[JDEV] Heartbeat patch for dialup and laptop users and faulty presence info

Tue May 28 23:18:28 CDT 2002

On Tue, May 28, 2002 at 08:40:53PM -0600, David Waite wrote:
> Some of the portal services above may have implicit pings via a tcp 
> keepalive message; I wouldn't consider it beyond them to alter the 
> underlying tcp stack to send faster keepalives and even to perform fewer 
> retransmissions.

Well actually it is a hint for bussy jabber servers, increase the TCP
Keepalive (and turn it on) at least NT and Linux allow this.

> uname -a
Linux calista 2.4.18-xfs #8 Wed May 1 10:30:33 CEST 2002 i686 unknown
> egrep . /proc/sys/net/ipv4/tcp_keepalive_*
/proc/sys/net/ipv4/tcp_keepalive_intvl:75
/proc/sys/net/ipv4/tcp_keepalive_probes:9
/proc/sys/net/ipv4/tcp_keepalive_time:7200

Greetings
Bernd