Kong - Connection Reset By peer Errors

[Sridhar Chellappa]

Folks

I have an issue where I see these messages continuously in kong's error logs

.............................

[info] 9748#0: *61537 recv() failed (104: Connection reset by peer) while sending to client, client: 1.2.3.4, server: kong, request: "POST /foo HTTP/1.1", upstream: "http://foo.com/fooapi"

..............................

I took a TCP dump of what's happenning and analyzed the dump

I can clearly see that Kong server is closing the connection after sending the response (FIN,ACK) for which the client responds with an RST,ACK

I have two questions

1. Is it valid for the Client (a HAP load balancer, in my case) to send an RST without sending a FIN
   
2. I have enabled Keepalives in the nginx.conf (so Kong server should not be closing connections)
   

http {

keepalive_timeout 60;

keepalive_requests 10000;

sendfile on;

tcp_nopush on;

tcp_nodelay on;

include 'nginx-kong.conf';

}

What is that I am doing wrong ?