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<DIV><FONT face=Calibri>Packets can be dropped for a number of reasons,
including</FONT></DIV>
<DIV><FONT face=Calibri>- excessive CPU load on the machine</FONT></DIV>
<DIV><FONT face=Calibri>- cheap network cards and high traffic
rates</FONT></DIV>
<DIV><FONT face=Calibri>- WinPcap based applications not able to keep up with
the traffic rate.</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>What is the traffic rate we are talking
about?</FONT></DIV>
<DIV><FONT face=Calibri>Are you dumping the packets to disk in your
application?</FONT></DIV>
<DIV><FONT face=Calibri></FONT> </DIV>
<DIV><FONT face=Calibri>Have a nice day</FONT></DIV>
<DIV><FONT face=Calibri>GV</FONT></DIV>
<DIV style="FONT: 10pt Tahoma">
<DIV><BR></DIV>
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A title=amira@waves.com
href="mailto:amira@waves.com">Amir Aharon</A> </DIV>
<DIV><B>Sent:</B> Thursday, February 25, 2010 11:28 AM</DIV>
<DIV><B>To:</B> <A title=winpcap-users@winpcap.org
href="mailto:winpcap-users@winpcap.org">winpcap-users@winpcap.org</A> </DIV>
<DIV><B>Subject:</B> Re: [Winpcap-users] winpcap on vista.</DIV></DIV></DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">the phenomenon I see is that
while browsing local file system, my application misses packets that should have
been delivered, meaning per each command frame that is being send a response
will be return but <B>sometimes</B> response is being dropped. I don’t mean that
the application stopped to receive anymore packets from that point
.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">I have capture the traffic using
WireShark and verified the responses are not there also.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">it happens on 3 different vista
platform, we have one vista system that seems to works fine – we are searching
for the differences.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">this happens in WinPcap 4.0.2
and 4.1.1<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">thanks.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d">Amir.<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d"><o:p> </o:p></SPAN></P>
<DIV
style="BORDER-BOTTOM: medium none; BORDER-LEFT: blue 1.5pt solid; PADDING-BOTTOM: 0in; PADDING-LEFT: 4pt; PADDING-RIGHT: 0in; BORDER-TOP: medium none; BORDER-RIGHT: medium none; PADDING-TOP: 0in">
<DIV>
<DIV
style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<P class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">
winpcap-users-bounces@winpcap.org [mailto:winpcap-users-bounces@winpcap.org]
<B>On Behalf Of </B>Gianluca Varenni<BR><B>Sent:</B> Thursday, February 25, 2010
6:43 PM<BR><B>To:</B> winpcap-users@winpcap.org<BR><B>Subject:</B> Re:
[Winpcap-users] winpcap on vista.<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 12pt">There are no known issues about
it.</SPAN><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 12pt">Are you saying that you have a
Vista machine, you are sending ethernet frames thru winpcap, and when you browse
the local file system on that machine, your transmit application stops sending
packets or packets are not transmitted properly?</SPAN><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 12pt">Does it happen on one single
machine or on different machines (all running Vista)?</SPAN><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 12pt">Which version of WinPcap are
you using?</SPAN><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt"> <o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 12pt">Have a nice day</SPAN><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt"><o:p></o:p></SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 12pt">GV</SPAN><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt"><o:p></o:p></SPAN></P></DIV>
<DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt"><o:p> </o:p></SPAN></P></DIV>
<DIV>
<DIV>
<P style="BACKGROUND: whitesmoke" class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt"> <A
title=amira@waves.com href="mailto:amira@waves.com">Amir Aharon</A>
<o:p></o:p></SPAN></P></DIV>
<DIV>
<P style="BACKGROUND: whitesmoke" class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">Sent:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt"> Thursday, February
25, 2010 4:16 AM<o:p></o:p></SPAN></P></DIV>
<DIV>
<P style="BACKGROUND: whitesmoke" class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">To:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt"> <A
title=winpcap-users@winpcap.org
href="mailto:winpcap-users@winpcap.org">winpcap-users@winpcap.org</A>
<o:p></o:p></SPAN></P></DIV>
<DIV>
<P style="BACKGROUND: whitesmoke" class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt">Subject:</SPAN></B><SPAN
style="FONT-FAMILY: 'Tahoma','sans-serif'; FONT-SIZE: 10pt"> [Winpcap-users]
winpcap on vista.<o:p></o:p></SPAN></P></DIV></DIV></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt"><o:p> </o:p></SPAN></P></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Hi,<o:p></o:p></P>
<P class=MsoNormal>We uses WinPcap on windows(XP, vista & 7) for
transmitting raw Ethernet frames to control devices on a local closed
network.<o:p></o:p></P>
<P class=MsoNormal>However we have notice that RX raw Ethernet frames are being
dropped, on vista only, when we browse the <B><U>local file
system</U></B>.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Are there any known issues regarding this mysterious
phenomenon?<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>thanks, <o:p></o:p></P>
<P class=MsoNormal>Amir.<o:p></o:p></P>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'"> <o:p></o:p></SPAN></P>
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class=MsoNormal><SPAN style="FONT-FAMILY: 'Arial','sans-serif'"><IMG
id=Picture_x0020_1 border=0 alt="Waves Audio LTD"
src="cid:A3DD5D9513084A509B770B7A62CC64A3@NELSON3" width=73
height=125></SPAN><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; FONT-SIZE: 12pt"><o:p></o:p></SPAN></P></TD>
<TD
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class=MsoNormal><B><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 8.5pt">Amir
Aharon</SPAN></B><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black; FONT-SIZE: 8.5pt"><BR>SW
Team Leader <BR><BR><B>Waves Audio Ltd</B><BR>Tel: +972 3 608 4001
<BR>Mobile: +972 54 7641888<BR>Fax: +972 3 6084056<BR><A
href="http://www.waves.com" target=_blank><SPAN
style="COLOR: #ff9900; FONT-SIZE: 9pt">www.waves.com</SPAN></A> <A
href="http://www.maxx.com" target=_blank><SPAN
style="COLOR: #ff9900; FONT-SIZE: 9pt">www.maxx.com</SPAN></A> <A
href="http://www.sound.org" target=_blank><SPAN
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href="http://www.waveslive.com" target=_blank><SPAN
style="COLOR: #ff9900; FONT-SIZE: 9pt">www.waveslive.com</SPAN></A>
<o:p></o:p></SPAN></P></TD></TR>
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