[Ssh-sftp-perl-users] How to detect a "closed" connection ?

[hugues <Hug...@af...>]

Hi David,

I just sent this request to the 'ssh-sftp-perl-users' mailing list
four days ago, but did not see it appear, so i'm resending it
to you directly with the mailing-list in copy.

Please forgive me if that's fealing rude to you.

Here is the description of my problem:

Using Net::SFTP/Net::SSH::Perl, i'm having trouble finding the right
way to test if a connection is still really 'connected'.

I'm working on an application than handles delivery to remote sites
with "long-life connection handles" through which it send data via
the Net::SFTP module.

The application keeps the connection handles open and sends data when
there is some available.

The problem is that the remote server may close its end of the
connection, and i need a way to detect that so i can re-establish
connection when that happens.

What i'm actually trying to do if  the following:

- try the operation (e.g 'put file') when i need to send data
- if the operation fails, then check connection state, and reconnect
  if the check tells me that the connection is closed/broken.

I first thought i could use the Net::SSH::Perl::sock(), but that does
not seems to work, as it still returns me a valid socket object even
when the connection has been broken.

I tried to invoke the fileno() method on the returned socket, but that 
also works (returns me a valid file number instead of 'undef').

Any help would be greatly appreciated.

PS: I can provide more details if needed.
BTW, i'm also interested in a solution to that same problem with Net::SSH2
that i'm also trying to use (but i'm having some other problems with it, 
that i'll perhaps describe in another message if i cannot solve them by
myself).

-- 
Hugues Lafarge                    || Email: Hug...@af...
Agence France Presse              || Phone: +33 1 40 41 77 15
4 rue de la bourse, 75002 Paris   ||   Fax: +33 1 40 41 79 24
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