ssh-sftp-perl-users

[Ssh-sftp-perl-users] Guru's advice is needed regarding SSH2.pm

[Alexander K. <ale...@gm...>]

Hi,

This question is not to users but to authors of Net:SSH:Perl module.

Could anybody tell me why we duplicate STDIN in _session_channel of
SSH2.pm please?

my $channel = $cmgr->new_channel(
ctype => 'session', local_window => 32*1024,
local_maxpacket => 16*1024, remote_name => 'client-session',
rfd => _dup('STDIN', '<'), wfd => _dup('STDOUT', '>'),
efd => _dup('STDERR', '>'));

It causes issues like "SFTP::do_stat returns error if <ENTER> key is
pressed" (sent 2006-11-29)

I can not find the answer by myself. So, I decided to ask here about
this. Maybe together we can find the fix of this annoying issue.

Thanks,

-- 
Alexander Kolotov

Re: [Ssh-sftp-perl-users] Guru's advice is needed regarding SSH2.pm

[David R. <dbr...@cp...>]

On Wednesday March 14, 2007 02:35, Alexander Kolotov wrote:
> This question is not to users but to authors of Net:SSH:Perl module.
> 
> Could anybody tell me why we duplicate STDIN in _session_channel of
> SSH2.pm please?

I'm the current maintainer, but I don't know why we do that - it was there when I took over the code.

Perhaps the better question is, what happens if we no longer do it?  Will it break anything important?

> my $channel = $cmgr->new_channel(
> ctype => 'session', local_window => 32*1024,
> local_maxpacket => 16*1024, remote_name => 'client-session',
> rfd => _dup('STDIN', '<'), wfd => _dup('STDOUT', '>'),
> efd => _dup('STDERR', '>'));
> 
> It causes issues like "SFTP::do_stat returns error if <ENTER> key is
> pressed" (sent 2006-11-29)
> 
> I can not find the answer by myself. So, I decided to ask here about
> this. Maybe together we can find the fix of this annoying issue.

-- 
Dave
Isa. 40:31

Re: [Ssh-sftp-perl-users] Guru's advice is needed regarding SSH2.pm

[Alexander K. <ale...@gm...>]

2007/3/15, David Robins <dbr...@cp...>:
> On Wednesday March 14, 2007 02:35, Alexander Kolotov wrote:
> > This question is not to users but to authors of Net:SSH:Perl module.
> >
> > Could anybody tell me why we duplicate STDIN in _session_channel of
> > SSH2.pm please?
>
> I'm the current maintainer, but I don't know why we do that - it was there when I took over the code.
>
> Perhaps the better question is, what happens if we no longer do it?  Will it break anything important?

The _session_channel method is used by several methods of SSH2.pm
module: cmd, shell, open2 in order to open client session channel. I
can not say that will happen if we do not duplicate STDIN for these
cases.
It is really difficult to understand this module without any
development documents and almost without comments.
Maybe you can perform some tests without duplicated STDIN. I can say
only that receiving of files through SFTP works fine in this case.

-- 
Alexander Kolotov