Wireshark · Ethereal-dev: Re: [Ethereal-dev] Bug in compressed sniffer file decode

[Guy Harris <guy@xxxxxxxxxxxx>]

On Tuesday, September 2, 2003, at 4:03 PM, Greg Morris wrote:

> When attempting to decode a NAI Sniffer file CAZ. The initial 
> dissection works. But if you filter down the trace and then reset the 
> filter then the file is no longer dissected. The original trace 
> included around 18000 packets. I stripped it down to as low as 250 
> packets and was able to duplicate the problem. If I get the file below 
> 250 packets I can no longer get the problem to occur.

I've checked in a change to check all calls to "wtap_seek_read()" in 
"file.c" to see whether they failed, and to pop up an alert box if the 
call failed; if you read in Snif6.caz, go to the last frame, and then 
go to the first frame, it now pops up an alert box with the error being 
"Uncompression error: data error".

That's an error coming back from zlib.