Re: intermittent channel read problems

Thanks for the tips, I'll have to try that. I'm on OS X so I suppose
now is a good time to learn dtrace. sshd is also run a little
different on here than I'm used to, seems to be setup in some on-
demand fashion, sshd launches when connection is requested but there
is no parent sshd always running. I'll look into what I can do to try
to trace it, the logging spits out interesting info but also 'fixes'
the problem. There are some errors mentioned there but not sure if
they're expected or not.

--
Jeremy Knope / Software Developer / Ambrosia Software, Inc. -- http://www.AmbrosiaSW.com/
On Apr 14, 2009, at 4:12 PM, Peter Stuge wrote:
> Jeremy Knope wrote:
>> very so often a command I execute returns 0 bytes of data and a
>> status of 0, but then I can execute the command again and I might
>> get results on the 2nd try.
>
> Tricky.
>
> I would suggest to attach strace to the sshd process, and increase
> debugging as far as possible without making the error run and hide.
>
>
>> In my sample app, every time I execute a command, a channel via
>> libssh2_channel_open_session() is opened and command is executed
>> via libssh2_channel_exec().  I'm also running everything in
>> blocking mode.
>
> I think this should work just fine. But it would be nice to look at
> that strace output.
>
>
>> The only time it seems to work 100% reliably is if I turn logging
>> on my local sshd to DEBUG3.
>
> Hah! Lots of fun.
>
>
> //Peter
>
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