class B(oscar.BOSConnection):
    capabilities = [oscar.CAP_CHAT]
    ...
    def connectionLost(self, reason):
        print reason
    ...

class OA(oscar.OscarAuthenticator):
    BOSClass = B

protocol.ClientCreator(reactor, OA, SN, PASS, icq=icqMode).connectTCP(*hostport)
reactor.run()

[Failure instance: Traceback (failure with no frames): <class 'twisted.internet.error.ConnectionLost'>: Connection to the other side was lost in a non-clean fashion.]

    def connectionLost(self, reason):
        print reason
        reactor.stop()

factory = protocol.ReconnectingClientFactory()
factory.protocol = lambda: oscar.OscarAuthenticator(SN, PASS, icq=icqMode)
reactor.connectTCP(host, port, factory)

def connectionLost(self, connector, reason):
         connector.connect()

#!/usr/bin/python
# -*- coding: windows-1251 -*-

from twisted.words.protocols import oscar
from twisted.internet import reactor, protocol

uin = "номер аськи"
passwort = "пароль"
hostport = ('login.icq.com', 5238)

class B(oscar.BOSConnection):
    capabilities = [oscar.CAP_CHAT]
    def initDone(self):
        self.requestSelfInfo().addCallback(self.gotSelfInfo)
        self.requestSSI().addCallback(self.gotBuddyList)
    def gotSelfInfo(self, user):
        print user.__dict__
        self.name = user.name
    def gotBuddyList(self, l):
        print l
        self.activateSSI()
        self.setProfile("TEST!")
        self.setIdleTime(0)
        self.clientReady()
        self.setAway()
    def receiveMessage(self, user, multiparts, flags):
        print "\n< From: ", user.name
        print "< Message: ", unicode(multiparts[0][0], 'utf-16_be').encode('cp1251')
        command = unicode(multiparts[0][0], 'utf-16_be').encode('cp1251').lower().split(' ')
        PREF = "!"
        if command[0] == (PREF+"comm"):
            self.sendMessage(user.name, 'Ты заюзал комманду !comm')
        else:
            self.sendMessage(user.name, 'Низнаю такой комманды, юзай комманду !comm')
    def connectionLost(self, reason):
        print reason

class OA(oscar.OscarAuthenticator):
    BOSClass = B

protocol.ClientCreator(reactor, OA, uin, passwort, icq=1).connectTCP(*hostport)
reactor.run()

from twisted.internet.protocol import Protocol, ReconnectingClientFactory
from sys import stdout

host = 'login.icq.com'
port = 5238

class Echo(Protocol):
    def dataReceived(self, data):
        stdout.write(data)

class EchoClientFactory(ReconnectingClientFactory):
    def startedConnecting(self, connector):
        print 'Started to connect.'

    def buildProtocol(self, addr):
        print 'Connected.'
        print 'Resetting reconnection delay'
        self.resetDelay()
        return Echo()

    def clientConnectionLost(self, connector, reason):
        print 'Lost connection.  Reason:', reason
        ReconnectingClientFactory.clientConnectionLost(self, connector, reason) # Здесь мы будем коннектиться (при потере соединения) до тех пор, пока не подключимся.

    def clientConnectionFailed(self, connector, reason):
        print 'Connection failed. Reason:', reason
        ReconnectingClientFactory.clientConnectionFailed(self, connector,
            reason)

from twisted.internet import reactor
reactor.connectTCP(host, port, EchoClientFactory())
reactor.run()