[Winpcap-users] Is it possible to use the wincap as the Tx/Rxdata path of my own TCP/IP protocol stack?

[simonmychen]

Thanks to guy's response!  I know the winpcap's main application is for 
network packet capture and analysis. Because I need to find the soultion 
that can verify my TCP/IP protocol stack in PC simulation,  I just wanna 
discuss the possibility of  my need by winpcap.  Does anyone have tried this 
method? If I set the different IP addresses to winsocks and my own TCP/IP 
protocol stack, does the network run correctly(two IP in one MAC address)?

Thanks!

----- Original Message ----- 
From: "Guy Harris" <guy at alum.mit.edu>
To: <winpcap-users at winpcap.org>
Sent: Wednesday, October 26, 2005 2:52 PM
Subject: Re: [Winpcap-users] Is it possible to use the wincap as the 
Tx/Rxdata path of my own TCP/IP protocol stack?


> simonmychen wrote:
>
>>     I am developing an network enable embedded device. I need to setup a 
>> simulation environment to test my TCP/IP protocol stack in windows.
>> 1. Can I use the winpcap as my network driver(winpcap can get/send the 
>> packet to ethernet chip) to connect with my TCP/IP protocol?
>
> Any IP packet sent to your machine will be processed by Windows' IP stack. 
> A copy will also be handed to WinPcap, but that does *NOT* mean that the 
> Windows IP stack will not also receive the packet.
>
> Libpcap/WinPcap is for
>
> 1) applications that passively sniff traffic (tcpdump/WinDump, Ethereal, 
> Analyzer, snoop, etc.)
>
> or
>
> 2) applications that are implementing protocols that the OS on which it's 
> running does *NOT* implement.
>
> It is *NOT* for replacing the OS's code to process a protocol; in 
> particular, the packet capture mechanisms it uses are *NOT* designed to 
> let you "take over" the processing of packets from the OS, so it's *NOT* 
> designed to let you do your own TCP/IP protocol stack.
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