add header to response in nginx location directive

nginx, nginx-location

Solution

The `rewrite` statement is an implicit `rewrite...last`, which means that the final URI `/119.img` is not processed by this `location` block. By the time the response headers are being calculated, `nginx` is in a different `location` block.

You could try processing the final URI from within the same location block, by using a `rewrite...break` statement. See this document for details.

location = /my.img {
    root /path/to/file;
    rewrite ^ /119.img break;
    add_header x-amz-meta-sig 1234567890abcdef;
}

If the `location` is intended to match only one URI, use the `=` format. See this document for details.

Note also that the presence of an `add_header` statement in this `location` block, will mean that the outer statement will no longer be inherited. See this document for details. :

Problem

I try to add a response header to only one location path served and have an nginx config looks like ``` server { ... add_header x-test test; location /my.img { rewrite ^/my.img$ /119.img; add_header x-amz-meta-sig 1234567890abcdef; } } ``` But only the top-level header (x-test) is effective, the one within the location directive does not show up as shown in ``` $ curl -v -o /tmp/test.img 'https://www.example.com/my.img' < HTTP/1.1 200 OK < Server: nginx/1.9.3 (Ubuntu) < Date: Sun, 14 May 2017 23:58:08 GMT < Content-Type: application/octet-stream < Content-Length: 251656 < Last-Modified: Fri, 03 Mar 2017 04:57:47 GMT < Connection: keep-alive < ETag: "58b8f7cb-3d708" < x-test: test < Accept-Ranges: bytes < { [16104 bytes data] ``` How to send back a custom headrr only for the specific file served.

Original source