location capture X-Forwarded-For

1.4.3.6

hamish@Hamish-MBP ~/edge> curl -v -s -H'X-Forwarded-For: 123.123.123.123' -H'X-Test: foobar' localhost/test/foo
> GET /test/foo HTTP/1.1
> User-Agent: curl/7.30.0
> Host: localhost
> Accept: */*
> X-Forwarded-For: 123.123.123.123
> X-Test: foobar
>
< HTTP/1.1 200 OK
< Server: ngx_openresty/1.4.3.6
< Date: Tue, 23 Sep 2014 13:54:49 GMT
< Content-Type: application/octet-stream
< Transfer-Encoding: chunked
< Connection: keep-alive
<
host: test
x-forwarded-for: 123.123.123.123
x-proxy-test: 123.123.123.123
x-test: foobar
accept: */*
user-agent: curl/7.30.0
connection: close

1.5.8.1

hamish@Hamish-MBP ~/edge> curl -v -s -H'X-Forwarded-For: 123.123.123.123' -H'X-Test: foobar' localhost/test/foo
> GET /test/foo HTTP/1.1
> User-Agent: curl/7.30.0
> Host: localhost
> Accept: */*
> X-Forwarded-For: 123.123.123.123
> X-Test: foobar
>
< HTTP/1.1 200 OK
< Server: openresty/1.5.8.1
< Date: Tue, 23 Sep 2014 13:54:27 GMT
< Content-Type: application/octet-stream
< Transfer-Encoding: chunked
< Connection: keep-alive
<
host: test
connection: close
x-test: foobar
accept: */*
user-agent: curl/7.30.0

nginx.conf

error_log  logs/error.log debug;
events {
    worker_connections  1024;
}

http {
    default_type  application/octet-stream;

    keepalive_timeout  65;

    upstream test {
        server 127.0.0.1:81;
        keepalive 128;
    }

    #proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; # works
    #proxy_set_header X-Forwarded-For "10.10.10.10";              # works
    proxy_set_header X-Forwarded-For $http_x_forwarded_for;       # does not work
    proxy_set_header X-Proxy-Test $http_x_forwarded_for;          # does not work
    proxy_set_header X-Test $http_x_test;                         # works

    server {
        listen 80;
        location /test {
            content_by_lua '
                local res = ngx.location.capture("/__test" .. ngx.var.request_uri)
                ngx.say(res.body)
            ';

        }
        location /test2 {
            rewrite .* /__test$request_uri;
        }
        location /test3 {
            content_by_lua '
                ngx.exec("/__test"..ngx.var.uri)
            ';
        }
        location /__test {
            proxy_pass $scheme://test;
        }

    }
    server {
        listen 81;
        location / {
            content_by_lua '
                local h = ngx.req.get_headers()
                for k,v in pairs(h) do
                    ngx.say(k,": ", v)
                end
            ';
        }
    }

}