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From: Nathan Ridge <zeratul976 AT hotmail DOT com>
To: Cygwin Mailing List <cygwin AT cygwin DOT com>
Subject: RE: windows-to-windows openssh buffering issue
Date: Sun, 19 Jun 2011 08:36:37 +0000
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On Sat, 18 Jun 2011 23:31:12, Larry Hall wrote
 
> On 6/18/2011 5:25 AM, Nathan Ridge wrote:
> 
>> On Fri, 17 Jun 2011 11:52:35, Larry Hall wrote:
>>
>>> On 6/16/2011 10:20 PM, Nathan Ridge wrote:
>>>
>>>> Is there some setting for OpenSSH on the server side that would allow
>>>> me to run the program on machine B in native-windows non-pty mode
>>>> so that the buffering is fine? If not, what else can I do?
>>>
>>> No. OpenSSH uses ptys - it doesn't matter what terminal or console you're
>>> using. I don't know of a way to make OpenSSH behave the way you want it to
>>> with Windows console programs.
>>
>> Is this issue particular to OpenSSH, or is ssh-ing into to a windows machine
>> a lost cause in general?
>>
> Since non-Cygwin executables don't understand ptys, they think they are
> dealing with a pipe and so they buffer their output.  It's not specific
> to OpenSSH.  You'd see the same issue running these programs under xterm
> or mintty.  I personally wouldn't define anything about this particular
> issue as a "lost cause" but YMMV.  Quite some time ago there was an attempt
> to smooth out this issue with a utility call ttyfier but it had it's issues
> and has pretty much disappeared.  I don't know of any other aids out there,
> though that doesn't mean there isn't something .  The only things I can
> suggest are that you make sure there's not some Cygwin utility that does what
> you want or that you write something that does.
 
What I meant was, is it possible to write a different SSH server implementation
for windows - perhaps a native one - that doesn't suffer from this problem?
(And if so, do you know of one?) Or would all attempts at an SSH server
implementation run into this issue?
 
Thanks,
Nate. 		 	   		  

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