Hello!

On Fri, Jun 20, 2014 at 10:51:38AM +0200, Yifeng Wang wrote:

> Hi, It's my first time using NGINX to proxy other web servers. I set a
> variable in location, this variable may be gotten in cookie or args. if
> I use it directly likes "proxy_pass https://$nodeIp2;", it will get the
> response for a long time. but if I hardcode likes "proxy_pass
> https://147.128.22.152:8443" it works normally. Do I need to set more
> cofiguration parameters to solve this problem.Below is the segment of my
> windows https configuration.
>
> http {
> ...
> server {
> listen 443 ssl;
> server_name localhost;
>
> ssl_certificate server.crt;
> ssl_certificate_key server.key;
>
> location /pau6000lct/ {
> set $nodeIp 147.128.22.152:8443;
> proxy_pass https://$nodeIp;

Use of variables in the proxy_pass, in particular, implies that
SSL sessions will not be reused (as upstream address is not known
in advance, and there is no associated storage for an SSL
session). This means that each connection will have to do full
SSL handshake, and this is likely the reason for the performance
problems you see.

Solution is to use proxy_pass without variables, or use
preconfigured upstream{} blocks instead of ip addresses if you
have to use variables.

--
Maxim Dounin
http://nginx.org/

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