Need explanation on multiple header directives

[francislavoie]

This article explains what you’re asking about:

Composing in the Caddyfile

Web server config files are mostly about expressing HTTP handling logic. Often, various handlers or middlewares need to be “composed” to form a cohesive HTTP handler that returns the desired responses. Structurally, config files are basically limited to two dimensions: rows and columns (or, lines and tokens). Syntactically, a config file’s second dimension can expand into more dimensions or scopes when blocks are opened (which are usually represented by curly braces { } and/or indentation, simi…