>     We are experiencing problems with unreceived db events.
> After some investigation found out that the connection to the event 
> (aux) port from the client to the server is lost and the client never 
> understands about that.
> Many routers and firewalls automatically close idle connections after a 
> certain period of time and we suspect this is the reason which makes 
> event connection to be lost sometimes.
> 
> Is there a way to detect the lost connection or better prevent it from 
> being closed.
> For the db connection we are successfully using DummyPacketInterval but 
> it does not affect the event connection.
> 
> The server is on Linux.
> /proc/sys/net/ipv4/tcp_keepalive_time is 7200
> /proc/sys/net/ipv4/tcp_keepalive_intvl is 75
> /proc/sys/net/ipv4/tcp_keepalive_probes is 9
> RemoteAuxPort  is set to permanent value.

    It is always a good idea to tell exact build number of both client and 
server.
And server architecture, of course.

Regards,
Vlad

PS keepalive for event's connection was turned on in year 2009 before v2.5 
release...


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