What is a CNAME?

cmd/rio/main.go

@@ -26,8 +26,10 @@ import (
 func handleSubdomain(domain, cname, path, giteaUrl, defaultCsp string, giteaClient *repo.GiteaClient, w http.ResponseWriter) {
 	username := ""
 	if cname != "" {
+		// If we are accessed via a CNAME, then CNAME contains our <user>.<pages domain> value.
 		username = strings.Split(cname, ".")[0]
 	} else {
+		// If we are directly accessed, then domain contains our <user>.<pages domain> value.
 		username = strings.Split(domain, ".")[0]
 	}