Python logger.FakeLogger类代码示例

	def __init__ (self, peer):
		try:
			self.logger = Logger()
		except RuntimeError:
			self.logger = FakeLogger()
		self.peer = peer
		self.neighbor = peer.neighbor
		self.negotiated = Negotiated(self.neighbor)
		self.connection = None

		if self.neighbor.connect:
			self.port = self.neighbor.connect
		elif os.environ.get('exabgp.tcp.port','').isdigit():
			self.port = int(os.environ.get('exabgp.tcp.port'))
		elif os.environ.get('exabgp_tcp_port','').isdigit():
			self.port = int(os.environ.get('exabgp_tcp_port'))
		else:
			self.port = 179

		# XXX: FIXME: check the the -19 is correct (but it is harmless)
		# The message size is the whole BGP message _without_ headers
		self.message_size = Message.MAX_LEN-Message.HEADER_LEN

		from exabgp.configuration.environment import environment
		self.log_routes = environment.settings().log.routes

	def __init__ (self,afi,peer,local):
		# peer and local are strings of the IP

		# If the OS tells us we have data on the socket, we should never have to wait more than read_timeout to be able to read it.
		# However real life says that on some OS we do ... So let the user control this value
		try:
			self.read_timeout = environment.settings().tcp.timeout
			self.defensive = environment.settings().debug.defensive
			self.logger = Logger()
		except RuntimeError:
			self.read_timeout = 1
			self.defensive = True
			self.logger = FakeLogger()

		self.afi = afi
		self.peer = peer
		self.local = local

		self._reading = None
		self._writing = None
		self._buffer = ''
		self.io = None
		self.established = False

		self.identifier += 1
		self.id = self.identifier

	def __init__ (self, neighbor, reactor):
		try:
			self.logger = Logger()
			# We only to try to connect via TCP once
			self.once = environment.settings().tcp.once
			self.bind = True if environment.settings().tcp.bind else False
		except RuntimeError:
			self.logger = FakeLogger()
			self.once = True

		self.reactor = reactor
		self.neighbor = neighbor
		# The next restart neighbor definition
		self._neighbor = None

		# The peer should restart after a stop
		self._restart = True
		# The peer was restarted (to know what kind of open to send for graceful restart)
		self._restarted = FORCE_GRACEFUL
		self._reset_skip()

		# We want to remove routes which are not in the configuration anymote afte a signal to reload
		self._reconfigure = True
		# We want to send all the known routes
		self._resend_routes = SEND.DONE
		# We have new routes for the peers
		self._have_routes = True

		# We have been asked to teardown the session with this code
		self._teardown = None

		# This skipping business should have its own class, like KA
		self._skip_time = None
		self._next_skip = 0

		self.recv_timer = None

		self._ = {'in':{},'out':{}}

		self._['in']['state'] = STATE.IDLE
		self._['out']['state'] = STATE.IDLE

		# value to reset 'generator' to
		self._['in']['enabled'] = False
		self._['out']['enabled'] = None if not self.neighbor.passive else False

		# the networking code
		self._['out']['proto'] = None
		self._['in']['proto'] = None

		# the networking code
		self._['out']['code'] = self._connect
		self._['in']['code'] = self._accept

		# the generator used by the main code
		# * False, the generator for this direction is down
		# * Generator, the code to run to connect or accept the connection
		# * None, the generator must be re-created
		self._['in']['generator'] = self._['in']['enabled']
		self._['out']['generator'] = self._['out']['enabled']

	def __init__ (self, neighbor, reactor):
		try:
			self.logger = Logger()
			# We only to try to connect via TCP once
			self.once = environment.settings().tcp.once
			self.bind = True if environment.settings().tcp.bind else False
		except RuntimeError:
			self.logger = FakeLogger()
			self.once = False
			self.bind = True

		self.reactor = reactor
		self.neighbor = neighbor
		# The next restart neighbor definition
		self._neighbor = None

		# The peer should restart after a stop
		self._restart = True
		# The peer was restarted (to know what kind of open to send for graceful restart)
		self._restarted = FORCE_GRACEFUL

		# We want to remove routes which are not in the configuration anymote afte a signal to reload
		self._reconfigure = True
		# We want to send all the known routes
		self._resend_routes = SEND.DONE
		# We have new routes for the peers
		self._have_routes = True

		# We have been asked to teardown the session with this code
		self._teardown = None

		self._delay = Delay()
		self.recv_timer = None

		self._incoming = Direction (
			'in',
			self._accept,
			FSM(FSM.IDLE),
			None,
			False,
			False
		)

		self._outgoing = Direction (
			'out',
			self._connect,
			FSM(FSM.IDLE),
			None,
			None if not self.neighbor.passive else False,
			None if not self.neighbor.passive else False
		)

		self._incoming.opposite = self._outgoing
		self._outgoing.opposite = self._incoming

class Connection (object):
	direction = 'undefined'
	identifier = 0

	def __init__ (self,afi,peer,local):
		# peer and local are strings of the IP

		# If the OS tells us we have data on the socket, we should never have to wait more than read_timeout to be able to read it.
		# However real life says that on some OS we do ... So let the user control this value
		try:
			self.read_timeout = environment.settings().tcp.timeout
			self.defensive = environment.settings().debug.defensive
			self.logger = Logger()
		except RuntimeError:
			self.read_timeout = 1
			self.defensive = True
			self.logger = FakeLogger()

		self.afi = afi
		self.peer = peer
		self.local = local

		self._reading = None
		self._writing = None
		self._buffer = ''
		self.io = None
		self.established = False

		self.identifier += 1
		self.id = self.identifier

	# Just in case ..
	def __del__ (self):
		if self.io:
			self.logger.network("%s connection to %s closed" % (self.name(),self.peer),'info')
			self.close()

	def name (self):
		return "session %d %s" % (self.id,self.direction)

	def close (self):
		try:
			self.logger.wire("%s, closing connection from %s to %s" % (self.name(),self.local,self.peer))
			if self.io:
				self.io.close()
				self.io = None
		except KeyboardInterrupt,e:
			raise e
		except:

	def __init__ (self,peer):
		try:
			self.logger = Logger()
		except RuntimeError:
			self.logger = FakeLogger()
		self.peer = peer
		self.neighbor = peer.neighbor
		self.negotiated = Negotiated(self.neighbor)
		self.connection = None
		port = os.environ.get('exabgp.tcp.port','')
		self.port = int(port) if port.isdigit() else 179

		# XXX: FIXME: check the the -19 is correct (but it is harmless)
		# The message size is the whole BGP message _without_ headers
		self.message_size = Message.MAX_LEN-Message.HEADER_LEN

	def __init__ (self, afi, peer, local):
		# peer and local are strings of the IP
		try:
			self.defensive = environment.settings().debug.defensive
			self.logger = Logger()
		except RuntimeError:
			self.defensive = True
			self.logger = FakeLogger()

		self.afi = afi
		self.peer = peer
		self.local = local

		self.io = None
		self.established = False

		self.id = self.identifier.get(self.direction,1)

	def __init__ (self, neighbor, reactor):
		try:
			self.logger = Logger()
			# We only to try to connect via TCP once
			self.once = environment.settings().tcp.once
			self.bind = True if environment.settings().tcp.bind else False
		except RuntimeError:
			self.logger = FakeLogger()
			self.once = False
			self.bind = True

		now = time.time()

		self.reactor = reactor
		self.neighbor = neighbor
		# The next restart neighbor definition
		self._neighbor = None

		self.proto = None
		self.fsm = FSM(self,FSM.IDLE)
		self.stats = {
			'fsm':      self.fsm,
			'creation': now,
			'reset': now,
			'complete': 0,
		}
		self.generator = None

		# The peer should restart after a stop
		self._restart = True
		# The peer was restarted (to know what kind of open to send for graceful restart)
		self._restarted = FORCE_GRACEFUL

		# We want to remove routes which are not in the configuration anymore after a signal to reload
		self._reconfigure = True
		# We want to send all the known routes
		self._resend_routes = SEND.DONE

		# We have been asked to teardown the session with this code
		self._teardown = None

		self._delay = Delay()
		self.recv_timer = None

class Connection (object):
	direction = 'undefined'
	identifier = 0

	def __init__ (self, afi, peer, local):
		# peer and local are strings of the IP

		try:
			self.defensive = environment.settings().debug.defensive
			self.logger = Logger()
		except RuntimeError:
			self.defensive = True
			self.logger = FakeLogger()

		self.afi = afi
		self.peer = peer
		self.local = local

		self._buffer = ''
		self.io = None
		self.established = False

		self.identifier += 1
		self.id = self.identifier

	# Just in case ..
	def __del__ (self):
		if self.io:
			self.logger.network("%s connection to %s closed" % (self.name(),self.peer),'info')
			self.close()

	def name (self):
		return "session %d %s" % (self.id,self.direction)

	def close (self):
		try:
			self.logger.wire("%s, closing connection from %s to %s" % (self.name(),self.local,self.peer))
			if self.io:
				self.io.close()
				self.io = None
		except KeyboardInterrupt,exc:
			raise exc
		except:

	def __init__ (self, peer):
		try:
			self.logger = Logger()
		except RuntimeError:
			self.logger = FakeLogger()
		self.peer = peer
		self.neighbor = peer.neighbor
		self.negotiated = Negotiated(self.neighbor)
		self.connection = None

		if self.neighbor.connect:
			self.port = self.neighbor.connect
		elif os.environ.get('exabgp.tcp.port','').isdigit():
			self.port = int(os.environ.get('exabgp.tcp.port'))
		elif os.environ.get('exabgp_tcp_port','').isdigit():
			self.port = int(os.environ.get('exabgp_tcp_port'))
		else:
			self.port = 179

		from exabgp.configuration.environment import environment
		self.log_routes = peer.neighbor.adj_rib_in or environment.settings().log.routes

class Protocol (object):
	decode = True

	def __init__ (self, peer):
		try:
			self.logger = Logger()
		except RuntimeError:
			self.logger = FakeLogger()
		self.peer = peer
		self.neighbor = peer.neighbor
		self.negotiated = Negotiated(self.neighbor)
		self.connection = None

		if self.neighbor.connect:
			self.port = self.neighbor.connect
		elif os.environ.get('exabgp.tcp.port','').isdigit():
			self.port = int(os.environ.get('exabgp.tcp.port'))
		elif os.environ.get('exabgp_tcp_port','').isdigit():
			self.port = int(os.environ.get('exabgp_tcp_port'))
		else:
			self.port = 179

		# XXX: FIXME: check the the -19 is correct (but it is harmless)
		# The message size is the whole BGP message _without_ headers
		self.message_size = Message.MAX_LEN-Message.HEADER_LEN

		from exabgp.configuration.environment import environment
		self.log_routes = peer.neighbor.adj_rib_in or environment.settings().log.routes

	# XXX: we use self.peer.neighbor.peer_address when we could use self.neighbor.peer_address

	def me (self, message):
		return "%s/%s %s" % (self.peer.neighbor.peer_address,self.peer.neighbor.peer_as,message)

	def accept (self, incoming):
		self.connection = incoming

		if self.peer.neighbor.api['neighbor-changes']:
			self.peer.reactor.processes.connected(self.peer.neighbor)

		# very important - as we use this function on __init__
		return self

	def connect (self):
		# allows to test the protocol code using modified StringIO with a extra 'pending' function
		if not self.connection:
			local = self.neighbor.md5_ip.top() if not self.neighbor.auto_discovery else None
			peer = self.neighbor.peer_address.top()
			afi = self.neighbor.peer_address.afi
			md5 = self.neighbor.md5_password
			md5_base64 = self.neighbor.md5_base64
			ttl_out = self.neighbor.ttl_out
			self.connection = Outgoing(afi,peer,local,self.port,md5,md5_base64,ttl_out)
			if not local and self.connection.init:
				self.neighbor.local_address = IP.create(self.connection.local)
				if self.neighbor.router_id is None and self.neighbor.local_address.afi == AFI.ipv4:
					self.neighbor.router_id = self.neighbor.local_address

			try:
				generator = self.connection.establish()
				while True:
					connected = six.next(generator)
					if not connected:
						yield False
						continue
					if self.peer.neighbor.api['neighbor-changes']:
						self.peer.reactor.processes.connected(self.peer.neighbor)
					yield True
					return
			except StopIteration:
				# close called by the caller
				# self.close('could not connect to remote end')
				yield False
				return

	def close (self, reason='protocol closed, reason unspecified'):
		if self.connection:
			self.logger.debug(reason,self.connection.session())

			# must be first otherwise we could have a loop caused by the raise in the below
			self.connection.close()
			self.connection = None

			self.peer.stats['down'] = self.peer.stats.get('down',0) + 1
			try:
				if self.peer.neighbor.api['neighbor-changes']:
					self.peer.reactor.processes.down(self.peer.neighbor,reason)
			except ProcessError:
				self.logger.debug('could not send notification of neighbor close to API',self.connection.session())

	def _to_api (self,direction,message,raw):
		packets = self.neighbor.api['%s-packets' % direction]
		parsed = self.neighbor.api['%s-parsed' % direction]
		consolidate = self.neighbor.api['%s-consolidate' % direction]
		negotiated = self.negotiated if self.neighbor.api['negotiated'] else None

		if consolidate:
			if packets:
				self.peer.reactor.processes.message(self.peer.neighbor,direction,message,negotiated,raw[:19],raw[19:])
			else:
#.........这里部分代码省略.........

class Protocol (object):
	decode = True

	def __init__ (self,peer):
		try:
			self.logger = Logger()
		except RuntimeError:
			self.logger = FakeLogger()
		self.peer = peer
		self.neighbor = peer.neighbor
		self.negotiated = Negotiated(self.neighbor)
		self.connection = None
		port = os.environ.get('exabgp.tcp.port','') or os.environ.get('exabgp_tcp_port','')
		self.port = int(port) if port.isdigit() else 179

		# XXX: FIXME: check the the -19 is correct (but it is harmless)
		# The message size is the whole BGP message _without_ headers
		self.message_size = Message.MAX_LEN-Message.HEADER_LEN

		from exabgp.configuration.environment import environment
		self.log_routes = environment.settings().log.routes

	# XXX: we use self.peer.neighbor.peer_address when we could use self.neighbor.peer_address

	def __del__ (self):
		self.close('automatic protocol cleanup')

	def me (self,message):
		return "Peer %15s ASN %-7s %s" % (self.peer.neighbor.peer_address,self.peer.neighbor.peer_as,message)

	def accept (self,incoming):
		self.connection = incoming

		if self.peer.neighbor.api['neighbor-changes']:
			self.peer.reactor.processes.connected(self.peer)

		# very important - as we use this function on __init__
		return self

	def connect (self):
		# allows to test the protocol code using modified StringIO with a extra 'pending' function
		if not self.connection:
			peer = self.neighbor.peer_address
			local = self.neighbor.local_address
			md5 = self.neighbor.md5
			ttl = self.neighbor.ttl
			self.connection = Outgoing(peer.afi,peer.ip,local.ip,self.port,md5,ttl)

			try:
				generator = self.connection.establish()
				while True:
					connected = generator.next()
					if not connected:
						yield False
						continue
					if self.peer.neighbor.api['neighbor-changes']:
						self.peer.reactor.processes.connected(self.peer)
					yield True
					return
			except StopIteration:
				# close called by the caller
				# self.close('could not connect to remote end')
				yield False
				return

	def close (self,reason='protocol closed, reason unspecified'):
		if self.connection:
			self.logger.network(self.me(reason))

			# must be first otherwise we could have a loop caused by the raise in the below
			self.connection.close()
			self.connection = None

			try:
				if self.peer.neighbor.api['neighbor-changes']:
					self.peer.reactor.processes.down(self.peer,reason)
			except ProcessError:
				self.logger.message(self.me('could not send notification of neighbor close to API'))


	def write (self,message):
		if self.neighbor.api['send-packets'] and not self.neighbor.api['consolidate']:
			self.peer.reactor.processes.send(self.peer,ord(message[18]),message[:19],message[19:])
		for boolean in self.connection.writer(message):
			yield boolean

	# Read from network .......................................................

	def read_message (self):
		for length,msg,header,body,notify in self.connection.reader():
			if notify:
				if self.neighbor.api['receive-packets']:
					self.peer.reactor.processes.receive(self.peer,msg,header,body)
				if self.neighbor.api[Message.ID.NOTIFICATION]:
					self.peer.reactor.processes.notification(self.peer,notify.code,notify.subcode,str(notify))
				# XXX: is notify not already Notify class ?
				raise Notify(notify.code,notify.subcode,str(notify))
			if not length:
				yield _NOP

#.........这里部分代码省略.........

class Protocol (object):
	decode = True

	def __init__ (self,peer):
		try:
			self.logger = Logger()
		except RuntimeError:
			self.logger = FakeLogger()
		self.peer = peer
		self.neighbor = peer.neighbor
		self.negotiated = Negotiated(self.neighbor)
		self.connection = None
		port = os.environ.get('exabgp.tcp.port','')
		self.port = int(port) if port.isdigit() else 179

		# XXX: FIXME: check the the -19 is correct (but it is harmless)
		# The message size is the whole BGP message _without_ headers
		self.message_size = Message.MAX_LEN-Message.HEADER_LEN

	# XXX: we use self.peer.neighbor.peer_address when we could use self.neighbor.peer_address

	def __del__ (self):
		self.close('automatic protocol cleanup')

	def me (self,message):
		return "Peer %15s ASN %-7s %s" % (self.peer.neighbor.peer_address,self.peer.neighbor.peer_as,message)

	def accept (self,incoming):
		self.connection = incoming

		if self.peer.neighbor.api.neighbor_changes:
			self.peer.reactor.processes.connected(self.peer.neighbor.peer_address)

		# very important - as we use this function on __init__
		return self

	def connect (self):
		# allows to test the protocol code using modified StringIO with a extra 'pending' function
		if not self.connection:
			peer = self.neighbor.peer_address
			local = self.neighbor.local_address
			md5 = self.neighbor.md5
			ttl = self.neighbor.ttl
			self.connection = Outgoing(peer.afi,peer.ip,local.ip,self.port,md5,ttl)

			connected = False
			try:
				generator = self.connection.establish()
				while True:
					connected = generator.next()
					if not connected:
						yield False
						continue
					if self.peer.neighbor.api.neighbor_changes:
						self.peer.reactor.processes.connected(self.peer.neighbor.peer_address)
					yield True
					return
			except StopIteration:
				# close called by the caller
				# self.close('could not connect to remote end')
				yield False
				return

	def close (self,reason='protocol closed, reason unspecified'):
		if self.connection:
			self.logger.network(self.me(reason))

			# must be first otherwise we could have a loop caused by the raise in the below
			self.connection.close()
			self.connection = None

			try:
				if self.peer.neighbor.api.neighbor_changes:
					self.peer.reactor.processes.down(self.peer.neighbor.peer_address,reason)
			except ProcessError:
				self.logger.message(self.me('could not send notification of neighbor close to API'))


	def write (self,message):
		if self.neighbor.api.send_packets:
			self.peer.reactor.processes.send(self.peer.neighbor.peer_address,ord(message[18]),message[:19],message[19:])
		for boolean in self.connection.writer(message):
			yield boolean

	# Read from network .......................................................

	def read_message (self,comment=''):
		try:
			for length,msg,header,body in self.connection.reader():
				if not length:
					yield _NOP
		except NotifyError,n:
			raise Notify(n.code,n.subcode,str(n))

		if self.neighbor.api.receive_packets:
			self.peer.reactor.processes.receive(self.peer.neighbor.peer_address,msg,header,body)

		if msg == Message.Type.UPDATE:
			self.logger.message(self.me('<< UPDATE'))

#.........这里部分代码省略.........

class Protocol (object):
	decode = True

	def __init__ (self, peer):
		try:
			self.logger = Logger()
		except RuntimeError:
			self.logger = FakeLogger()
		self.peer = peer
		self.neighbor = peer.neighbor
		self.negotiated = Negotiated(self.neighbor)
		self.connection = None

		if self.neighbor.connect:
			self.port = self.neighbor.connect
		elif os.environ.get('exabgp.tcp.port','').isdigit():
			self.port = int(os.environ.get('exabgp.tcp.port'))
		elif os.environ.get('exabgp_tcp_port','').isdigit():
			self.port = int(os.environ.get('exabgp_tcp_port'))
		else:
			self.port = 179

		# XXX: FIXME: check the the -19 is correct (but it is harmless)
		# The message size is the whole BGP message _without_ headers
		self.message_size = Message.MAX_LEN-Message.HEADER_LEN

		from exabgp.configuration.environment import environment
		self.log_routes = environment.settings().log.routes

	# XXX: we use self.peer.neighbor.peer_address when we could use self.neighbor.peer_address

	def __del__ (self):
		self.close('automatic protocol cleanup')

	def me (self, message):
		return "Peer %15s ASN %-7s %s" % (self.peer.neighbor.peer_address,self.peer.neighbor.peer_as,message)

	def accept (self, incoming):
		self.connection = incoming

		if self.peer.neighbor.api['neighbor-changes']:
			self.peer.reactor.processes.connected(self.peer.neighbor)

		# very important - as we use this function on __init__
		return self

	def connect (self):
		# allows to test the protocol code using modified StringIO with a extra 'pending' function
		if not self.connection:
			local = self.neighbor.md5_ip
			peer = self.neighbor.peer_address
			md5 = self.neighbor.md5_password
			ttl_out = self.neighbor.ttl_out
			self.connection = Outgoing(peer.afi,peer.top(),local.top(),self.port,md5,ttl_out)

			try:
				generator = self.connection.establish()
				while True:
					connected = generator.next()
					if not connected:
						yield False
						continue
					if self.peer.neighbor.api['neighbor-changes']:
						self.peer.reactor.processes.connected(self.peer.neighbor)
					yield True
					return
			except StopIteration:
				# close called by the caller
				# self.close('could not connect to remote end')
				yield False
				return

	def close (self, reason='protocol closed, reason unspecified'):
		if self.connection:
			self.logger.network(self.me(reason))

			# must be first otherwise we could have a loop caused by the raise in the below
			self.connection.close()
			self.connection = None

			try:
				if self.peer.neighbor.api['neighbor-changes']:
					self.peer.reactor.processes.down(self.peer.neighbor,reason)
			except ProcessError:
				self.logger.message(self.me('could not send notification of neighbor close to API'))

	def _to_api (self,direction,message,raw):
		packets = self.neighbor.api['%s-packets' % direction]
		parsed = self.neighbor.api['%s-parsed' % direction]
		consolidate = self.neighbor.api['%s-consolidate' % direction]

		if consolidate:
			if packets:
				self.peer.reactor.processes.message(self.peer.neighbor,direction,message,raw[:19],raw[19:])
			else:
				self.peer.reactor.processes.message(self.peer.neighbor,direction,message,'','')
		else:
			if packets:
				self.peer.reactor.processes.packets(self.peer.neighbor,direction,int(message.ID),raw[:19],raw[19:])
			if parsed:
#.........这里部分代码省略.........

class Peer (object):
	def __init__ (self, neighbor, reactor):
		try:
			self.logger = Logger()
			# We only to try to connect via TCP once
			self.once = environment.settings().tcp.once
			self.bind = True if environment.settings().tcp.bind else False
		except RuntimeError:
			self.logger = FakeLogger()
			self.once = False
			self.bind = True

		now = time.time()

		self.reactor = reactor
		self.neighbor = neighbor
		# The next restart neighbor definition
		self._neighbor = None

		self.proto = None
		self.fsm = FSM(self,FSM.IDLE)
		self.stats = {
			'fsm':      self.fsm,
			'creation': now,
			'reset': now,
			'complete': 0,
		}
		self.generator = None

		# The peer should restart after a stop
		self._restart = True
		# The peer was restarted (to know what kind of open to send for graceful restart)
		self._restarted = FORCE_GRACEFUL

		# We want to remove routes which are not in the configuration anymore after a signal to reload
		self._reconfigure = True
		# We want to send all the known routes
		self._resend_routes = SEND.DONE

		# We have been asked to teardown the session with this code
		self._teardown = None

		self._delay = Delay()
		self.recv_timer = None

	def id (self):
		return 'peer-%s' % self.neighbor.uid

	def _reset (self, message='',error=''):
		self.fsm.change(FSM.IDLE)
		self.stats = {
			'fsm':      self.fsm,
			'creation': self.stats['creation'],
			'reset':    time.time(),
			'complete': 0,
		}
		if self.proto:
			try:
				message = u"peer reset, message [{0}] error[{1}]".format(message, error)
			except UnicodeDecodeError as msg_err:
				message = u"peer reset, message [{0}] error[{1}]".format(message, msg_err)
			self.proto.close(message)
		self._delay.increase()

		self.proto = None

		if not self._restart or self.neighbor.generated:
			self.generator = False
			return

		self.generator = None
		self._teardown = None
		self.neighbor.rib.reset()

		# If we are restarting, and the neighbor definition is different, update the neighbor
		if self._neighbor:
			self.neighbor = self._neighbor
			self._neighbor = None

	def _stop (self, message):
		self.generator = None
		if self.proto:
			self.proto.close('stop, message [%s]' % message)
			self.proto = None

	# logging

	def me (self, message):
		return "peer %s ASN %-7s %s" % (self.neighbor.peer_address,self.neighbor.peer_as,message)

	# control

	def stop (self):
		self._teardown = 3
		self._restart = False
		self._restarted = False
		self._delay.reset()
		self.fsm.change(FSM.IDLE)
		self.stats = {
			'fsm':      self.fsm,
#.........这里部分代码省略.........