Re: bin/56129 (ftp(1) should keep control session during large xfer)

[RVP <rvp%SDF.ORG@localhost>]

The following reply was made to PR bin/56129; it has been noted by GNATS.

From: RVP <rvp%SDF.ORG@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: lukem%netbsd.org@localhost, dholland%NetBSD.org@localhost, tsutsui%ceres.dti.ne.jp@localhost
Subject: Re: bin/56129 (ftp(1) should keep control session during large
 xfer)
Date: Sat, 19 Jun 2021 21:01:37 +0000 (UTC)

   This message is in MIME format.  The first part should be readable text,
   while the remaining parts are likely unreadable without MIME-aware tools.
 
 --0-2040730550-1624136497=:20812
 Content-Type: text/plain; charset=US-ASCII; format=flowed
 
 On Sat, 19 Jun 2021, dholland%NetBSD.org@localhost wrote:
 
 > Synopsis: ftp(1) should keep control session during large xfer
 >
 > State-Changed-From-To: feedback->open
 > State-Changed-By: dholland%NetBSD.org@localhost
 > State-Changed-When: Sat, 19 Jun 2021 20:46:05 +0000
 > State-Changed-Why:
 > still borked
 >
 
 I can reproduce this by throttling "get" to 30KB:
 
 $ sudo tcpdump -w tcpdump-ftp.dump -i alc0 port 21
 $ ftp -T get,30000 -d ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-9.2/amd64/binary/sets/*.xz
 
 See attachment. Notice in the tcpdump log that for the 1st
 file, base.tar.xz, after the xfer completes, the server
 sends `226 Transfer complete.'. But, for the next file,
 comp.tar.xz, after xfer is finished, the server doesn't
 send *anything* at all--not even a FIN/ACK packet corresponding
 to the FIN sent by the client after it times out. The kernel
 has to send a RST to forcibly close the control connection.
 
 -RVP
 
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