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RE: 1.5.12: ssh hangs with Windows XP SP2
- From: "Waiss, Garrett" <GWaiss at netsuite dot com>
- To: <cygwin at cygwin dot com>
- Date: Wed, 12 Jan 2005 10:27:38 -0800
- Subject: RE: 1.5.12: ssh hangs with Windows XP SP2
Hello all,
Has there been any traction regarding the pipe code issues and XP SP2?
I've keeping up with the posts, but have not seen any mention of a
possible work around or patch coming.
Thanks much,
Garrett
-----Original Message-----
From: cygwin-owner@cygwin.com [mailto:cygwin-owner@cygwin.com] On Behalf
Of Waiss, Garrett
Sent: Thursday, December 09, 2004 1:03 PM
To: cygwin@cygwin.com
Subject: RE: 1.5.12: ssh hangs with Windows XP SP2
Unfortunately, -n doesn't help. I actually looked in the archives under
"ssh hangs" and read the various messages. I am really hoping that there
will a resolution for the pipe issue. Thanks for the response.
Garrett
-----Original Message-----
From: cygwin-owner@cygwin.com [mailto:cygwin-owner@cygwin.com] On Behalf
Of Igor Pechtchanski
Sent: Thursday, December 09, 2004 10:42 AM
To: Waiss, Garrett
Cc: cygwin@cygwin.com
Subject: Re: 1.5.12: ssh hangs with Windows XP SP2
On Wed, 8 Dec 2004, Waiss, Garrett wrote:
> Cygwin version: 1.5.12
> OS: Windows XP SP2
>
> Before applying the SP2, ssh was working fine. Now ssh will hang with
> this specfic case.
>
> This works:
> sh -c "ssh -i c:/keys/id_foo foo@bong 'ls -l /opt/'"
>
> However, putting this into a java class for instance will cause this
> to
> hang:
>
> <code>
> import java.io.*;
>
> public class test {
> public static void main(String[] args) {
> try {
> final String cmd = "/bin/ssh -p 22 -i c:/keys/id_foo foo@bong
'ls -l /opt'";
> final Process p = Runtime.getRuntime().exec(new String[] {
> "sh", "-c", cmd
> });
> final InputStreamReader isr = new
InputStreamReader(p.getInputStream());
> final BufferedReader br = new BufferedReader(isr);
> String line;
> final StringBuffer sb = new StringBuffer(0);
> while((line = br.readLine()) != null) {
> sb.append(line);
> sb.append('\n');
> }
> System.out.println(sb.toString());
> }
> catch (Exception e) {
> System.out.println(e.getMessage());
> }
> }
> }
> </code>
>
> Is there a solution to this problem?
It's usually recommended to invoke remote commands that don't require
input with the "-n" ssh flag, which will close stdin -- try that. If it
doesn't help, this could be the problem with the new pipe code that's
been mentioned on this list -- search the web archives for "ssh hangs".
HTH,
Igor
--
http://cs.nyu.edu/~pechtcha/
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