Add headers config, closes #25

config.default.toml

@@ -68,3 +68,7 @@ enabled = false
 max_age = 31536000
 include_subdomains = false
 preload = false
+
+# Add your own HTTP headers to the index page
+[headers]
+# X-Example = "Rainbows"

config/config.go

@@ -14,6 +14,7 @@ type Config struct {
 	Dev                bool
 	HexIP              bool
 	VerifyCertificates bool `mapstructure:"verify_certificates"`
+	Headers            map[string]string
 	Defaults           *Defaults
 	HTTPS              *HTTPS
 	LetsEncrypt        *LetsEncrypt

server/serve_files.go

@@ -323,6 +323,10 @@ func (d *Dispatch) serveIndex(w http.ResponseWriter, r *http.Request) {
 		w.Header().Set("Strict-Transport-Security", hstsHeader)
 	}
 
+	for k, v := range d.Config().Headers {
+		w.Header().Set(k, v)
+	}
+
 	if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
 		w.Header().Set("Content-Encoding", "gzip")
 		w.Header().Set("Content-Length", indexPageLen)