[TCP] CLOSE_WAIT, FIN_WIAT_2 관련

4 way hand shake

4 way handshake.pdf

tcp fin timeout 확인

cat /proc/sys/net/ipv4/tcp_fin_timeout

참고

• http://hyeonstorage.tistory.com/287
• https://docs.oracle.com/cd/E29584_01/webhelp/PerfTuning/src/cperf_configuring_socket_timeout_on_linux.html