Dynamic proxy with nginx based on url param

Question

I am loading images from an external site which I want to use in a 3D WebGL canvas. However this is not allowed due to origin.

The URL I am generating from the web page is as follows:

http://domain/somename/imagesproxy?url=http%3A%2F%2Fanothersite%2Fimage.png

Now I want to proxy_pass I assume, to the URL included in the request.

location /somename/imagesproxy {
     proxy_pass  ...
     proxy_set_header  host localhost;
}

How do I get nginx to dynamically proxy to different URL's

From what I have read nginx is not designed to be a forward proxy however I would like to use an nginx solution if possible. — sphvn, Jul 27 '12 at 13:04

score 9 · Accepted Answer · answered Jul 27 '12 at 13:19

9

proxy_pass $arg_uri;

answered Jul 27 '12 at 13:19

VBart

8,159
3
24
25

1

It should be `proxy_pass $arg_url;` to exactly match the argument in the question. – puzzlement Jan 09 '17 at 12:06
works great, BUT only if the "url" parameter is not urlencoded :( – jitbit Oct 26 '20 at 08:11

score -1 · Answer 2 · edited Apr 08 '16 at 07:51

-1

location = / {
    if ($args ~ "^url=(.+)") { #gets the "url" get parameter
        set $key1 $1;
        proxy_pass $key1; #use the parameter as proxy address
    }
}

edited Apr 08 '16 at 07:51

Sven

97,248
13
177
225

answered Apr 08 '16 at 07:28

Shivam Barman

19

4

This answer requires explanation. – kasperd Apr 08 '16 at 10:22

Dynamic proxy with nginx based on url param

2 Answers2

Linked