[Winpcap-users] While testing Gianlucas winpcap 3.1 [prerelease]...

[Marc Wetzel]

I won't call this a bugreport, because I tried out
Gianlucas private build as you could download it from 
(http://www.winpcap.org/gianluca/...)

But maybe you are interested in my findings...

#1:
First of all I'm mainly interested in sniffing on WAN devices, as they 
where previously
exported by the Devicename \Device\NPF_GenericNdisWanAdapter
Now the devicename changed to \Device\NPF_GenericDialupAdapter.

Ok this was the easy one...

But you might remember, that I had trouble using winpcap3.1.b4/WAN 
devices with Delphi,
because of some kind of COM initialization problems.
It only worked if I do a CoInitializeEx(NIL, COINIT_MULTITHREADED) at 
the very start of the code.

#2:
With the prerelease I have now other problems...
If I use CoInitializeEx(NIL, COINIT_MULTITHREADED) I only see my 
Ethernet-Device (using pcap_findalldevs).
And if I comment the CoInitializeEx call out, I see all devices as 
expected, but then it fails
in the call to  pcap_open() with the error message "The system cannot 
find the device" (just as before).


Just an addendum:
#3:
Using CoInitializeEx(NIL, COINIT_MULTITHREADED) in a Com-Application is 
not possible,
e.g. embedding the IE-ActiveX object will always fail. This means that 
having an application which uses
both the IE-ActiveX and winpcap (sniffing on WAN devices) is not possible.

Sniffing ethernet devices is not touched by this problem.

Maybe I am completely wrong?
Does anybody have a clue, or is this a bug?

Regards
/Marc