Thank you for the responses. I did not read the article posted, but I did
run the node app without nginx just now, and I think all header entries now
appear as they should. I'm rushing through this while at work with limited
tools, therefor the I think part. But it does seem to now point to
I just disabled nginx, added 'Content-Type' back into my node app, cleared
my browser cache and fired up node without nginx. All headers now appear.
Funny thing, I went to the Nginx IRC channel looking for ideas, and they
immediately talked me back into my node app being the problem.
Now I
I would expect NGINX to be doing some level of caching based on the ETag,
but I would also expect it to be using the Content-Type as part of the
cache validation, which is controlled by the Vary header.
Here's a reasonable looking article (I only skimmed) on it that might give
you enough
