Proxy_pass with runtime variables?

Quan Zhou quanzhou822 at
Fri Apr 2 08:00:01 MSD 2010

Hi all,

I'm having issues with reverse proxy on Nginx

I was setting up a reverse proxy listening [::0]:80 acts as 6 to 4 server on
Nginx, so I've tried $host, $server_name, $http_host in proxy_pass field,
but they all failed, and server threw same error:

 [emerg]: invalid number of arguments in "proxy_pass" directive in

Here's my configuration file:

server {
        listen   [::0]:80;
        server_name  *.*;

        access_log  off;
        error_log off;

        location /{
                proxy_pass $server_name
                proxy_set_header Host $http_host;
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

                client_max_body_size 10m;
                client_body_buffer_size 128k;

                proxy_connect_timeout 90;
                proxy_send_timeout 90;
                proxy_read_timeout 90;

                proxy_buffer_size 4k;
                proxy_buffers 4 32k;
                proxy_busy_buffers_size 64k;
                proxy_temp_file_write_seze 64k;



I want to know is that possible to get every site to be reverse proxied on


Quan Zhou
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