["Rajan S" <hydrae@xxxxxxxxxxx>]

> From: Guy Harris <gharris@xxxxxxxxx>
> To: Rajan S <hydrae@xxxxxxxxxxx>
> CC: ethereal-dev@xxxxxxxxxxxx
> Subject: Re: [Ethereal-dev] Plugins.c
> Date: Sat, 2 Mar 2002 11:47:50 -0800
>
> On Sat, Mar 02, 2002 at 10:55:36AM -0800, Rajan S wrote (in HTML; please
>     don't sent HTML-only mail to these lists):
> > I am trying to build ethereal 0.9.1 on WinNT platform.  I have
> > downloaded WinPCAP, GTK+, GLIB and ZLIB development packages.  I am
> > getting errors related to "DIR" and "dirent" while compiling.  Do I need
> > any other packages???
>
> No.
>
> There's probably something else going wrong.  I, and a number of other
> people, have compiled Ethereal from source, using Microsoft Visual C++
> 6.0 (and some have also used 5.0, I think), with no problem.  Without
> seeing the exact text of those errors, I cannot guess what the cause
> might be.


I am using VC++ 6.0. I am getting the following error messages:

plugins.c
plugins.c(149) : error C2065: 'DIR' : undeclared identifier
plugins.c(149) : error C2065: 'dir' : undeclared identifier
plugins.c(149) : warning C4552: '*' : operator has no effect; expected 
operator with side-effect


> > Also, I need to generate statistics for PPP (CRC Errors), IP, TCP
> > (Retransmissions) and UDP (Checksum) for a specific link (Once I
> > calculate the necessary checksums I will discard the packets).  Is there
> > a better way than Ethereal to generate just this.  Or can I extend
> > "ethereal" libraries to get this information.
>
> You could modify the Ethereal dissectors for PPP, IP, TCP, and UDP to
> calculate those statistics.  There's currently no mechanism in Ethereal
> to allow dissectors to register statistics so that other code in
> Ethereal (or Tethereal) can display them, however.
>
> Note, though, that, on Windows, you will not necessarily see PPP headers
> when you capture on a PPP device - in fact, you probably won't even be
> able to capture on PPP devices:
>
> 	http://netgroup-serv.polito.it/winpcap/misc/faq.htm
>
> "Q-4: Can I use WinPcap on a PPP connection?
>
> A: We have tested WinPcap on PPP connections under Windows 95, Windows
> 98 and Windows ME.  In Windows 95, due to a bug in NDIS, WinPcap
> sometimes resets the PPP connection.  In Windows 98/ME this bug appears
> to be corrected, and WinPcap seems to work properly.  Under Windows NT
> and Windows 2000 there are problems with the binding process, that
> prevents a protocol driver from working properly on the WAN adapter."

Thanks for the information. I think I have to device other ways to get the 
PPP packets.

Thanks..
--
SR



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