Static brotli/gzip and reverse proxy config question

francislavoie · December 13, 2020, 7:13pm

This thread shows an example of how to do it. It’s a bit complicated because you need to do rewrites and set headers based on whether a pre-compressed file exists on disk.

We’re tracking support for content negotiation in the following github issue. There’s a lot of design work and consideration that needs to be done to implement it correctly. It’s definitely something we want to get in eventually.

github.com/caddyserver/caddy

v2: Content negotiation

opened 06:08PM - 11 Jul 19 UTC

closed 11:37PM - 07 Jun 21 UTC

mholt

help wanted

discussion

Caddy 2 needs a generic, powerful way to do content negotiation. Currently, t…he `http.handlers.encode` module negotiates its encoding from the Accept-Encoding header. However, for pre-compressed assets or other kinds of content negotiation, different facilities are required. Content negotiation can be based on MIME type (Accept header), encoding (Accept-Encoding header), or language (Accept-Language) header. I propose a content negotiation request matcher: ```json "content_negotiation": { "mime": ["text/plain", "text/html"], "encoding": ["br", "gzip", "flate"], "language": ["en-US"] } ``` For each negotiated variance, a placeholder would be added indicating what was negotiated, for example: `{http.matchers.content_negotiation.mime}` TODO: We would also need a way to add a Vary header to the response. Maybe a matcher is not the right solution. This might have to be a middleware... hm.

Finally just as a quick note, you can replace handle + uri strip_prefix with just handle_path, it has path prefix stripping logic built in.

Also, I recommend using the root directive rather than the subdirective to file_server, that way the root will be set for all directives in your handle (will be necessary since the file matcher also needs to know the root to work)

handle_path /_next/static/* {
	root * /home/xyz/nextjs-built-project/.next/static

	# Precompress rewrites goes here

	file_server
}