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From:	"Zhu, Binbin (Nokia - CN/Hangzhou)" <binbin DOT zhu AT nokia DOT com>
To:	"cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject:	RE: ssh ControlMaster re-broken
Date:	Mon, 23 Nov 2015 08:49:47 +0000
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Hi,
>> On Nov 19 11:45, Andrew Schulman wrote:
>> > > On Nov 17 12:46, Zhu, Binbin (Nokia - CN/Hangzhou) wrote:
>> > > > Hi,
>> > > > 
>> > > > It worked month ago, but it failed after reinstall.
>> > > 
>> > > Are you really sure it ever worked?  To the best of my knowledge the
>> > > control master stuff always required descriptor passing via AF_LOCAL
>> > > sockets, which is not available under Cygwin.
>> > > 
>> > > Corinna
>> > 
>> > Concur - it's never worked AFAIK.
>> 
>> I think it's not even the first time this came up on the list, right?
>
>https://cygwin.com/ml/cygwin/2015-01/msg00123.html

It really worked in 2.2.0. 
"
liawei AT xxx ~
$ ssh -nNf -o ControlMaster=yes -o ControlPath=/home/liawei/.ssh/ctl/%h liawei AT 10 DOT 133 DOT x DOT x
liawei AT 10 DOT 133 DOT x DOT x's password:


liawei AT xxx ~
$ ssh -nNf -o ControlMaster=yes -o ControlPath=/home/liawei/.ssh/ctl/%h liawei AT 10 DOT 133 DOT x DOT x
liawei AT 10 DOT 133 DOT x DOT x's password:

liawei AT xxx ~
$ ssh -o ControlPath=/home/liawei/.ssh/ctl/%h liawei AT 10 DOT 133 DOT x DOT x
process_mux_new_session: tcgetattr: Inappropriate ioctl for device
Last login: Mon Nov 23 10:30:41 2015 from 10.140.x.x
,...
$ [liawei AT esling001 ~]$ logout

Shared connection to 10.133.x.x closed.

liawei AT xxx ~
$ uname -a
CYGWIN_NT-6.1-WOW xxx 2.2.0(0.289/5/3) 2015-08-03 12:49 i686 Cygwin

liawei AT xxx ~
$"

Br, Bin
LTE C-PLANE

-----Original Message-----
From: Zhu, Binbin (Nokia - CN/Hangzhou) 
Sent: Wednesday, November 18, 2015 8:27 PM
To: 'cygwin AT cygwin DOT com' <cygwin AT cygwin DOT com>
Subject: RE: ssh ControlMaster re-broken

Hi,

Specifically, it worked in 
2.2.0(0.289/5/3) 2015-08-03 12:49 i686 Cygwin

But failed in 
2.2.0(0.289/5/3) 2015-08-03 12:49 i686 Cygwin

Both i686 and x86_64...

Br, Bin
LTE C-PLANE

-----Original Message-----
From: Zhu, Binbin (Nokia - CN/Hangzhou) 
Sent: Tuesday, November 17, 2015 8:46 PM
To: 'cygwin AT cygwin DOT com' <cygwin AT cygwin DOT com>
Subject: ssh ControlMaster re-broken

Hi,

It worked month ago, but it failed after reinstall.

1. Create shared session: ssh -vvv -nNf -o ControlMaster=yes -o ControlPath="$HOME/.ssh/ctl/%L-%r@%h:%p"  remote-host
Output in accepting new connection: 
$ debug1: multiplexing control connection
debug3: fd 5 is O_NONBLOCK
debug3: fd 5 is O_NONBLOCK
debug1: channel 1: new [mux-control]
debug3: channel_post_mux_listener: new mux channel 1 fd 5
debug3: mux_master_read_cb: channel 1: hello sent
debug3: mux_master_read_cb: channel 1 packet type 0x00000001 len 4
debug2: process_mux_master_hello: channel 1 slave version 4
debug3: mux_master_read_cb: channel 1 packet type 0x10000004 len 4
debug2: process_mux_alive_check: channel 1: alive check
debug3: mux_master_read_cb: channel 1 packet type 0x10000002 len 41
debug2: process_mux_new_session: channel 1: request tty 1, X 0, agent 0, subsys 0, term "xterm", cmd "", env 0
mm_receive_fd: no message header
process_mux_new_session: failed to receive fd 0 from slave

2. Client output:
$ ssh -vvv -o ControlPath="$HOME/.ssh/ctl/%L-%r@%h:%p" remote-host
OpenSSH_7.1p1, OpenSSL 1.0.2d 9 Jul 2015
debug2: fd 3 setting O_NONBLOCK
debug2: mux_client_hello_exchange: master version 4
debug3: mux_client_forwards: request forwardings: 0 local, 0 remote
debug3: mux_client_request_session: entering
debug3: mux_client_request_alive: entering
debug3: mux_client_request_alive: done pid = 10144
debug3: mux_client_request_session: session request sent
mux_client_request_session: read from master failed: Connection reset by peer
debug2: ssh_connect: needpriv 0

Could you help?

Br, Bin


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