模拟半连接占满

半连接: 半连接队列（Incomplete connection queue），又称 SYN 队列 全连接队列（Completed connection queue），又称 Accept 队列 服务端 node1:/root/test#netstat -an | grep 8080 tcp 0 0 192.168.137.2:8080 0.0.0.0:* LISTEN tcp 0 0 192.168.137.2:8080 192.168.137.3:47848 SYN_RECV tcp 0 0 192.168.137.2:8080 192.168.137.3:47854 SYN_RECV tcp 0 0 192.168.137.2:8080 192.168.137.3:47851 SYN_RECV tcp 0 0 192.168.137.2:8080 192.168.137.3:47847 SYN_RECV tcp 0 0 192.168.137.2:8080 192.168.137.3:47856 SYN_RECV tcp 0 0 192.168.137.2:8080 192.168.137.3:47857 SYN_RECV tcp 0 0 192.168.137.2:8080 192.168.137.3:47859 SYN_RECV tcp 0 0 192.168.137.2:8080 192.168.137.3:47860 SYN_RECV t