contacts[41:48]),
|
|
(self.contacts[50], self.contacts[0:7]),
|
|
(self.contacts[51], self.contacts[8:15]),
|
|
(self.contacts[52], self.contacts[16:23]))
|
|
|
|
contacts_with_datastores = []
|
|
|
|
for contact_tuple in contactNetwork:
|
|
contacts_with_datastores.append((contact_tuple[0], contact_tuple[1],
|
|
lbrynet.dht.datastore.DictDataStore()))
|
|
self._protocol.createNetwork(contacts_with_datastores)
|
|
|
|
def testNodeBootStrap(self):
|
|
""" Test bootstrap with the closest possible contacts """
|
|
|
|
df = self.node._iterativeFind(self.node.node_id, self.contacts[0:8])
|
|
# Set the expected result
|
|
expectedResult = []
|
|
for item in self.contacts[0:6]:
|
|
expectedResult.append(item.id)
|
|
# Get the result from the deferred
|
|
activeContacts = df.result
|
|
|
|
# Check the length of the active contacts
|
|
self.failUnlessEqual(activeContacts.__len__(), expectedResult.__len__(),
|
|
"More active contacts should exist, there should be %d "
|
|
"contacts" % expectedResult.__len__())
|
|
|
|
# Check that the received active contacts are the same as the input contacts
|
|
self.failUnlessEqual(activeContacts, expectedResult,
|
|
"Active should only contain the closest possible contacts"
|
|
" which were used as input for the boostrap")
|