240 lines
10 KiB
Python
240 lines
10 KiB
Python
import errno
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import socket
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import time
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import random
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import re
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from bmconfigparser import BMConfigParser
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from debug import logger
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import helper_bootstrap
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from network.proxy import Proxy
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import network.bmproto
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import network.tcp
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import network.udp
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from network.connectionchooser import chooseConnection
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import network.asyncore_pollchoose as asyncore
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import protocol
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from singleton import Singleton
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import state
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@Singleton
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class BMConnectionPool(object):
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def __init__(self):
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asyncore.set_rates(
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BMConfigParser().safeGetInt("bitmessagesettings", "maxdownloadrate") * 1024,
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BMConfigParser().safeGetInt("bitmessagesettings", "maxuploadrate") * 1024)
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self.outboundConnections = {}
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self.inboundConnections = {}
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self.listeningSockets = {}
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self.udpSockets = {}
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self.streams = []
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self.lastSpawned = 0
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self.spawnWait = 2
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self.bootstrapped = False
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def handleReceivedObject(self, streamNumber, hashid, connection = None):
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for i in self.inboundConnections.values() + self.outboundConnections.values():
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if not isinstance(i, network.bmproto.BMProto):
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continue
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if not i.fullyEstablished:
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continue
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try:
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with i.objectsNewToMeLock:
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del i.objectsNewToMe[hashid]
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except KeyError:
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with i.objectsNewToThemLock:
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i.objectsNewToThem[hashid] = time.time()
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if i == connection:
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try:
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with i.objectsNewToThemLock:
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del i.objectsNewToThem[hashid]
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except KeyError:
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pass
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def connectToStream(self, streamNumber):
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self.streams.append(streamNumber)
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def getConnectionByAddr(self, addr):
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if addr in self.inboundConnections:
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return self.inboundConnections[addr]
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if addr.host in self.inboundConnections:
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return self.inboundConnections[addr.host]
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if addr in self.outboundConnections:
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return self.outboundConnections[addr]
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if addr.host in self.udpSockets:
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return self.udpSockets[addr.host]
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raise KeyError
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def isAlreadyConnected(self, nodeid):
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for i in self.inboundConnections.values() + self.outboundConnections.values():
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try:
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if nodeid == i.nodeid:
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return True
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except AttributeError:
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pass
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return False
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def addConnection(self, connection):
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if isinstance(connection, network.udp.UDPSocket):
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return
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if connection.isOutbound:
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self.outboundConnections[connection.destination] = connection
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else:
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if connection.destination.host in self.inboundConnections:
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self.inboundConnections[connection.destination] = connection
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else:
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self.inboundConnections[connection.destination.host] = connection
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def removeConnection(self, connection):
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if isinstance(connection, network.udp.UDPSocket):
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del self.udpSockets[connection.listening.host]
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elif isinstance(connection, network.tcp.TCPServer):
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del self.listeningSockets[state.Peer(connection.destination.host, connection.destination.port)]
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elif connection.isOutbound:
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try:
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del self.outboundConnections[connection.destination]
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except KeyError:
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pass
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else:
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try:
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del self.inboundConnections[connection.destination]
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except KeyError:
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try:
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del self.inboundConnections[connection.destination.host]
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except KeyError:
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pass
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def getListeningIP(self):
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if BMConfigParser().safeGet("bitmessagesettings", "onionhostname").endswith(".onion"):
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host = BMConfigParser().safeGet("bitmessagesettings", "onionbindip")
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else:
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host = '127.0.0.1'
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if BMConfigParser().safeGetBoolean("bitmessagesettings", "sockslisten") or \
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BMConfigParser().get("bitmessagesettings", "socksproxytype") == "none":
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# python doesn't like bind + INADDR_ANY?
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#host = socket.INADDR_ANY
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host = BMConfigParser().get("network", "bind")
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return host
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def startListening(self, bind=None):
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if bind is None:
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bind = self.getListeningIP()
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port = BMConfigParser().safeGetInt("bitmessagesettings", "port")
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# correct port even if it changed
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ls = network.tcp.TCPServer(host=bind, port=port)
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self.listeningSockets[ls.destination] = ls
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def startUDPSocket(self, bind=None):
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if bind is None:
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host = self.getListeningIP()
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udpSocket = network.udp.UDPSocket(host=host, announcing=True)
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else:
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if bind is False:
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udpSocket = network.udp.UDPSocket(announcing=False)
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else:
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udpSocket = network.udp.UDPSocket(host=bind, announcing=True)
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self.udpSockets[udpSocket.listening.host] = udpSocket
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def loop(self):
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# defaults to empty loop if outbound connections are maxed
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spawnConnections = False
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acceptConnections = True
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if BMConfigParser().safeGetBoolean('bitmessagesettings', 'dontconnect'):
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acceptConnections = False
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else:
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spawnConnections = True
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if BMConfigParser().safeGetBoolean('bitmessagesettings', 'sendoutgoingconnections'):
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spawnConnections = True
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if BMConfigParser().get('bitmessagesettings', 'socksproxytype')[0:5] == 'SOCKS' and \
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(not BMConfigParser().getboolean('bitmessagesettings', 'sockslisten') and \
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".onion" not in BMConfigParser().get('bitmessagesettings', 'onionhostname')):
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acceptConnections = False
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if spawnConnections:
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if not self.bootstrapped:
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helper_bootstrap.dns()
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self.bootstrapped = True
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Proxy.proxy = (BMConfigParser().safeGet("bitmessagesettings", "sockshostname"),
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BMConfigParser().safeGetInt("bitmessagesettings", "socksport"))
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established = sum(1 for c in self.outboundConnections.values() if (c.connected and c.fullyEstablished))
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pending = len(self.outboundConnections) - established
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if established < BMConfigParser().safeGetInt("bitmessagesettings", "maxoutboundconnections"):
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for i in range(state.maximumNumberOfHalfOpenConnections - pending):
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try:
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chosen = chooseConnection(random.choice(self.streams))
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except ValueError:
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continue
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if chosen in self.outboundConnections:
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continue
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if chosen.host in self.inboundConnections:
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continue
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# don't connect to self
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if chosen in state.ownAddresses:
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continue
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#for c in self.outboundConnections:
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# if chosen == c.destination:
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# continue
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#for c in self.inboundConnections:
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# if chosen.host == c.destination.host:
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# continue
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try:
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if (BMConfigParser().safeGet("bitmessagesettings", "socksproxytype") == "SOCKS5"):
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self.addConnection(network.tcp.Socks5BMConnection(chosen))
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elif (BMConfigParser().safeGet("bitmessagesettings", "socksproxytype") == "SOCKS4a"):
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self.addConnection(network.tcp.Socks4aBMConnection(chosen))
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elif not chosen.host.endswith(".onion"):
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self.addConnection(network.tcp.TCPConnection(chosen))
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except socket.error as e:
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if e.errno == errno.ENETUNREACH:
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continue
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self.lastSpawned = time.time()
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if acceptConnections:
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if not self.listeningSockets:
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if BMConfigParser().safeGet("network", "bind") == '':
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self.startListening()
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else:
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for bind in re.sub("[^\w.]+", " ", BMConfigParser().safeGet("network", "bind")).split():
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self.startListening(bind)
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logger.info('Listening for incoming connections.')
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if not self.udpSockets:
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if BMConfigParser().safeGet("network", "bind") == '':
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self.startUDPSocket()
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else:
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for bind in re.sub("[^\w.]+", " ", BMConfigParser().safeGet("network", "bind")).split():
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self.startUDPSocket(bind)
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self.startUDPSocket(False)
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logger.info('Starting UDP socket(s).')
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else:
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if self.listeningSockets:
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for i in self.listeningSockets.values():
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i.handle_close()
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logger.info('Stopped listening for incoming connections.')
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if self.udpSockets:
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for i in self.udpSockets.values():
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i.handle_close()
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logger.info('Stopped udp sockets.')
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loopTime = float(self.spawnWait)
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if self.lastSpawned < time.time() - self.spawnWait:
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loopTime = 2.0
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asyncore.loop(timeout=loopTime, count=1000)
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reaper = []
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for i in self.inboundConnections.values() + self.outboundConnections.values():
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minTx = time.time() - 20
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if i.fullyEstablished:
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minTx -= 300 - 20
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if i.lastTx < minTx:
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if i.fullyEstablished:
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i.append_write_buf(protocol.CreatePacket('ping'))
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else:
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i.handle_close("Timeout (%is)" % (time.time() - i.lastTx))
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for i in self.inboundConnections.values() + self.outboundConnections.values() + self.listeningSockets.values() + self.udpSockets.values():
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if not (i.accepting or i.connecting or i.connected):
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reaper.append(i)
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for i in reaper:
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self.removeConnection(i)
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