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Date: Tue, 9 Apr 2013 13:35:38 -0400
From: Christopher Faylor <cgf-use-the-mailinglist-please AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: 'ssh -1 -L < named_pipe' freezes
Message-ID: <20130409173538.GB1014@ednor.casa.cgf.cx>
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References: <471284393 DOT 20130409200429 AT gmail DOT com>
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User-Agent: Mutt/1.5.20 (2009-06-14)

On Tue, Apr 09, 2013 at 08:04:29PM +0400, Ilya Basin wrote:
>Here's my script that works on linux:
>
>    cmd="ssh -T -N -g -1 -L 10001:anotherhost:22"
>    fifo=`mktemp -u`
>    mkfifo "$fifo"
>    $cmd <"$fifo" &
>    exec 3>"$fifo"
>    # message: Pseudo-terminal will not be allocated because stdin is not a terminal.
>    # netstat shows that port 10001 is LISTENING
>    # from another terminal: ssh -p 10001 localhost
>    #printf '\0' >&3 # unfreeze on Cygwin
>    wait
>
>-N is ignored for protocol version 1, so as a workaround I redirect
>input from an eternal pipe.
>I want to save processes, so I'm using a named pipe instead of
>something like:
>    sleep | ssh
>
>On Cygwin when I try to use the forwarded port, the new client freezes
>until I write something to the pipe.
>
>This happens only with named pipes. Normal pipes work well.

Named pipes are not completely functional in Cygwin.  Sorry.

cgf

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