diff --git a/src/common/xmpp/debug.py b/src/common/xmpp/debug.py
index 29321c1ff..60480b66c 100644
--- a/src/common/xmpp/debug.py
+++ b/src/common/xmpp/debug.py
@@ -154,7 +154,7 @@ class Debug:
                   # If you dont want to validate flags on each call to
                   # show(), set this to 0
                   #
-                  validate_flags = 1,
+                  validate_flags = 0,
                   #
                   # If you dont want the welcome message, set to 0
                   # default is to show welcome if any flags are active
diff --git a/src/common/xmpp/idlequeue.py b/src/common/xmpp/idlequeue.py
index 5ee73c987..955af1be1 100644
--- a/src/common/xmpp/idlequeue.py
+++ b/src/common/xmpp/idlequeue.py
@@ -53,6 +53,7 @@ class IdleQueue:
 		self.selector = select.poll()
 	
 	def remove_timeout(self, fd):
+		print 'read timeout removed for fd %s' % fd
 		if self.read_timeouts.has_key(fd):
 			del(self.read_timeouts[fd])
 	
@@ -68,6 +69,7 @@ class IdleQueue:
 	def set_read_timeout(self, fd, seconds):
 		''' set a new timeout, if it is not removed after 'seconds', 
 		then obj.read_timeout() will be called '''
+		print 'read timeout set for fd %s on %s seconds' % (fd, seconds)
 		timeout = self.current_time() + seconds
 		self.read_timeouts[fd] = timeout
 	
@@ -204,14 +206,14 @@ class SelectIdleQueue(IdleQueue):
 		except select.error, e:
 			waiting_descriptors = ((),(),())
 			if e[0] != 4: # interrupt
-				raise
-		for fd in waiting_descriptors[0]:
-			q = self.queue.get(fd)
-			if q:
+				raise
+		for fd in waiting_descriptors[0]:
+			q = self.queue.get(fd)
+			if q:
 				q.pollin()
 		for fd in waiting_descriptors[1]:
-			q = self.queue.get(fd)
-			if q:
+			q = self.queue.get(fd)
+			if q:
 				q.pollout()
 		for fd in waiting_descriptors[2]:
 			self.queue.get(fd).pollend()
diff --git a/src/common/xmpp/transports_nb.py b/src/common/xmpp/transports_nb.py
index 4c056c09d..a4f847764 100644
--- a/src/common/xmpp/transports_nb.py
+++ b/src/common/xmpp/transports_nb.py
@@ -337,7 +337,9 @@ class NonBlockingTcp(PlugIn, IdleObject):
 			self.on_connect_failure()
 
 	def _plug_idle(self):
+		# readable if socket is connected or disconnecting
 		readable = self.state != 0
+		# writeable if sth to send
 		if self.sendqueue or self.sendbuff:
 			writable = True
 		else:
@@ -346,6 +348,7 @@ class NonBlockingTcp(PlugIn, IdleObject):
 			self.idlequeue.plug_idle(self, writable, readable)
 	
 	def pollout(self):
+		print 'pollout called - send possible'
 		if self.state == 0:
 			self.connect_to_next_ip()
 			return
@@ -359,6 +362,7 @@ class NonBlockingTcp(PlugIn, IdleObject):
 		self._owner = None
 	
 	def pollin(self):
+		print 'pollin called - receive possible'
 		self._do_receive() 
 	
 	def pollend(self, retry=False):
@@ -583,11 +587,13 @@ class NonBlockingTcp(PlugIn, IdleObject):
 		errnum = 0
 
 		try:
+			print "==============sock.connect called"
 			self._sock.connect(self._server)
 			self._sock.setblocking(False)
 		except Exception, ee:
 			(errnum, errstr) = ee
 		# in progress, or would block
+		print "errnum: %s" % errnum
 		if errnum in (errno.EINPROGRESS, errno.EALREADY, errno.EWOULDBLOCK):
 			self.state = 1
 			return
diff --git a/src/common/xmpp/transports_new.py b/src/common/xmpp/transports_new.py
new file mode 100644
index 000000000..36992ba95
--- /dev/null
+++ b/src/common/xmpp/transports_new.py
@@ -0,0 +1,270 @@
+from idlequeue import IdleObject
+from client import PlugIn
+import threading, socket, errno
+
+import logging
+log = logging.getLogger('gajim.c.x.transports_nb')
+consoleloghandler = logging.StreamHandler()
+consoleloghandler.setLevel(logging.DEBUG)
+consoleloghandler.setFormatter(
+	logging.Formatter('%(levelname)s: %(message)s')
+)
+log.setLevel(logging.DEBUG)
+log.addHandler(consoleloghandler)
+log.propagate = False
+
+'''
+this module will replace transports_nb.py
+For now, it can be run from test/test_nonblockingtcp.py
+* set credentials in the testing script
+'''
+
+
+class NBgetaddrinfo(threading.Thread):
+	'''
+	Class for nonblocking call of getaddrinfo. Maybe unnecessary.
+	'''
+	def __init__(self, server,  on_success, on_failure, timeout_sec):
+		'''
+		Call is started from constructor. It is not needed to hold reference on
+		created instance.
+		:param server: tuple (hostname, port) for DNS request
+		:param on_success: callback for successful DNS request
+		:param on_failure: called when DNS request couldn't be performed
+		:param timeout_sec: max seconds to wait for return from getaddrinfo. After
+			this time, on_failure is called with error message.
+		'''
+		threading.Thread.__init__(self)
+		self.on_success = on_success
+		self.on_failure = on_failure
+		self.server = server
+		self.lock = threading.Lock()
+		self.already_called = False
+		self.timer = threading.Timer(timeout_sec, self.on_timeout)
+		self.timer.start()
+		self.start()
+	
+	def on_timeout(self):
+		'''
+		Called by timer. Means that getaddrinfo takes too long and will be
+		interrupted.
+		'''
+		self.do_call(False, 'NBgetaddrinfo timeout while looking up %s:%s' % self.server)
+
+	def do_call(self, success, data):
+		'''
+		Method called either on success and failure. In case of timeout it will be
+		called twice but only the first (failure) call will be performed.
+		:param success: True if getaddrinfo returned properly, False if there was an
+		error or on timeout.
+		:param data: error message if failure, list of address structures if success
+		'''
+		log.debug('NBgetaddrinfo::do_call(): %s' % repr(data))
+		self.timer.cancel()
+		self.lock.acquire()
+		if not self.already_called:
+			self.already_called = True
+			self.lock.release()
+			if success:
+				self.on_success(data)
+			else: 
+				self.on_failure(data)
+			return
+		else: 
+			self.lock.release()
+			return
+
+	def run(self):
+		try:
+			ips = socket.getaddrinfo(self.server[0],self.server[1],socket.AF_UNSPEC,
+				socket.SOCK_STREAM)
+		except socket.gaierror, e:
+			self.do_call(False, 'Lookup failure for %s: %s %s' % 
+				 (repr(self.server), e[0], e[1]))
+		except Exception, e: 
+			self.do_call(False, 'Exception while DNS lookup of %s: %s' %
+				(repr(e), repr(self.server)))
+		else:
+			self.do_call(True, ips)
+					
+
+
+DISCONNECTED ='DISCONNECTED' 	
+CONNECTING ='CONNECTING'  
+CONNECTED ='CONNECTED' 
+DISCONNECTING ='DISCONNECTING' 
+
+CONNECT_TIMEOUT_SECONDS = 5 
+'''timeout to connect to the server socket, it doesn't include auth'''
+
+DISCONNECT_TIMEOUT_SECONDS = 10
+'''how long to wait for a disconnect to complete'''
+
+class NonBlockingTcp(PlugIn, IdleObject):
+	def __init__(self, on_xmpp_connect=None, on_xmpp_failure=None):
+		'''
+		Class constructor. All parameters can be reset in tcp_connect or xmpp_connect
+		calls.
+
+		'''
+		PlugIn.__init__(self)
+		IdleObject.__init__(self)
+		self.on_tcp_connect = None
+		self.on_tcp_failure = None
+		self.sock = None
+		self.idlequeue = None
+		self.DBG_LINE='socket'
+		self.state = DISCONNECTED
+		'''
+		CONNECTING - after non-blocking socket.connect() until TCP connection is estabilished
+		CONNECTED - after TCP connection is estabilished
+		DISCONNECTING - 
+		DISCONNECTED
+		'''
+		self._exported_methods=[self.send, self.disconnect, self.onreceive, self.set_send_timeout, 
+			self.start_disconnect, self.set_timeout, self.remove_timeout]
+
+
+	def connect(self, conn_5tuple, on_tcp_connect, on_tcp_failure, idlequeue):
+		'''
+		Creates and connects socket to server and port defined in conn_5tupe which
+		should be list item returned from getaddrinfo.
+		:param conn_5tuple: 5-tuple returned from getaddrinfo
+		:param on_tcp_connect: callback called on successful tcp connection
+		:param on_tcp_failure: callback called on failure when estabilishing tcp 
+			connection
+		:param idlequeue: idlequeue for socket
+		'''
+		self.on_tcp_connect = on_tcp_connect
+		self.on_tcp_failure = on_tcp_failure
+		self.conn_5tuple = conn_5tuple
+		try:
+			self.sock = socket.socket(*conn_5tuple[:3])
+		except socket.error, (errnum, errstr):
+			on_tcp_failure('NonBlockingTcp: Error while creating socket: %s %s' % (errnum, errstr))
+			return
+
+		self.idlequeue = idlequeue
+		self.fd = self.sock.fileno()
+		self.idlequeue.plug_idle(self, True, False)
+
+		errnum = 0
+		''' variable for errno symbol that will be found from exception raised from connect() '''
+	
+		# set timeout for TCP connecting - if nonblocking connect() fails, pollend
+		# is called. If if succeeds pollout is called.
+		self.idlequeue.set_read_timeout(self.fd, CONNECT_TIMEOUT_SECONDS)
+
+		try: 
+			self.sock.setblocking(False)
+			self.sock.connect(conn_5tuple[4])
+		except Exception, (errnum, errstr):
+			pass
+
+		if errnum in (errno.EINPROGRESS, errno.EALREADY, errno.EWOULDBLOCK):
+			# connecting in progress
+			self.state = CONNECTING
+			log.debug('After nonblocking connect. "%s" raised => CONNECTING' % errstr)
+			# on_tcp_connect/failure will be called from self.pollin/self.pollout
+			return
+		elif errnum in (0, 10056, errno.EISCONN):
+			# already connected - this branch is very unlikely, nonblocking connect() will
+			# return EINPROGRESS exception in most cases. Anyway, we don't need timeout
+			# on connected descriptor
+			log.debug('After nonblocking connect. "%s" raised => CONNECTED' % errstr)
+			self._on_tcp_connect(self)
+			return
+
+		# if there was some other error, call failure callback and unplug transport
+		# which will also remove read_timeouts for descriptor
+		self._on_tcp_failure('Exception while connecting to %s: %s - %s' % 
+			(conn_5tuple[4], errnum, errstr))
+			
+	def _on_tcp_connect(self, data):
+		''' This method preceeds actual call of on_tcp_connect callback 
+		'''
+		self.state = CONNECTED
+		self.idlequeue.remove_timeout(self.fd)
+		self.on_tcp_connect(data)
+
+
+	def _on_tcp_failure(self,err_msg):
+		''' This method preceeds actual call of on_tcp_failure callback
+		'''
+		self.state = DISCONNECTED
+		self.idlequeue.unplug_idle(self.fd)
+		self.on_tcp_failure(err_msg)
+
+	def pollin(self):
+		'''called when receive on plugged socket is possible '''
+		log.debug('pollin called, state == %s' % self.state)
+
+	def pollout(self):
+		'''called when send to plugged socket is possible'''
+		log.debug('pollout called, state == %s' % self.state)
+
+		if self.state==CONNECTING:
+			self._on_tcp_connect(self)
+			return
+
+	def pollend(self):
+		'''called when remote site closed connection'''
+		log.debug('pollend called, state == %s' % self.state)
+		if self.state==CONNECTING:
+			self._on_tcp_failure('Error during connect to %s:%s' % self.conn_5tuple[4])
+
+	def read_timeout(self):
+		'''
+		Implemntation of IdleObject function called on timeouts from IdleQueue.
+		'''
+		log.debug('read_timeout called, state == %s' % self.state)
+		if self.state==CONNECTING:
+			# if read_timeout is called during connecting, connect() didn't end yet
+			# thus we have to close the socket
+			try:
+				self.sock.close()
+			except socket.error, (errnum, errmsg):
+				log.error('Error while closing socket on connection timeout: %s %s'
+					% (errnum, errmsg))
+			self._on_tcp_failure('Error during connect to %s:%s' % self.conn_5tuple[4])
+
+	
+
+	def disconnect(self, on_disconnect=None):
+		if self.state == DISCONNECTED:
+			return
+		self.idlequeue.unplug_idle(self.fd)
+		try:
+			self.sock.shutdown(socket.SHUT_RDWR)
+		except socket.error, (errnum, errstr):
+			log.error('Error while disconnecting: %s %s' % (errnum,errstr))
+		
+		try:
+			self.sock.close()
+		except socket.error, (errnum, errmsg):
+			log.error('Error closing socket: %s %s' % (errnum,errstr))
+		if on_disconnect:
+			on_disconnect()
+
+
+
+
+
+
+	def send(self, data, now=False):
+		pass
+
+	def onreceive(self):
+		pass
+
+	def set_send_timeout(self):
+		pass
+	
+	def set_timeout(self):
+		pass
+
+	def remove_timeout(self):
+		pass
+
+	def start_disconnect(self):
+		pass
diff --git a/test/test_client_nb.py b/test/test_client_nb.py
index 768c19096..3ddc75eef 100644
--- a/test/test_client_nb.py
+++ b/test/test_client_nb.py
@@ -1,13 +1,13 @@
-import unittest, threading
-from mock import Mock
+import unittest
+from xmpp_mocks import *
 
-import sys, time, os.path
+import sys, os.path
 
 gajim_root = os.path.join(os.path.abspath(os.path.dirname(__file__)), '..')
 
 sys.path.append(gajim_root + '/src/common/xmpp')
 
-import client_nb, idlequeue
+import client_nb
 
 '''
 Testing script for NonBlockingClient class (src/common/xmpp/client_nb.py)
@@ -15,10 +15,6 @@ It actually connects to a xmpp server so the connection values have to be
 changed before running.
 '''
 
-idlequeue_interval = 0.2
-'''
-IdleQueue polling interval. 200ms is used in Gajim as default
-'''
 
 xmpp_server_port = ('xmpp.example.org',5222)
 '''
@@ -26,111 +22,12 @@ xmpp_server_port = ('xmpp.example.org',5222)
 Script will connect to the machine.
 '''
 
-credentials = ['primus', 'l0v3', 'testclient']
+credentials = ['login', 'pass', 'testclient']
 '''
 [username, password, passphrase]
 Script will autheticate itself with this credentials on above mentioned server.
 '''
 
-
-class MockConnectionClass(Mock):
-	'''
-	Class simulating Connection class from src/common/connection.py
-
-	It is derived from Mock in order to avoid defining all methods
-	from real Connection that are called from NBClient or Dispatcher
-	( _event_dispatcher for example)
-	'''
-
-	def __init__(self, *args):
-		self.event = threading.Event()
-		'''
-		is used for waiting on connect, auth and disconnect callbacks
-		'''
-
-		self.event.clear()
-		Mock.__init__(self, *args)
-
-	def on_connect(self, *args):
-		'''
-		Method called on succesful connecting - after receiving <stream:features>
-		from server (NOT after TLS stream restart).
-		'''
-
-		#print 'on_connect - args:'
-		#for i in args:
-		#	print '    %s' % i
-		self.connect_failed = False
-		self.event.set()
-
-	def on_connect_failure(self, *args):
-		'''
-		Method called on failure while connecting - on everything from TCP error
-		to error during TLS handshake
-		'''
-
-		#print 'on_connect failure - args:'
-		#for i in args:
-		#	print '    %s' % i
-		self.connect_failed = True
-		self.event.set()
-	
-	def on_auth(self, con, auth):
-		'''
-		Method called after authentication is done regardless on the result.
-
-		:Parameters:
-			con : NonBlockingClient
-				reference to authenticated object
-			auth : string
-				type of authetication in case of success ('old_auth', 'sasl') or
-				None in case of auth failure
-		'''
-
-		#print 'on_auth - args:'
-		#print '    con: %s' % con
-		#print '    auth: %s' % auth
-		self.auth_connection = con
-		self.auth = auth
-		self.event.set()
-
-	def wait(self):
-		'''
-		Waiting until some callback sets the event and clearing the event subsequently. 
-		'''
-
-		self.event.wait()
-		self.event.clear()
-
-	
-
-
-class IdleQueueThread(threading.Thread):
-	'''
-	Thread for regular processing of idlequeue.
-	'''
-	def __init__(self):
-		self.iq = idlequeue.IdleQueue()
-		self.stop = threading.Event()
-		'''
-		Event used to stopping the thread main loop.
-		'''
-
-		self.stop.clear()
-		threading.Thread.__init__(self)
-	
-	def run(self):
-		while not self.stop.isSet():
-			self.iq.process()
-			time.sleep(idlequeue_interval)
-		self.iq.process()
-
-	def stop_thread(self):
-		self.stop.set()
-
-
-	
-
 class TestNonBlockingClient(unittest.TestCase):
 	'''
 	Test Cases class for NonBlockingClient. 
@@ -147,8 +44,8 @@ class TestNonBlockingClient(unittest.TestCase):
 		self.client = client_nb.NonBlockingClient(
 				server=xmpp_server_port[0],
 				port=xmpp_server_port[1],
-				on_connect=self.connection.on_connect,
-				on_connect_failure=self.connection.on_connect_failure,
+				on_connect=lambda *args: self.connection.on_connect(True, *args),
+				on_connect_failure=lambda *args: self.connection.on_connect(False, *args),
 				caller=self.connection 
 				)
 		'''
@@ -180,10 +77,10 @@ class TestNonBlockingClient(unittest.TestCase):
 		self.connection.wait()
 		
 		# if on_connect was called, client has to be connected and vice versa
-		if self.connection.connect_failed:
-			self.assert_(not self.client.isConnected())
-		else:
+		if self.connection.connect_succeeded:
 			self.assert_(self.client.isConnected())
+		else:
+			self.assert_(not self.client.isConnected())
 
 	def client_auth(self, username, password, resource, sasl):
 		'''
@@ -203,7 +100,7 @@ class TestNonBlockingClient(unittest.TestCase):
 		'''
 		Does disconnecting of connected client. Returns when TCP connection is closed.
 		'''
-		self.client.start_disconnect(None, on_disconnect=self.connection.event.set)
+		self.client.start_disconnect(None, on_disconnect=self.connection.set_event)
 
 		print 'waiting for disconnecting...'
 		self.connection.wait()
@@ -260,7 +157,7 @@ class TestNonBlockingClient(unittest.TestCase):
 		'''
 		self.open_stream(xmpp_server_port)
 		self.assert_(self.client.isConnected())
-		self.client_auth(credentials[0], "wrong pass", credentials[2], sasl=0)
+		self.client_auth(credentials[0], "wrong pass", credentials[2], sasl=1)
 		self.assert_(self.connection.auth is None)
 		self.do_disconnect()
 
@@ -271,7 +168,10 @@ class TestNonBlockingClient(unittest.TestCase):
 
 if __name__ == '__main__':
 
-	suite = unittest.TestLoader().loadTestsFromTestCase(TestNonBlockingClient)
+	#suite = unittest.TestLoader().loadTestsFromTestCase(TestNonBlockingClient)
+	suite = unittest.TestSuite()
+	suite.addTest(TestNonBlockingClient('test_proper_connect_sasl'))
+
 	unittest.TextTestRunner(verbosity=2).run(suite)
 
 
diff --git a/test/test_nonblockingtcp.py b/test/test_nonblockingtcp.py
new file mode 100644
index 000000000..cf6d31a2d
--- /dev/null
+++ b/test/test_nonblockingtcp.py
@@ -0,0 +1,119 @@
+'''
+Unit test for NonBlockingTcp tranport.
+'''
+
+import unittest
+from xmpp_mocks import *
+
+import threading, sys, os.path, time
+
+gajim_root = os.path.join(os.path.abspath(os.path.dirname(__file__)), '..')
+
+sys.path.append(gajim_root + '/src/common/xmpp')
+sys.path.append(gajim_root + '/src/common')
+
+import transports_new, debug
+from client import *
+
+xmpp_server = ('xmpp.example.org',5222)
+'''
+2-tuple  - (XMPP server hostname, c2s port)
+Script will connect to the machine.
+'''
+
+dns_timeout = 10
+'''
+timeout for DNS A-request (for getaddrinfo() call)
+'''
+
+class MockClient(IdleMock):
+	def __init__(self, server, port):
+		self.debug_flags=['all', 'nodebuilder']
+		self._DEBUG = debug.Debug(['socket'])
+		self.DEBUG = self._DEBUG.Show
+		self.server = server
+		self.port = port
+		IdleMock.__init__(self)
+		self.tcp_connected = False
+		self.ip_addresses = []
+		self.socket = None
+
+	def do_dns_request(self):
+		transports_new.NBgetaddrinfo(
+			server=(self.server, self.port),
+			on_success=lambda *args:self.on_success('DNSrequest', *args),
+			on_failure=self.on_failure,
+			timeout_sec=dns_timeout
+			)
+		self.wait()
+
+
+	def try_next_ip(self, err_message=None):
+		if err_message:
+			print err_message
+		if self.ip_addresses == []:
+			self.on_failure('Run out of hosts')
+			return
+		current_ip = self.ip_addresses.pop(0)
+		self.NonBlockingTcp.connect(
+				conn_5tuple=current_ip,
+				on_tcp_connect=lambda *args: self.on_success('TCPconnect',*args),
+				on_tcp_failure=self.try_next_ip,
+				idlequeue=self.idlequeue
+				)
+		self.wait()
+
+		
+	def set_idlequeue(self, idlequeue):
+		self.idlequeue=idlequeue
+
+	def on_failure(self, data):
+		print 'Error: %s' % data
+		self.set_event()
+
+	def on_success(self, mode, data):
+		if   mode == "DNSrequest":
+			self.ip_addresses = data
+		elif mode == "TCPconnect":
+			pass
+		self.set_event()
+
+
+
+	
+
+
+
+
+class TestNonBlockingTcp(unittest.TestCase):
+	def setUp(self):
+		self.nbtcp = transports_new.NonBlockingTcp()
+		self.client = MockClient(*xmpp_server)
+		self.idlequeue_thread = IdleQueueThread()
+		self.idlequeue_thread.start()
+		self.client.set_idlequeue(self.idlequeue_thread.iq)
+		self.nbtcp.PlugIn(self.client)
+
+	def tearDown(self):
+		self.idlequeue_thread.stop_thread()
+		self.idlequeue_thread.join()
+		
+
+	def testSth(self):
+		self.client.do_dns_request()
+		if self.client.ip_addresses == []:
+			print 'No IP found for given hostname: %s' % self.client.server
+			return
+		else:
+			self.client.try_next_ip()
+
+
+		
+		
+
+
+if __name__ == '__main__':
+
+	suite = unittest.TestLoader().loadTestsFromTestCase(TestNonBlockingTcp)
+	unittest.TextTestRunner(verbosity=2).run(suite)
+
diff --git a/test/xmpp_mocks.py b/test/xmpp_mocks.py
new file mode 100644
index 000000000..47d5b0c9f
--- /dev/null
+++ b/test/xmpp_mocks.py
@@ -0,0 +1,120 @@
+'''
+Module with dummy classes for unit testing of xmpp code (src/common/xmpp/*).
+'''
+
+import threading, time, os.path, sys
+
+from mock import Mock
+
+gajim_root = os.path.join(os.path.abspath(os.path.dirname(__file__)), '..')
+
+sys.path.append(gajim_root + '/src/common/xmpp')
+
+'''
+Module with classes usable for XMPP related testing.
+'''
+
+import idlequeue
+from client import PlugIn
+
+idlequeue_interval = 0.2
+'''
+IdleQueue polling interval. 200ms is used in Gajim as default
+'''
+
+
+class IdleQueueThread(threading.Thread):
+	'''
+	Thread for regular processing of idlequeue.
+	'''
+	def __init__(self):
+		self.iq = idlequeue.IdleQueue()
+		self.stop = threading.Event()
+		'''
+		Event used to stopping the thread main loop.
+		'''
+
+		self.stop.clear()
+		threading.Thread.__init__(self)
+	
+	def run(self):
+		while not self.stop.isSet():
+			self.iq.process()
+			time.sleep(idlequeue_interval)
+
+	def stop_thread(self):
+		self.stop.set()
+
+
+
+	
+class IdleMock:
+	'''
+	Serves as template for testing objects that are normally controlled by GUI.
+	Allows to wait for asynchronous callbacks with wait() method. 
+	'''
+	def __init__(self):
+		self.event = threading.Event()
+		'''
+		Event is used for waiting on callbacks.
+		'''
+		self.event.clear()
+
+
+	def wait(self):
+		'''
+		Waiting until some callback sets the event and clearing the event subsequently. 
+		'''
+		self.event.wait()
+		self.event.clear()
+
+	def set_event(self):
+		self.event.set()
+
+
+class MockConnectionClass(IdleMock,Mock):
+	'''
+	Class simulating Connection class from src/common/connection.py
+
+	It is derived from Mock in order to avoid defining all methods
+	from real Connection that are called from NBClient or Dispatcher
+	( _event_dispatcher for example)
+	'''
+
+	def __init__(self, *args):
+		self.connect_succeeded = True
+		IdleMock.__init__(self)
+		Mock.__init__(self, *args)
+
+	def on_connect(self, success, *args):
+		'''
+		Method called after connecting - after receiving <stream:features>
+		from server (NOT after TLS stream restart) or connect failure
+		'''
+
+		print 'on_connect - args:'
+		print '    success - %s' % success
+		for i in args:
+			print '    %s' % i
+		self.connect_succeeded = success
+		self.set_event()
+
+	def on_auth(self, con, auth):
+		'''
+		Method called after authentication is done regardless on the result.
+
+		:Parameters:
+			con : NonBlockingClient
+				reference to authenticated object
+			auth : string
+				type of authetication in case of success ('old_auth', 'sasl') or
+				None in case of auth failure
+		'''
+
+		#print 'on_auth - args:'
+		#print '    con: %s' % con
+		#print '    auth: %s' % auth
+		self.auth_connection = con
+		self.auth = auth
+		self.set_event()
+