Mail Archives: cygwin/2004/12/09/16:03:06
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 AT cygwin DOT com [mailto:cygwin-owner AT cygwin DOT com] On Behalf
Of Igor Pechtchanski
Sent: Thursday, December 09, 2004 10:42 AM
To: Waiss, Garrett
Cc: cygwin AT cygwin DOT 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 AT 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 AT 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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ZZZzz /,`.-'`' -. ;-;;,_ igor AT watson DOT ibm DOT com
|,4- ) )-,_. ,\ ( `'-' Igor Pechtchanski, Ph.D.
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