6、FIN-WAIT-1
主动关闭的一方发送了 FIN 包，等待对端回复 ACK 时进入FIN-WAIT-1状态。
客户端:
node2:/root#netstat -na | grep 8080
tcp 0 1 192.168.137.3:56713 192.168.137.2:8080 FIN_WAIT1
模拟拒绝 服务端的192.168.137.2所有连接:
iptables -I INPUT -s 192.168.137.2 -j DROP
服务端:
node1:/root#netstat -na | grep 8080
tcp 0 0 192.168.137.2:8080 0.0.0.0:* LISTEN
tcp 1 1 192.168.137.2:8080 192.168.137.3:56713 LAST_ACK
20:15:33.041400 IP node2.56713 > node1.webcache: Flags [F.], seq 426512847, ack 2986175391, win 115, options [nop,nop,TS val 317504596 ecr 22237249], length 0
20:15:33.043300 IP node1.webcache > node2.56713: Flags [F.], seq 2986175391, ack 426512848, win 227, options [nop,nop,TS val 22297311 ecr 317504596], length 0
20:15:33.242050 IP node2.56713 > node1.webcache: Flags [F.], seq 426512847, ack 2986175391, win 115, options [nop,nop,TS val 317504797 ecr 22237249], length 0
20:15:33.242077 IP node1.webcache > node2.56713: Flags [.], ack 426512848, win 227, options [nop,nop,TS val 22297511 ecr 317504797,nop,nop,sack 1 {426512847:426512848}], length 0
20:15:33.243842 IP node1.webcache > node2.56713: Flags [F.], seq 2986175391, ack 426512848, win 227, options [nop,nop,TS val 22297513 ecr 317504797], length 0
20:15:33.644417 IP node2.56713 > node1.webcache: Flags [F.], seq 426512847, ack 2986175391, win 115, options [nop,nop,TS val 317505199 ecr 22237249], length 0
20:15:33.644440 IP node1.webcache > node2.56713: Flags [.], ack 426512848, win 227, options [nop,nop,TS val 22297913 ecr 317505199,nop,nop,sack 1 {426512847:426512848}], length 0
20:15:33.646208 IP node1.webcache > node2.56713: Flags [F.], seq 2986175391, ack 426512848, win 227, options [nop,nop,TS val 22297915 ecr 317505199], length 0
20:15:34.448287 IP node2.56713 > node1.webcache: Flags [F.], seq 426512847, ack 2986175391, win 115, options [nop,nop,TS val 317506003 ecr 22237249], length 0
20:15:34.448315 IP node1.webcache > node2.56713: Flags [.], ack 426512848, win 227, options [nop,nop,TS val 22298717 ecr 317506003,nop,nop,sack 1 {426512847:426512848}], length 0
20:15:34.451026 IP node1.webcache > node2.56713: Flags [F.], seq 2986175391, ack 426512848, win 227, options [nop,nop,TS val 22298720 ecr 317506003], length 0
20:15:36.080695 IP node2.56713 > node1.webcache: Flags [F.], seq 426512847, ack 2986175391, win 115, options [nop,nop,TS val 317507620 ecr 22237249], length 0
20:15:36.080711 IP node1.webcache > node2.56713: Flags [F.], seq 2986175391, ack 426512848, win 227, options [nop,nop,TS val 22300350 ecr 317506003], length 0
20:15:36.080758 IP node1.webcache > node2.56713: Flags [.], ack 426512848, win 227, options [nop,nop,TS val 22300350 ecr 317507620,nop,nop,sack 1 {426512847:426512848}], length 0
20:15:39.280813 IP node2.56713 > node1.webcache: Flags [F.], seq 426512847, ack 2986175391, win 115, options [nop,nop,TS val 317510836 ecr 22237249], length 0
20:15:39.280866 IP node1.webcache > node2.56713: Flags [.], ack 426512848, win 227, options [nop,nop,TS val 22303550 ecr 317510836,nop,nop,sack 1 {426512847:426512848}], length 0
20:15:39.296627 IP node1.webcache > node2.56713: Flags [F.], seq 2986175391, ack 426512848, win 227, options [nop,nop,TS val 22303566 ecr 317510836], length 0
20:15:45.712998 IP node2.56713 > node1.webcache: Flags [F.], seq 426512847, ack 2986175391, win 115, options [nop,nop,TS val 317517268 ecr 22237249], length 0
20:15:45.713018 IP node1.webcache > node2.56713: Flags [.], ack 426512848, win 227, options [nop,nop,TS val 22309982 ecr 317517268,nop,nop,sack 1 {426512847:426512848}], length 0
20:15:45.728983 IP node1.webcache > node2.56713: Flags [F.], seq 2986175391, ack 426512848, win 227, options [nop,nop,TS val 22309998 ecr 317517268], length 0
20:15:58.577267 IP node2.56713 > node1.webcache: Flags [F.], seq 426512847, ack 2986175391, win 115, options [nop,nop,TS val 317530132 ecr 22237249], length 0
20:15:58.577294 IP node1.webcache > node2.56713: Flags [.], ack 426512848, win 227, options [nop,nop,TS val 22322846 ecr 317530132,nop,nop,sack 1 {426512847:426512848}], length 0
20:15:58.593140 IP node1.webcache > node2.56713: Flags [F.], seq 2986175391, ack 426512848, win 227, options [nop,nop,TS val 22322862 ecr 317530132], length 0