Wireshark mailing list archives

Re: How to stop extcap gracefully


From: Jirka Novak <j.novak () netsystem cz>
Date: Sat, 27 Nov 2021 22:51:46 +0100

Hi Roland,

Due to the nature of extcaps, they are not explicitly closed. Instead,
you should monitor the created pipes. Dumpcap closes those pipes when
the capture has finished. We do send them a kill signal, but due to the
nature of the signal handling, this signal may be missed.

The sure fire way is, if the pipe gets closed, end the extcap from the
extcap side.

can you point me to place where pipes are controlled on extcap side? I
see common framework there, but I'm not sure where the place is exactly...

Thank you in advance,

                                                        Jirka

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