Wireshark-users: Re: [Wireshark-users] position acquisition
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From: Stephen Fisher <steve@xxxxxxxxxxxxxxxxxx>
Date: Fri, 30 Oct 2009 13:23:57 -0600

On Oct 30, 2009, at 4:42 AM, Michel NoSpam wrote:


I would to know a which level Wireshark samples the IP packets.
I use a mobile phone as a modem (DUN). A flow control permits to adjust the data flow from the PC to the modem. 

We have a downlink and a uplink data flow.
Because of this flow control, we can see that the downlink TCP data are not acknowledge immediately. 
I would like to know where wireshark samples the data?
When the data leave the ipstack or when the data leave the PC?

(stack ip -> USB -> modem)
On Windows (which it sounds like you're running), Wireshark uses the WinPcap library to do the actual capturing. You can find more information on WinPcap at their web site, http://www.winpcap.org, including links to mailing lists where they may be able to provide more details for you. 


Steve