Explaining some available directives

Caddyfile-Directives.md

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+This page describes the Caddyfile directives and how to use them. Each directive has a corresponding middleware which alters the behavior of the server.
+
+This list is presented alphabetically. The order in which directives appear in the Caddyfile does not matter.
+
+## List of directives
+
+
+#### ext
+
+Internally adds extensions to the requests. Extensions will be tried in the order listed. This allows you to easily serve cleaner URLs.
+
+```
+ext .html .html .txt
+```
+
+
+#### gzip
+
+Enables gzip compression if the client supports it.
+
+```
+gzip
+```
+
+
+#### header
+
+Adds header(s) of the specified name and value to the responses of requests matching the request path. You can specify a single header and value on a line or group them under the same path with curly braces.
+
+```
+header /one X-Some-Header 1
+header /multiple {
+    Access-Control-Allow-Origin  *
+    Access-Control-Allow-Methods "POST, GET, OPTIONS"
+```
+
+#### import
+
+Import acts like "include" in other languages/syntaxes. It replaces that line with the contents of another file. Useful for reusing common settings.
+
+```
+import shared.conf
+```
+
+
+#### log
+
+Activates logging. Right now, only requests can be logged. You may optionally specify an output file and format.
+
+```
+log requests /var/log/access.log "Got a request: {method} {path}"
+```
+
+To specify a format but use the default filename, use `_` as the filename (Go-style). The filename can also be `stdout` or `stderr` instead of an actual file.
+
+The following variables are available when specifying the format:
+
+- {method}
+- {scheme}
+- {host}
+- {path}
+- {query}
+- {fragment}
+- {proto}
+- {remote}
+- {port}
+- {uri}
+- {when}
+- {status}
+- {size}
+
+#### redirect
+
+HTTP redirect with the given status code.
+
+```
+redirect /from /to 302
+```
+
+
+#### rewrite
+
+Internally rewrites a request from one path to another.
+
+```
+rewrite /from /to
+```
+
+
+#### root
+
+Specifies the root directory from which to serve files.
+
+```
+root /usr/www
+```
+
+
+#### tls
+
+Enables TLS (better than plain SSL) using the specified certificate and key files.
+
+```
+tls cert.pem key.pem
+```