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Re: [ftpext] Discouraging use of TCP "urgent data"

Daniel Stenberg <daniel@haxx.se> Wed, 22 September 2010 17:41 UTC

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From: Daniel Stenberg <daniel@haxx.se>
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To: "William F. Maton" <wmaton@ottix.net>
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Cc: Alexey Melnikov <alexey.melnikov@isode.com>, ftpext@ietf.org
Subject: Re: [ftpext] Discouraging use of TCP "urgent data"
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On Wed, 22 Sep 2010, William F. Maton wrote:

>> Please note that Cisco Pix (and probably others) clear the URG bit by 
>> default.... so be prepared for the urgent indications to be unreliable...
>
> So just to think out loud, I'm wondering now if the FTP client should no 
> longer depend on ABOR actually working....

Why? Surely most commands already work fine without URG so why does ABOR 
depend so hard on it?

-- 

  / daniel.haxx.se

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