nGINX读取标头并将其传递到其他应用程序服务器

Question

I have an nGINX server running. I want to read custom HTTP Header from the incoming Request and redirect it to different application server. I did search for similar questions but found for writing custom headers but not how to read..

if a header is set with this -> "version = Version 1.0" then it should redirect different application (say uwsgi_pass xxxx:80)

if it is set as "version = Version 2.0" then it should redirect to (uwsgi_pass xxxx:99)

I tried in my nginx.conf file

server{
        listen 80;
        server_name xyz.com;

        if ($http_version ~ 'Version 1.0') {
            proxy_pass http://192.168.0.116:99/calc;
        }

        if ($http_version ~ 'Version 2.0') {
                proxy_pass http://192.168.0.116:99;
        }


    location /hello {
        proxy_pass http://192.168.0.116:99/calc;
            }

        }   

I'm getting error when I restart my nGINX

nginx: [emerg] "proxy_pass" directive is not allowed here in /etc/nginx/nginx.conf:19
nginx: configuration file /etc/nginx/nginx.conf test failed

Answer 1

Suppose you set a custom header in this form:

version: Version 1.0

Then you can configure nginx like in this way:

location / {
    if ($http_version ~ 'Version 1.0') {
        uwsgi_pass localhost:8888;
    }

    if ($http_version ~ 'Version 2.0') {
        uwsgi_pass localhost:9999;
    }
}

Reference: http://wiki.nginx.org/HttpCoreModule#.24http_HEADER