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From: Kai.Grossjohann@CS.Uni-Dortmund.DE (Kai =?iso-8859-1?q?Gro=DFjohann?=)
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Subject: Re: Tunelling nnimap through ssh shell (Was: nnimap-authinfo-file question)
Date: 05 Jun 2001 23:51:27 +0200
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On 05 Jun 2001, Simon Josefsson wrote:

> Gnus should cope with destroyed network connections, it shouldn't
> include workarounds to make sure the network connection isn't
> destroyed.  In theory anyway.  Did this actually cause anything to
> fail?  If so, what?  Gnus should simply re-open the connection, I
> think.

Gnus can't know that the connection is destroyed, for here's what I
think is happening: Doug is tunneling his IMAP connection through
ssh.  ssh has connected to the remote host and established the
tunnel.  Now Gnus is opening a connection to the real IMAP server
through this tunnel.  Time passes.  The real IMAP server hits the idle
time out and closes the connection.  But the ssh tunnel is still
there.  Gnus doesn't know anything is wrong -- the ssh process is
still running.  Only when Gnus tries to send a command, ssh finds out
it can't and discovers the tunnel is closed.  But Gnus has already
sent the command and doesn't expect it to fail -- after all,
everything was alright just before sending the command.

I'm not sure this is it, but I think so.  Thoughts?

kai
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