Hi Agoston, > On 8 Dec 2017, at 13:43, Horváth Ágoston János via db-wg <db-wg@ripe.net> > wrote: > > Or you could use TCP's built-in keepalive feature: > > http://tldp.org/HOWTO/TCP-Keepalive-HOWTO/overview.html >
Yes, this is already possible, you can set the SO_KEEPALIVE option on the socket. However, at least on CentOS7 (Linux), the default is to wait 2 hours before sending a keepalive probe, then 9 probes have to fail (each 75s apart) before declaring the connection is broken. Changing this default behaviour is applied system-wide. Adding a protocol-specific keepalive mechanism may still be useful. Regards Ed
