Minor refactoring
This commit is contained in:
Jonathan Warren
parent
0833938ea3
commit
3527983fa6
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@ -151,9 +151,8 @@ class receiveDataThread(threading.Thread):
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# just received valid data from it. So update the knownNodes list so
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# that other peers can be made aware of its existance.
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if self.initiatedConnection and self.connectionIsOrWasFullyEstablished: # The remote port is only something we should share with others if it is the remote node's incoming port (rather than some random operating-system-assigned outgoing port).
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shared.knownNodesLock.acquire()
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with shared.knownNodesLock:
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shared.knownNodes[self.streamNumber][self.peer] = int(time.time())
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shared.knownNodesLock.release()
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#Strip the nulls
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command = command.rstrip('\x00')
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@ -488,35 +487,33 @@ class receiveDataThread(threading.Thread):
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self.sendDataThreadQueue.put((0, 'sendRawData', shared.CreatePacket('object',payload)))
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def _checkIPv4Address(self, host, hostFromAddrMessage):
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# print 'hostFromAddrMessage', hostFromAddrMessage
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def _checkIPv4Address(self, host, hostStandardFormat):
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# print 'hostStandardFormat', hostStandardFormat
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if host[0] == '\x7F':
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print 'Ignoring IP address in loopback range:', hostFromAddrMessage
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print 'Ignoring IP address in loopback range:', hostStandardFormat
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return False
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if host[0] == '\x0A':
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print 'Ignoring IP address in private range:', hostFromAddrMessage
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print 'Ignoring IP address in private range:', hostStandardFormat
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return False
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if host[0:2] == '\xC0\xA8':
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print 'Ignoring IP address in private range:', hostFromAddrMessage
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print 'Ignoring IP address in private range:', hostStandardFormat
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return False
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return True
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def _checkIPv6Address(self, host, hostFromAddrMessage):
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def _checkIPv6Address(self, host, hostStandardFormat):
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if host == ('\x00' * 15) + '\x01':
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print 'Ignoring loopback address:', hostFromAddrMessage
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print 'Ignoring loopback address:', hostStandardFormat
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return False
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if host[0] == '\xFE' and (ord(host[1]) & 0xc0) == 0x80:
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print 'Ignoring local address:', hostFromAddrMessage
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print 'Ignoring local address:', hostStandardFormat
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return False
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if (ord(host[0]) & 0xfe) == 0xfc:
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print 'Ignoring unique local address:', hostFromAddrMessage
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print 'Ignoring unique local address:', hostStandardFormat
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return False
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return True
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# We have received an addr message.
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def recaddr(self, data):
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#listOfAddressDetailsToBroadcastToPeers = []
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numberOfAddressesIncluded = 0
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numberOfAddressesIncluded, lengthOfNumberOfAddresses = decodeVarint(
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data[:10])
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@ -531,91 +528,56 @@ class receiveDataThread(threading.Thread):
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return
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for i in range(0, numberOfAddressesIncluded):
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try:
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fullHost = data[20 + lengthOfNumberOfAddresses + (38 * i):36 + lengthOfNumberOfAddresses + (38 * i)]
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except Exception as err:
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with shared.printLock:
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sys.stderr.write(
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'ERROR TRYING TO UNPACK recaddr (recaddrHost). Message: %s\n' % str(err))
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break # giving up on unpacking any more. We should still be connected however.
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try:
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recaddrStream, = unpack('>I', data[8 + lengthOfNumberOfAddresses + (
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38 * i):12 + lengthOfNumberOfAddresses + (38 * i)])
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except Exception as err:
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with shared.printLock:
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sys.stderr.write(
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'ERROR TRYING TO UNPACK recaddr (recaddrStream). Message: %s\n' % str(err))
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break # giving up on unpacking any more. We should still be connected however.
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if recaddrStream == 0:
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continue
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if recaddrStream != self.streamNumber and recaddrStream != (self.streamNumber * 2) and recaddrStream != ((self.streamNumber * 2) + 1): # if the embedded stream number is not in my stream or either of my child streams then ignore it. Someone might be trying funny business.
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continue
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try:
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recaddrServices, = unpack('>Q', data[12 + lengthOfNumberOfAddresses + (
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38 * i):20 + lengthOfNumberOfAddresses + (38 * i)])
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except Exception as err:
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with shared.printLock:
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sys.stderr.write(
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'ERROR TRYING TO UNPACK recaddr (recaddrServices). Message: %s\n' % str(err))
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break # giving up on unpacking any more. We should still be connected however.
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try:
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recaddrPort, = unpack('>H', data[36 + lengthOfNumberOfAddresses + (
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38 * i):38 + lengthOfNumberOfAddresses + (38 * i)])
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except Exception as err:
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with shared.printLock:
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sys.stderr.write(
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'ERROR TRYING TO UNPACK recaddr (recaddrPort). Message: %s\n' % str(err))
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break # giving up on unpacking any more. We should still be connected however.
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# print 'Within recaddr(): IP', recaddrIP, ', Port',
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# recaddrPort, ', i', i
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if fullHost[0:12] == '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF':
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ipv4Host = fullHost[12:]
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hostFromAddrMessage = socket.inet_ntop(socket.AF_INET, ipv4Host)
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if not self._checkIPv4Address(ipv4Host, hostFromAddrMessage):
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hostStandardFormat = socket.inet_ntop(socket.AF_INET, ipv4Host)
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if not self._checkIPv4Address(ipv4Host, hostStandardFormat):
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continue
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else:
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hostFromAddrMessage = socket.inet_ntop(socket.AF_INET6, fullHost)
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if hostFromAddrMessage == "":
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hostStandardFormat = socket.inet_ntop(socket.AF_INET6, fullHost)
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if hostStandardFormat == "":
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# This can happen on Windows systems which are not 64-bit compatible
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# so let us drop the IPv6 address.
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continue
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if not self._checkIPv6Address(fullHost, hostFromAddrMessage):
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if not self._checkIPv6Address(fullHost, hostStandardFormat):
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continue
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timeSomeoneElseReceivedMessageFromThisNode, = unpack('>Q', data[lengthOfNumberOfAddresses + (
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38 * i):8 + lengthOfNumberOfAddresses + (38 * i)]) # This is the 'time' value in the received addr message. 64-bit.
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if recaddrStream not in shared.knownNodes: # knownNodes is a dictionary of dictionaries with one outer dictionary for each stream. If the outer stream dictionary doesn't exist yet then we must make it.
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shared.knownNodesLock.acquire()
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with shared.knownNodesLock:
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shared.knownNodes[recaddrStream] = {}
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shared.knownNodesLock.release()
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peerFromAddrMessage = shared.Peer(hostFromAddrMessage, recaddrPort)
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peerFromAddrMessage = shared.Peer(hostStandardFormat, recaddrPort)
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if peerFromAddrMessage not in shared.knownNodes[recaddrStream]:
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if len(shared.knownNodes[recaddrStream]) < 20000 and timeSomeoneElseReceivedMessageFromThisNode > (int(time.time()) - 10800) and timeSomeoneElseReceivedMessageFromThisNode < (int(time.time()) + 10800): # If we have more than 20000 nodes in our list already then just forget about adding more. Also, make sure that the time that someone else received a message from this node is within three hours from now.
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shared.knownNodesLock.acquire()
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shared.knownNodes[recaddrStream][peerFromAddrMessage] = (
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timeSomeoneElseReceivedMessageFromThisNode)
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shared.knownNodesLock.release()
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with shared.knownNodesLock:
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shared.knownNodes[recaddrStream][peerFromAddrMessage] = timeSomeoneElseReceivedMessageFromThisNode
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with shared.printLock:
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print 'added new node', peerFromAddrMessage, 'to knownNodes in stream', recaddrStream
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shared.needToWriteKnownNodesToDisk = True
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hostDetails = (
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timeSomeoneElseReceivedMessageFromThisNode,
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recaddrStream, recaddrServices, hostFromAddrMessage, recaddrPort)
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#listOfAddressDetailsToBroadcastToPeers.append(hostDetails)
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recaddrStream, recaddrServices, hostStandardFormat, recaddrPort)
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shared.broadcastToSendDataQueues((
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self.streamNumber, 'advertisepeer', hostDetails))
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else:
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timeLastReceivedMessageFromThisNode = shared.knownNodes[recaddrStream][
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peerFromAddrMessage] # PORT in this case is either the port we used to connect to the remote node, or the port that was specified by someone else in a past addr message.
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if (timeLastReceivedMessageFromThisNode < timeSomeoneElseReceivedMessageFromThisNode) and (timeSomeoneElseReceivedMessageFromThisNode < int(time.time())):
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shared.knownNodesLock.acquire()
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peerFromAddrMessage]
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if (timeLastReceivedMessageFromThisNode < timeSomeoneElseReceivedMessageFromThisNode) and (timeSomeoneElseReceivedMessageFromThisNode < int(time.time())+900): # 900 seconds for wiggle-room in case other nodes' clocks aren't quite right.
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with shared.knownNodesLock:
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shared.knownNodes[recaddrStream][peerFromAddrMessage] = timeSomeoneElseReceivedMessageFromThisNode
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shared.knownNodesLock.release()
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#if listOfAddressDetailsToBroadcastToPeers != []:
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# self.broadcastaddr(listOfAddressDetailsToBroadcastToPeers)
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with shared.printLock:
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print 'knownNodes currently has', len(shared.knownNodes[self.streamNumber]), 'nodes for this stream.'
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@ -633,7 +595,7 @@ class receiveDataThread(threading.Thread):
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# We are going to share a maximum number of 1000 addrs with our peer.
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# 500 from this stream, 250 from the left child stream, and 250 from
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# the right child stream.
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shared.knownNodesLock.acquire()
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with shared.knownNodesLock:
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if len(shared.knownNodes[self.streamNumber]) > 0:
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for i in range(500):
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peer, = random.sample(shared.knownNodes[self.streamNumber], 1)
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@ -657,7 +619,6 @@ class receiveDataThread(threading.Thread):
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continue
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addrsInChildStreamRight[peer] = shared.knownNodes[
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(self.streamNumber * 2) + 1][peer]
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shared.knownNodesLock.release()
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numberOfAddressesInAddrMessage = 0
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payload = ''
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# print 'addrsInMyStream.items()', addrsInMyStream.items()
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@ -771,10 +732,9 @@ class receiveDataThread(threading.Thread):
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# in this version message. Let us inform the sendDataThread.
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self.sendDataThreadQueue.put((0, 'setRemoteProtocolVersion', self.remoteProtocolVersion))
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shared.knownNodesLock.acquire()
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with shared.knownNodesLock:
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shared.knownNodes[self.streamNumber][shared.Peer(self.peer.host, self.remoteNodeIncomingPort)] = int(time.time())
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shared.needToWriteKnownNodesToDisk = True
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shared.knownNodesLock.release()
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self.sendverack()
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if self.initiatedConnection == False:
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