[Winpcap-users] Winpcap and Sockets

[Ian Basham]

Gianluca Varenni wrote:
>
> ----- Original Message ----- From: "Ian Basham" <ianb at proconex.com>
> To: <winpcap-users at winpcap.org>
> Sent: Thursday, March 29, 2007 12:26 PM
> Subject: Re: [Winpcap-users] Winpcap and Sockets
>
>
>> Gianluca,
>>
>> Thanks for your help.
>>
>> I took a while to respond because I had to install and figure out MS 
>> Visual Studio .NET 2003 (I assume that is what you meant by VC 
>> 2003).  I unzipped your files into "C:\Program 
>> Files\WpdPack\Examples-pcap\iflist", after renaming the existing 
>> iflist folder.  I got a clean compile right away.  BTW, I am using 
>> WinPcap 4.0.
>>
>> Unfortunately, I am still getting the exact same problem, that is the 
>> bind is failing.
>> A couple of questions for you please,
>>
>> 1) Am I using the right compiler, and
>
> Yes.
>
>> 2) did you use my sample 'Machine B' code as well?
>>
>
> No. From what you said the sample Machine B runs on another machine, 
> so it should not have anything to do with the problems you have on 
> machine A. Does sample Machine A run ok if sample B is not used at all?
>

Forgive me for not being clear.  Machine A does run OK if sample B is 
not used at all.  The problem only shows up when the program on Machine 
B is run for the second time.  Then, the program on Machine A fails on 
the call to bind (which would be the 2nd time bind gets called).  In 
other words, you need to run the 2nd program (the Machine B program) to 
see the problem.  In fact, you can run both programs on the same machine 
and it should fail.

Sincerely,

Ian Basham
> Have a nice day
> GV
>
>
>> Sincerely,
>>
>> Ian Basham
>>
>> Gianluca Varenni wrote:
>>> Ian,
>>>
>>> I briefly tried your application (machine A) on my machine, and it 
>>> worked without any problem. The call to bind didn't fail. Attached 
>>> you can find the Visual Studio project I used (i just modified one 
>>> of the samples of the WpdPack). I used VC 2003 to compile it.
>>>
>>> Can you please try the attached project and see if it works?
>>>
>>> GV
>>>
>>>
>>>
>>> ----- Original Message ----- From: "Ian Basham" <ianb at proconex.com>
>>> To: <winpcap-users at winpcap.org>
>>> Sent: Wednesday, March 21, 2007 7:28 AM
>>> Subject: [Winpcap-users] Winpcap and Sockets
>>>
>>>
>>>> Here are 2 programs that demonstrate a problem I am having.
>>>>
>>>> In a nutshell, normally the program on Machine B can be run over 
>>>> and over without any problems.  However, if the program on Machine 
>>>> A calls pcap_open and pcap_close, then the program on Machine B can 
>>>> never re-establish the socket, because the program on Machine A 
>>>> fails on the call to bind.
>>
>>>> snip...
>>
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>>>
>>>
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>>
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