Hello guys

In my nginx version 1.3.14 I'm having lots of upstream timeouts like these and wonder what's the correct, professional approach is, to solve these:

example:

762#0: *113 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 58.28.152.233, server: videomail.io, request: "GET /socket.io/socket.io.v0.9.11.js HTTP/1.1", upstream: "https://127.0.0.1:4443/socket.io/socket.io.v0.9.11.js", host: "videomail.io"

relevant nginx config:

location / {
proxy_cache one;
try_files $uri @proxy;
}

location @proxy {
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-NginX-Proxy true;
proxy_set_header Host $http_host;

proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504 http_404;

proxy_pass https://127.0.0.1:4443;

proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_http_version 1.1;
}

what would you do in my case to examine this? imo the default timeout of 60 seconds is good and i do not want to increase it. it should be able to deliver socket.io.v0.9.11.js under 60 seconds, so i believe the problem is something else. i just do not know how to investigate this.

any hints very welcome!

cheers
michael