https://bz.apache.org/bugzilla/show_bug.cgi?id=69379
--- Comment #6 from m...@jfrog.com ---
It is as simple as this:
On Tomcat 9.x.x and Jersey, create an empty resource accepting HEAD requests:
@HEAD
@Path("/test/head")
public Response testHead() {
return Response.ok().build();
}
curl --head http://<host:port>/test/head
Observe no `Content-length' header returned.
Do the same on Tomcat 10.x.x.
Observe `Content-length: 0` returned.
Now imagine a client expecting `Content-length` header to be returned if and
only if there is actual content. This is a behavioral change and essentially a
bug.
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