[stunnel-users] MySQL replication with stunnel, connection closed after some time

[Michal Trojnara]

Marcel Kirsch wrote:
> it is correct that there is a router (with NAT) between the slave server
> and the internet. I tried the solution of Mike (socket =
> l:SO_KEEPALIVE=1...), but it didn't work.
> I googled SO_KEEPALIVE and discovered that it only sends a keep alive
> packet every 2 hours by default. Unfortunately the connection is closed
> after a shorter time (about 30 minutes). Do you know how it is possible
> to set the keep alive time to a shorter value?

On Linux you can use:

echo 300 > /proc/sys/net/ipv4/tcp_keepalive_time

Best regards,
Mike