[python-win32] Waiting for Wireless

[Roger Upole]

Tim Roberts wrote:
> As a self-proclaimed studly Win32 programmer, I'm embarrassed at not
> being able to find a neat solution to this.  I come to you humbly,
> seeking coolness.
> 
> I have a script on my laptop that runs after login and launches the
> tools that I use all the time, including the putty password agent, the
> Agent newsreader, and Firefox.  My wireless card takes about 15 seconds
> to sync up with my access point and get an IP address, by which time my
> script is done and the tools are running.  That means that Firefox
> always comes up complaining that it couldn't reach my home page.  So,
> I'd like to have my script wait for connectivity before launching the
> tools.  The question is, how can that be done?
> 
> I could use os.system to poll the "ipconfig" command, but that's icky
> and not at all studly.  I could loop on gethostaddr for localhost until
> it gets an IP, but even that's not studly, because there's no way to
> know that it's really the wireless adapter's IP address.
> 
> There must be a way for me to ask the musical question, "does the
> network adapter called 'Wireless Network Adapter' have an IP address?" 
> Does anybody know that tune?
> 

You can list network adapters and their IP addresses using WMI:

import win32com.client
wmi=win32com.client.GetObject('winmgmts:')
adapters=wmi.InstancesOf('Win32_NetworkAdapterConfiguration')
for adapter in adapters:
    print adapter.Properties_['Caption'], adapter.Properties_['IpAddress']

         Roger