[python-win32] Get listening ports

[le dahut]

Hello,

I'm looking for an API that can do netstat calls to return a list of 
listenign ports and maybe a process attached to it.


Any idea ?


K.


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[python-win32] COM and threading

[June Kim]

Running the following code results in an attribute error:

Exception in thread Thread-1:
Traceback (most recent call last):
  File "C:\Python25\lib\threading.py", line 486, in __bootstrap_inner
self.run()
  File "testcom.py", line 10, in run
print self.ie.locationUrl
  File "C:\Python25\Lib\site-packages\win32com\client\dynamic.py", line 500, in
__getattr__
raise AttributeError, "%s.%s" % (self._username_, attr)
AttributeError: InternetExplorer.Application.locationUrl

It seems like the COM object isn't properly passed to the new thread.
Any roundabouts?


#testcom.py
from win32com.client import *
import pythoncom
import time, threading, sys


class Work(threading.Thread):
def run(self):
pythoncom.CoInitialize()
print self.ie.locationUrl
pythoncom.CoUninitialize()

ie=DispatchEx("InternetExplorer.Application")
ie.Navigate("http://www.google.com";)
while ie.Busy:
time.sleep(0.1)
print ie.locationUrl
w=Work()
w.ie=ie
w.start()
w.join()
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Re: [python-win32] COM and threading

[Tim Golden]

June Kim wrote:

Running the following code results in an attribute error:

Exception in thread Thread-1:
Traceback (most recent call last):
  File "C:\Python25\lib\threading.py", line 486, in __bootstrap_inner
self.run()
  File "testcom.py", line 10, in run
print self.ie.locationUrl
  File "C:\Python25\Lib\site-packages\win32com\client\dynamic.py", line 500, in
__getattr__
raise AttributeError, "%s.%s" % (self._username_, attr)
AttributeError: InternetExplorer.Application.locationUrl

It seems like the COM object isn't properly passed to the new thread.
Any roundabouts?


Welcome to the wonderful world of COM and threading. Basically,
the IWebBrowser2 object which is behind the InternetExplorer
control cannot be passed as such between threads. To pass it
between threads you need to marshal it and pass the resulting 
istream to the other thread which will then unmarshal it again.


There's some sample code below which does this, but you might
want to consider another approach, depending on what your app
is trying to do, such as creating an IE object per thread and/or
passing native Python objects between threads with Queues etc.

TJG


import os, sys
import threading
import time

import pythoncom
import win32com.client

class Work (threading.Thread):
 
 def __init__ (self, marshalled_ie):

   threading.Thread.__init__ (self)
   self.marshalled_ie = marshalled_ie
 
 def run (self):

   pythoncom.CoInitialize ()
   ie = win32com.client.Dispatch (
 pythoncom.CoGetInterfaceAndReleaseStream (
   self.marshalled_ie, 
   pythoncom.IID_IDispatch

 )
   )
   print "Threaded LocationURL:", ie.LocationURL
   pythoncom.CoUninitialize ()

ie = win32com.client.Dispatch ("InternetExplorer.Application")
ie.Visible = 1
ie.Navigate ("http://python.org";)
while ie.Busy: 
 time.sleep (1)

print "LocationURL:", ie.LocationURL

marshalled_ie = pythoncom.CoMarshalInterThreadInterfaceInStream (
 pythoncom.IID_IDispatch, ie
)
work = Work (marshalled_ie)
work.start ()
work.join ()

ie.Quit ()


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Re: [python-win32] Get listening ports

[Tim Golden]

le dahut wrote:

Hello,

I'm looking for an API that can do netstat calls to return a list of 
listenign ports and maybe a process attached to it.


You need the IP Helpers API

http://msdn.microsoft.com/en-us/library/ms886687.aspx

I'm afraid I've never used it, though, so you'll have
to scout around for examples.

TJG
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[python-win32] comtypes question: getactiveobject(ie.__clsid) says 'operation unavailsble'

[Aaron Colichia]

New to the pywin32 user list

I've read a couple of articles stating that IE doesn't register with the
ROT.  It was geared toward IE4, but I am not sure if I am running into this
or if I am not doing something right.  I question my syntax because I was
certain it worked once.  Both CreateObject and GetActiveObject take 'progid'
which can be a clsid, or the string representation of the application's
clsid eg. InternetExplorer.Application..

here is what i am trying on xp sp2 ie6-7

from comtypes.client import GetActiveObject, CreateObject

ie = CreateObject('InternetExplorer.Application')

ie.Visible

False

ie.Visible = True

ie.Navigate('http://google.com')
0

(Seems good at this point)

newIe = GetActiveObject('InternetExplorer.Application')

'exception in blah blah'

Windows Error: ( Operation Unavailable )


The same results if I use the seemingly good ie.__clsid

I've also tried passing ie._iid_ and str(ie.__clsid) and str(ie._iid_)

Is this all the same problem with IE not registering with ROT?

Thanks,

Aaron
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