Re: USB sniffer? (devel)

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On Fri, 26 Dec 2008, Pete Zaitcev wrote:

> On Fri, 26 Dec 2008 19:39:04 +0100, Phil Dibowitz <phil@xxxxxxxx> wrote:
> 
> > This is something I've run into problems with a few times. What's the reason
> > usbmon can't dumb *everything* (ala SnoopyPro in windows)?
> 
> What does specifically SnoopyPro show that usbmon doesn't?
> Surely it cannot show you NAK, IN, etc. The hardware does not tell us.
> If can pretend to show SOF, by enabling SOF interrupts and reading
> the frame counter, but even so it's a lie. Other than that we have
> approximately the same URBs that Windows have.

The text interface to usbmon doesn't show complete packets; it shows 
only the first 32 bytes or so.  The binary interface to usbmon doesn't 
have this limitation.

The binary interface can't be used directly from the command line, but
it is supported by wireshark.

Alan Stern

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