[cifs-protocol] [REG: 110120160951867] Requesting clarification of CIFS client timeout behavior

Edgar Olougouna edgaro at microsoft.com
Wed Dec 8 12:45:21 MST 2010

The pcap format of the capture is fine. I am able to open this in Netmon. I will update you as soon I have news.


-----Original Message-----
From: Jeff Layton [mailto:jlayton at poochiereds.net] On Behalf Of Jeff Layton
Sent: Wednesday, December 08, 2010 6:01 AM
To: Edgar Olougouna
Cc: Christopher R. Hertel; pfif at tridgell.net; cifs-protocol at samba.org; MSSolve Case Email
Subject: Re: [cifs-protocol] [REG: 110120160951867] Requesting clarification of CIFS client timeout behavior

On Tue, 7 Dec 2010 21:33:56 +0000
Edgar Olougouna <edgaro at microsoft.com> wrote:

> Jeff,
> Could you provide some network captures so I can further investigate the behavior you described?
> Thanks,
> Edgar


The capture is in libpcap format (hope that's OK). If not, then let me know and I can convert it to another.

The setup is a win2k8 host talking to my crippled smbd that doesn't respond to WriteAndX requests. Basically I just mapped the share to a drive letter, and then used "copy" from the command line on the win2k8 host to try to copy a file to the share. I believe the win2k8 host is fully patched (at least as of a week or two ago).

As you can see, the client consistently disconnects the share after getting no response from the write, even though echoes do get a response. Also note that on the first copy attempt, the share was disconnected without the client sending any echoes.

Jeff Layton <jlayton at samba.org>

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