Messages in this thread |  | | Date | Sat, 23 Dec 2000 21:31:56 -0200 | Subject | TCP keepalive seems to send to only one port | From | Cesar Eduardo Barros <> |
| |
I've been doing some experiments with the keepalive code in 2.4.0-test10 here (I want to avoid the 2.2.x NAT I'm using (for which I don't have root) from timing out my connections). To test it, I reduced both tcp_keepalive_time and tcp_keepalive_intvl to 1. Using ethereal, I saw that the keepalives were sent as expected, but only for one of the two idle TCP connections I had to a given host (I was testing with two remote hosts, each with two idle TCP connections, one in port 5500 and the other in port 5501). I only saw activity on 5500, yet netstat told me both were still active.
This means that keepalive is useless for keeping alive more than one connection to a given host.
-- Cesar Eduardo Barros cesarb@nitnet.com.br cesarb@dcc.ufrj.br - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
|  |