diff --git a/rdpy/protocol/rfb/rfb.py b/rdpy/protocol/rfb/rfb.py
index 7cf821f..bfad6c5 100644
--- a/rdpy/protocol/rfb/rfb.py
+++ b/rdpy/protocol/rfb/rfb.py
@@ -3,13 +3,9 @@
 '''
 from twisted.internet import protocol
 from rdpy.network.type import String, UInt8, UInt16Be, UInt32Be
-from rdpy.network.layer import RawLayer
+from rdpy.network.layer import RawLayer, LayerMode
 from message import *
 
-class ProtocolMode(object):
-    CLIENT = 0
-    SERVER = 1
-
 class Rfb(RawLayer):
     '''
     implements rfb protocol
@@ -18,15 +14,10 @@ class Rfb(RawLayer):
     def __init__(self, mode):
         '''
         constructor
-        mode can be only client or server mode
-        in this RDPY version only client mode is supported
-        @param mode: ProtocolMode.CLIENT | ProtocolMode.SERVER
         '''
-        RawLayer.__init__(self)
+        RawLayer.__init__(self, mode)
         #usefull for rfb protocol
         self._callbackBody = None
-        #mode of automata
-        self._mode = mode
         #protocol version negociated
         self._version = ProtocolVersion.RFB003008
         #nb security launch by server
@@ -91,7 +82,7 @@ class Rfb(RawLayer):
         in Client mode -> wait protocol version
         in Server mode -> send protocol version
         '''
-        if self._mode == ProtocolMode.CLIENT:
+        if self._mode == LayerMode.CLIENT:
             self.expect(12, self.recvProtocolVersion)
         else:
             self.send(self._version)
diff --git a/rdpy/rdpclient.py b/rdpy/rdpclient.py
index 7864d5a..29605ea 100644
--- a/rdpy/rdpclient.py
+++ b/rdpy/rdpclient.py
@@ -3,10 +3,14 @@ Created on 4 sept. 2013
 
 @author: sylvain
 '''
+
+import sys, os
+# Change path so we find rdpy
+sys.path.insert(1, os.path.join(sys.path[0], '..'))
+
 from rdpy.protocol.rdp import rdp
 from rdpy.network.layer import LayerMode
 
-
 if __name__ == '__main__':
     from twisted.internet import reactor
     #reactor.connectTCP("127.0.0.1", 5901, factory.RfbFactory(protocol))
diff --git a/rdpy/test/network/type.py b/rdpy/test/network/type.py
index d3fbf82..c640f9e 100644
--- a/rdpy/test/network/type.py
+++ b/rdpy/test/network/type.py
@@ -66,102 +66,18 @@ class TypeCase(unittest.TestCase):
         self.assertRaises(Exception, s.readType, TestType(conditional = lambda:False))
         
     
-    def test_sizeof_uint8_conditional_true(self):
+    def test_sizeof_conditional_true(self):
         '''
-        test if sizeof of UInt8 is 1 when type is conditional true
+        test if sizeof of simple type is init value(4) when type is conditional true
         '''
-        v = rdpy.network.type.UInt8(conditional = lambda:True)
-        self.assertEqual(rdpy.network.type.sizeof(v), 1, "invalid sizeof")
-        
-    def test_sizeof_uint8_conditional_false(self):
-        '''
-        test if sizeof of UInt8 is 1 when type is conditional false
-        '''
-        v = rdpy.network.type.UInt8(conditional = lambda:False)
-        self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
-        
-    def test_sizeof_uint16Le_conditional_true(self):
-        '''
-        test if sizeof of uint16Le is 1 when type is conditional true
-        '''
-        v = rdpy.network.type.UInt16Le(conditional = lambda:True)
-        self.assertEqual(rdpy.network.type.sizeof(v), 2, "invalid sizeof")
-        
-    def test_sizeof_uint16Le_conditional_false(self):
-        '''
-        test if sizeof of uint16Le is 1 when type is conditional false
-        '''
-        v = rdpy.network.type.UInt16Le(conditional = lambda:False)
-        self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
-        
-    def test_sizeof_uint16Be_conditional_true(self):
-        '''
-        test if sizeof of uint16Be is 1 when type is conditional true
-        '''
-        v = rdpy.network.type.UInt16Be(conditional = lambda:True)
-        self.assertEqual(rdpy.network.type.sizeof(v), 2, "invalid sizeof")
-        
-    def test_sizeof_uint16Be_conditional_false(self):
-        '''
-        test if sizeof of uint16Be is 1 when type is conditional false
-        '''
-        v = rdpy.network.type.UInt16Be(conditional = lambda:False)
-        self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
-        
-    def test_sizeof_uint24Le_conditional_true(self):
-        '''
-        test if sizeof of uint24Le is 1 when type is conditional true
-        '''
-        v = rdpy.network.type.UInt24Le(conditional = lambda:True)
-        self.assertEqual(rdpy.network.type.sizeof(v), 3, "invalid sizeof")
-        
-    def test_sizeof_uint24Le_conditional_false(self):
-        '''
-        test if sizeof of uint24Le is 1 when type is conditional false
-        '''
-        v = rdpy.network.type.UInt24Le(conditional = lambda:False)
-        self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
-        
-    def test_sizeof_uint24Be_conditional_true(self):
-        '''
-        test if sizeof of uint24Be is 1 when type is conditional true
-        '''
-        v = rdpy.network.type.UInt24Be(conditional = lambda:True)
-        self.assertEqual(rdpy.network.type.sizeof(v), 3, "invalid sizeof")
-        
-    def test_sizeof_uint24Be_conditional_false(self):
-        '''
-        test if sizeof of uint24Be is 1 when type is conditional false
-        '''
-        v = rdpy.network.type.UInt24Be(conditional = lambda:False)
-        self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
-        
-    def test_sizeof_uint32Le_conditional_true(self):
-        '''
-        test if sizeof of uint32Le is 1 when type is conditional true
-        '''
-        v = rdpy.network.type.UInt32Le(conditional = lambda:True)
+        v = rdpy.network.type.SimpleType("I", 4, False, 0, conditional = lambda:True)
         self.assertEqual(rdpy.network.type.sizeof(v), 4, "invalid sizeof")
         
-    def test_sizeof_uint32Le_conditional_false(self):
+    def test_sizeof_conditional_false(self):
         '''
-        test if sizeof of uint32Le is 1 when type is conditional false
+        test if sizeof of simple type is 0 when type is conditional false
         '''
-        v = rdpy.network.type.UInt32Le(conditional = lambda:False)
-        self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
-        
-    def test_sizeof_uint32Be_conditional_true(self):
-        '''
-        test if sizeof of uint32Be is 1 when type is conditional true
-        '''
-        v = rdpy.network.type.UInt32Be(conditional = lambda:True)
-        self.assertEqual(rdpy.network.type.sizeof(v), 4, "invalid sizeof")
-        
-    def test_sizeof_uint32Be_conditional_false(self):
-        '''
-        test if sizeof of uint32Be is 1 when type is conditional false
-        '''
-        v = rdpy.network.type.UInt32Be(conditional = lambda:False)
+        v = rdpy.network.type.SimpleType("I", 4, False, 0, conditional = lambda:False)
         self.assertEqual(rdpy.network.type.sizeof(v), 0, "invalid sizeof")
         
     def test_sizeof_list(self):
diff --git a/rdpy/vncclient.py b/rdpy/vncclient.py
index 34ec0f7..6a86d11 100644
--- a/rdpy/vncclient.py
+++ b/rdpy/vncclient.py
@@ -10,6 +10,7 @@ sys.path.insert(1, os.path.join(sys.path[0], '..'))
 from PyQt4 import QtGui
 from rdpy.display.qt import RfbAdaptor, QRemoteDesktop
 from rdpy.protocol.rfb import rfb
+from rdpy.network.layer import LayerMode
 
 if __name__ == '__main__':
     #create application
@@ -20,12 +21,12 @@ if __name__ == '__main__':
     qt4reactor.install()
     
     #create rfb protocol
-    factory = rfb.Factory(rfb.ProtocolMode.CLIENT)
+    factory = rfb.Factory(LayerMode.CLIENT)
     w = QRemoteDesktop(RfbAdaptor(factory._protocol))
     w.resize(1000, 700)
     w.setWindowTitle('vncclient')
     w.show()
     from twisted.internet import reactor
-    reactor.connectTCP("127.0.0.1", 5901, factory)
+    reactor.connectTCP("127.0.0.1", 5903, factory)
     reactor.run()
     sys.exit(app.exec_())
\ No newline at end of file