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Date: Mon, 10 Jan 2005 11:44:17 -0500 (EST)
From: Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: cygwin AT cygwin DOT com
Subject: Re: SSH client hang running uncompressed tar on various servers
In-Reply-To: <20050110132810.GA23702@cygbert.vinschen.de>
Message-ID: <Pine.GSO.4.61.0501101143160.5874@slinky.cs.nyu.edu>
References: <9e3862d80501100309715ff080 AT mail DOT gmail DOT com> <20050110124023 DOT GH7748 AT cygbert DOT vinschen DOT de> <9e3862d8050110050867b1598a AT mail DOT gmail DOT com> <20050110132810 DOT GA23702 AT cygbert DOT vinschen DOT de>
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On Mon, 10 Jan 2005, Corinna Vinschen wrote:

> On Jan 11 00:08, Brett Porter wrote:
> > What's weirder: it works when run from bash, but fails when forked
> > from Java (actually, via the program Ant). If I fork  "bash -c 'set'",
> > the environment seems normal, so I assume ssh is also getting the
> > normal environment. If I fork bash from java and run ssh, it still
> > fails. If I run ssh from cmd.exe, it succeeds.
>
> It could be a simple problem with stdio buffering or it could be the
> same problem which keeps native unison from working over ssh in 1.5.12.
> You could try to switch to unbuffered IO in java before forking ssh,
> just for testing.  Is the output from the server side necessary for
> your application to work?  If not, you could redirect output on the
> server side to /dev/null.

Also, redirect the *input* on the *client* side from /dev/null (using
either shell redirection, or the -n ssh flag).  This is a good idea
whenever you invoke non-interactive ssh from another program.
	Igor
-- 
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