Detect dropped connections
Johan Ribenfors
johan at dicam.org.uk
Wed Jul 21 23:33:31 WST 2010
Matt Johnston <matt <at> ucc.asn.au> writes:
>
> On Wed, Jul 21, 2010 at 01:47:10PM +0000, Johan Ribenfors wrote:
> > This compiled and ran fine - but didn't solve the problem. The server
> > (OpenSSH) would still drop the occasional connection and dropbear wouldn't
> > notice. I might be using it incorrectly, (I hope I am) but don't think so.
> > Just to make it difficult, when testing dropping the connection on the
server -
> > with -A or -I - dropbear _always_ notices.
>
> Have you set any ClientAliveInterval or TCPKeepAlive options
> on the server? I wonder if the server sometimes might not
> have noticed that the client connection has gone away so
> will keep the listening port in use, so even reconnecting
> won't help as it won't be able to bind to that port. I may
> be misunderstanding some of the problem though.
>
> Cheers,
> Matt
>
>
Matt,
They are both set:
KeepAlive yes
ClientAliveInterval 60
You have the problem backwards though - the server connection has gone away,
and the client hasn't noticed.
- Johan
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