refactor(nixos): model route protocols explicitly

configs/nixos/modules/services/reverse-proxy.nix

@@ -11,7 +11,9 @@ let
     lib.mapAttrsToList (
       host: routes:
       lib.concatLists (
-        lib.mapAttrsToList (entry: route: map (mkUdpStream host entry) route.udp.ports) routes
+        lib.mapAttrsToList (
+          entry: route: lib.optionals (route.protocol == "udp") (map (mkUdpStream host entry) route.ports)
+        ) routes
       )
     ) registry.route
   );
@@ -75,7 +77,7 @@ let
     lib.mapAttrsToList (
       host: routes:
       lib.mapAttrsToList (entry: _route: mkVirtualHost host entry "https") (
-        lib.filterAttrs (_entry: route: route.port != null) routes
+        lib.filterAttrs (_entry: route: route.protocol == "https") routes
       )
     ) registry.route
   );
@@ -89,7 +91,7 @@ let
           or (throw "no matching entry in registry.address for ${mkRegistryPath "route" host entry}");
       compositeEntry = registry.join host entry;
       inherit (compositeEntry) route;
-      port = if isHttp then route.http.port else route.port;
+      inherit (route) port;
     in
     {
       inherit host entry;
@@ -108,7 +110,7 @@ let
     lib.mapAttrsToList (
       host: routes:
       lib.mapAttrsToList (entry: _route: mkVirtualHost host entry "http") (
-        lib.filterAttrs (_entry: route: route.http.port != null) routes
+        lib.filterAttrs (_entry: route: route.protocol == "http") routes
       )
     ) registry.route
   );