I'm specifically trying to test the case where my application doesn't receive a Content-Length header from the server, so I've set up my code not to include that header, but for some reason Spring is including it anyway with a value of 0:
@RequestMapping(value = "/test", method = RequestMethod.HEAD)
public void headTest(HttpServletRequest request, HttpServletResponse response) {
response.addDateHeader("Date", System.currentTimeMillis());
response.addHeader("Accept-Ranges", "bytes");
response.addHeader("Content-Type", "video/mp4");
}
$ curl -I http://myserver.com:8600/test
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Date: Thu, 28 Jul 2022 01:05:11 GMT
Accept-Ranges: bytes
Content-Type: video/mp4
Content-Length: 0
How can I stop Spring from including this header?
Setting a header to null
to effectively remove it from the response works for embedded Tomcat and might work for other servers:
response.setHeader("Content-Length", null);