From: "Roy T. Fielding" <[EMAIL PROTECTED]>
Sent: Thursday, July 26, 2001 9:32 PM


> We might trip over this one at some point, so I figured it is worth
> placing in the archive.

Bill Stoddard's efforts have been in exactly the _opposite_ direction :-)
Our aim is to reuse the socket, rather than a fast-disconnect and close.

But worth noting, thank you for forwarding this, Roy!



----- Original Message ----- 
From: "Christian Huitema" <[EMAIL PROTECTED]>
To: "Christian Huitema" <[EMAIL PROTECTED]>; "Sally Floyd" 
<[EMAIL PROTECTED]>; "Tan Koan-Sin" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Thursday, July 26, 2001 2:40 PM
Subject: RE: [e2e] Windows NT implementation of TCP 


> Last Monday, I sent a message announcing that a specific bug was fixed
> in Windows 2000 since SP1, and I was wrong:
> 
> > > While it it true that Windows NT and Windows 2000 both implement
> > > Fast Retransmit, in many cases, due to a bug in the implementation,
> > > Fast Retransmit is never invoked, and the TCP sender has to wait
> > > for a Retransmit Timeout to retransmit a lost packet.  This is
> > > discussed in more detail in the TBIT paper by Padhye and Floyd,
> > > available from "http://www.aciri.org/tbit/";.
> > 
> > The bug occurred in Windows 2000, and has been fixed in the Service
> > Pack 1 issued in July 2000. The bug does not affect NT4 or XP, or any
> > version of W2K SP1 or greater.
> 
> It turns out that I had a "communication failure" with the developers in
> charge of correcting the said bug, which is not fixed in either W2K SP1
> or SP2. I am also told that it will be fixed shortly. 
> 
> To reproduce the bug (for those who care) you have to use a Microsoft
> specific socket command, "TransmitFile()" and you have to set the
> "TF_DISCONNECT" parameter to request an automatic disconnect at the end
> of the file transmission.
> 
> -- Christian Huitema 
> 


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