close() doesn't work because there is no associated process. Installing
CurrPorts won't work because I'm not on Windows. The approach of setting
tcp_max_orphans to zero doesn't succeed (and I assume that even if it would, it wouldn't kill the connection immediately). Running
tcpkill doesn't work because there is no active traffic. Running
killcx fails with
no response from child, operation may have failed. Google's tcp_killer fails with
Socket not found for connection. Setting short timeout and waiting it out is not an option because I must reuse the IP and port immediately.
Throughout all of this
netstat -tp persistently shows that the connection is alive:
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 156 localhost:54494 localhost:xmpp-client FIN_WAIT1 -
What is the way to immediately kill this TCP connection?