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<p>If you're using UDP (also know as Unreliable Data Protocol) you can most definitely lose packets.</p>
<p>It's unlikely you are losing them on the sending side. Most likely lost in the wire due to collisions or the receiving side not clearing the queue fast enough.<br>
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<p>Try TCP packets instead which are much more reliable (though the TCP protocol is not guaranteed either due to connection resets and such).<br>
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<p>Michael D. Black<br>
Senior Scientist<br>
Analytics, Production and Services<br>
Northrop Grumman Information Systems<br>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" color="#000000" face="Calibri, sans-serif"><b>From:</b> winpcap-users-bounces@winpcap.org <winpcap-users-bounces@winpcap.org> on behalf of 范廷东 <fan.tingdong@gmail.com><br>
<b>Sent:</b> Sunday, September 7, 2014 6:59 AM<br>
<b>To:</b> winpcap-users<br>
<b>Subject:</b> EXT :[Winpcap-users] Confusion: How can we identify where the packet is lost?</font>
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<div>Dear all,</div>
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<div>I am writing a software program(with support from winpcap) which tests if a device could send packets continously to my laptop without loss of packets.
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<div>The sending part send packets with four bits for counter , and the receiving part check if there is incontinuity of the counts, as shown in the picture below. Winpcap driver was working in PACKET_MODE_CAPT mode(mode=PACKET_MODE_CAPT). The Receing part
found there were lost of packets when I was testing the software. </div>
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<div><img src="cid:3C384F9F@C69EC16A.A5480C54.bmp"></div>
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<div>Then I got a confusion: Where were the packets lost? The receiving part(my laptop) did not receive the packets successfully, or the sending part failed sending the packets?</div>
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<div>Hopefully anyone could provide any hits. Thank you all in advance.</div>
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<div>Best regards,</div>
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<div>Fan Tingdong</div>
<div>User and Fans of Winpcap</div>
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