Use different proxy ports, and log port conflicts. Hopefully works around

lib/cros_test_proxy.py

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import select
 import socket
 import SocketServer
 import threading
 
 class Filter(object):
@@ skipping 82 matching lines @@
       filter: An instance of a subclass of Filter.
       port_in: Port on which to listen for incoming connections.
       address_out: Address to which outgoing connections will go.
       address_port: Port to which outgoing connections will go.
     """
     self.port_in = port_in
     self.address_out = address_out
     self.port_out = port_out
     self.filter = filter
     
-    SocketServer.TCPServer.__init__(self,
-                                    ('', port_in),
-                                    self._Handler)
+    try:
+        SocketServer.TCPServer.__init__(self,
+                                        ('', port_in),
+                                        self._Handler)
+    except socket.error:
+      import os

[sosa, 2011/01/19 20:07:55]

please import os at the top

+      os.system("sudo netstat -l --tcp -n -p")

[sosa, 2011/01/19 20:07:55]

use '' rather than "" to be consistent.

+      raise
 
   def serve_forever_in_thread(self):
     """Helper method to start the server in a new background thread."""
     server_thread = threading.Thread(target=self.serve_forever)
     server_thread.setDaemon(True)
     server_thread.start()
     
     return server_thread