search for: always_keepalive

Hi! There are configuration knobs (TCPKeepAlive) to enable/disable the use of TCP keepalives both in the ssh client and server. Unfortunately some UNIX systems default to SO_KEEPALIVE=on and some to =off. This may even be settable on a per host basis (OpenBSD default net.inet.tcp.always_keepalive=1 ???). For the TCPKeepAlive configuration knob I would like to propose changes along the lines showed in the attached patch (there is perhaps more elegant ways to do this). The patch will always set SO_KEEPALIVE according to the ssh configuration files regardless of the local UNIX TCP defaults....

I have a rather busy Apache 2.2 server; tons of small & some large requests. It's a standard Dell 2650 server using the bge (broadcom) network driver. I seem to have a rather strange problem where after just a day or so Apache just stops processing new connections. You can connect to port 80, but trying to get Apache to process any data just hangs. There is nothing strange in

...t.inet.tcp.syncookies: 1 net.inet.tcp.syncache.bucketlimit: 30 net.inet.tcp.syncache.cachelimit: 15359 net.inet.tcp.syncache.count: 0 net.inet.tcp.syncache.hashsize: 512 net.inet.tcp.syncache.rexmtlimit: 3 net.inet.tcp.msl: 30000 net.inet.tcp.rexmit_min: 3 net.inet.tcp.rexmit_slop: 200 net.inet.tcp.always_keepalive: 1 net.inet.udp.checksum: 1 net.inet.udp.maxdgram: 9216 net.inet.udp.recvspace: 42080 net.inet.udp.log_in_vain: 0 net.inet.udp.blackhole: 0 net.inet.udp.strict_mcast_mship: 0 net.inet.raw.maxdgram: 8192 net.inet.raw.recvspace: 8192 net.inet.accf.unloadable: 0 net.link.generic.system.ifcount: 3 net....