Wireshark-dev: Re: [Wireshark-dev] ring buffer

From: "Gianluca Varenni" <gianluca.varenni@xxxxxxxxxxxx>
Date: Tue, 6 May 2008 08:58:27 -0700

As you can see from the savedump source code, the code to dump packets is minimal. And the sample uses the standard parameters to the pcap functions. I think your application drops packets because it's somewhat slow at processing packets (if you are doing any processing). What are you doing after you receive a packet?

Have a nice day
GV

PS: I CCed the winpcap-users mailing list, as your question is more related to that mailing list rather than wireshark-dev

----- Original Message ----- From: "Maria de Fatima Requena" <MariaF.Requena@xxxxxx>

To: "Developer support list for Wireshark" <wireshark-dev@xxxxxxxxxxxxx>
Sent: Monday, May 05, 2008 11:38 PM
Subject: Re: [Wireshark-dev] ring buffer


Oh, thanks.

I have done two tests, and I think savedump doesnt miss any packets. What can be the problem then? Maybe parameters in pcap functions or buffering?

María de Fátima Requena Cabot (2488)
+34 91 787 23 00 alhambra-eidos.es



-----Mensaje original-----

De: wireshark-dev-bounces@xxxxxxxxxxxxx [mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] En nombre de Gianluca Varenni

Enviado el: lunes, 05 de mayo de 2008 18:17
Para: Developer support list for Wireshark
Asunto: Re: [Wireshark-dev] ring buffer

What do you mean by "quite unreadable"?

savedump creates a pcap-compatible file that can be opened with wireshark
(it's not a text file, it's pcap file i.e. binary).

Have a nice day
GV

----- Original Message ----- From: "Maria de Fatima Requena" <MariaF.Requena@xxxxxx>

To: "Developer support list for Wireshark" <wireshark-dev@xxxxxxxxxxxxx>
Sent: Sunday, May 04, 2008 11:34 PM
Subject: Re: [Wireshark-dev] ring buffer


I have tried it and the content of the capture file (which I have given the
name of 'dump.txt') is quite unreadable.


María de Fátima Requena Cabot (2488)
+34 91 787 23 00 alhambra-eidos.es


-----Mensaje original-----
De: wireshark-dev-bounces@xxxxxxxxxxxxx
[mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] En nombre de Gianluca Varenni
Enviado el: viernes, 02 de mayo de 2008 22:33
Para: Developer support list for Wireshark
Asunto: Re: [Wireshark-dev] ring buffer

Out of curiosity, does the sample in the WinPcap developer's pack named
wpdpack\Examples-pcap\savedump lose packets as well?

Have a nice day
GV

----- Original Message ----- From: "Maria de Fatima Requena" <MariaF.Requena@xxxxxx>

To: "Developer support list for Wireshark" <wireshark-dev@xxxxxxxxxxxxx>
Sent: Friday, May 02, 2008 4:39 AM
Subject: [Wireshark-dev] ring buffer


Hi

I am implementing a packet sniffer with VS. I posted some time ago problems
with losing packets, and someone here suggested me that it could be a
problem between disk access and NIC speed.

I have done some research, and it seems this doesn't happen to Wireshark
because of the use of a ring buffer. Can someone tell me which files (apart
from ringbuffer.c) are involved in Wireshark avoiding packet loss? Can I use
any configuration of Winpcap function parameters for losing less packets?

Thanks in advance


María de Fátima Requena Cabot (2488)
+34 91 787 23 00 alhambra-eidos.es


_______________________________________________
Wireshark-dev mailing list
Wireshark-dev@xxxxxxxxxxxxx
http://www.wireshark.org/mailman/listinfo/wireshark-dev

_______________________________________________
Wireshark-dev mailing list
Wireshark-dev@xxxxxxxxxxxxx
http://www.wireshark.org/mailman/listinfo/wireshark-dev
_______________________________________________
Wireshark-dev mailing list
Wireshark-dev@xxxxxxxxxxxxx
http://www.wireshark.org/mailman/listinfo/wireshark-dev

_______________________________________________
Wireshark-dev mailing list
Wireshark-dev@xxxxxxxxxxxxx
http://www.wireshark.org/mailman/listinfo/wireshark-dev
_______________________________________________
Wireshark-dev mailing list
Wireshark-dev@xxxxxxxxxxxxx

http://www.wireshark.org/mailman/listinfo/wireshark-dev