NGINX responding to keep alive after FIN

asked 2019-08-02 10:20:29 +0000

updated 2019-08-02 12:31:01 +0000

I'm trying to understand the issue where NGINX is not responding. After successful connection between port 60000 (NGNIX) and port 51874 (client), NGNIX is sending FIN to client. Client responds with Ack. After that client sends keep alive, NGNIX responds with Ack. For the second keep alive, NGNIX responds with RST. I don't understand what's happening. Can someone please explain.

https://i.stack.imgur.com/jAS9O.jpg

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2019-08-02 14:13:35 +0000

Jaap

13742 ●711 ●115

nginx closed its end of the connection and wait for the client to do the same. It has enough of a timeout to wait 45 seconds for the first keep-alive, but then it times out before the second keep-alive after another 45 seconds, which ends up on a closed port, hence the reset. Thats the quick analysis of the screenshot.

edit flag offensive delete link

add a comment

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Question Tools

1 follower

Stats

Asked: 2019-08-02 10:20:29 +0000

Seen: 794 times

Last updated: Aug 02 '19

NGINX responding to keep alive after FIN edit

1 Answer