Wireshark · Wireshark-dev: Re: [Wireshark-dev] 90GB pcap file get last frame time stamp

[Richard Sharpe <realrichardsharpe@xxxxxxxxx>]

On Fri, Feb 26, 2021 at 9:10 AM Raj sekar <mrajsekar@xxxxxxxxx> wrote:
>
> Hi Everyone!
>
> Need a help. Is there any library or method to get large pcap file's( offline ) last timestamp.
>
> I know capinfos can get this. But i want faster than capinfos.
>
> Any suggestion?

Because each captured frame can be a different length, normally you
would have to skip all the preceding frames to get the timestamp of
the last record.

However, a heuristic approach might be to read the header to get the
capture-length, and then read that much from the end of the file and
look for an appropriate record header ...

On the other hand, I am unaware of any code that does that.

-- 
Regards,
Richard Sharpe
(何以解憂？唯有杜康。--曹操)(传说杜康是酒的发明者)