After a few weeks of testing...

[xeron333]

Hello,
I tested your program for a packet reading function. The program itself works correctly. The problem I'm encountering is when, in the event
private static void device_OnPacketArrival(object sender, PacketCapture e)

we want to use the responses, for example, IP values, and compare these values with other values in an Excel spreadsheet, for example. This slows down the process, resulting in a delayed response, which prevents your process from being used in real time.

My question is: have you ever been notified of this problem? And if so, is there a solution to this problem?

[chmorgan]

Hi @xeron333, you'll want to marshal the packets over to another thread for processing. I believe there are a few examples that show a few approaches for doing so however I'm not sure if these are the most performant given the large number of .net changes since they were written.

[xeron333]

Hello and thank you for your reply. I looked at the "QueuingPacketsForBackgroundProcessing" example, which seems to me to be the closest to your comment "you'll want to marshal the packets over to another thread for processing," but I have a question: when is the variable triggered:

private static DateTime LastStatisticsOutput = DateTime.Now;

I can't see that.

[chmorgan]

It's assigned here and used to print out information periodically,

sharppcap/Examples/QueuingPacketsForBackgroundProcessing/Program.cs

Line 138 in 22b2622

LastStatisticsOutput = Now;

[xeron333]

Hello and thank you for your help.
So I was inspired by your example:

https://github.com/dotpcap/sharppcap/blob/master/Examples/QueuingPacketsForBackgroundProcessing/Program.cs

which indeed helped speed up the responses! However, I have a question: how do I make SharpPcap restart from scratch when I use it? Let me explain: when I launch SharpPcap, it displays packets that don't correspond to my browsing at time T, but rather to time T - a time delay; that is, it will send me packets that correspond to my past browsing.

I don't know if it has anything to do with this problem, but I tested your code:

var Now = DateTime.Now;
var interval = Now - LastStatisticsOutput;
if (interval > LastStatisticsInterval)

and I always get a lower time:

interval < LastStatisticsInterval`

Do you have an answer to this question?...

[kayoub5]

Different problem, please open new ticket, with code to reproduce and OS/ driver/ library versions