refactor logger middleware

examples/basic.rs

@@ -49,7 +49,7 @@ fn main() {
     HttpServer::new(
         Application::default("/")
             // enable logger
-            .middleware(middlewares::Logger::new(None))
+            .middleware(middlewares::Logger::default())
             // register simple handle r, handle all methods
             .handler("/index.html", index)
             // with path parameters

examples/state.rs

@@ -74,7 +74,7 @@ fn main() {
     HttpServer::new(
         Application::builder("/", AppState{counter: Cell::new(0)})
             // enable logger
-            .middleware(middlewares::Logger::new(None))
+            .middleware(middlewares::Logger::default())
             // websocket route
             .resource("/ws/", |r| r.get::<MyWebSocket>())
             // register simple handler, handle all methods

examples/tls/src/main.rs

@@ -32,7 +32,7 @@ fn main() {
     HttpServer::new(
         Application::default("/")
             // enable logger
-            .middleware(middlewares::Logger::new(None))
+            .middleware(middlewares::Logger::default())
             // register simple handler, handle all methods
             .handler("/index.html", index)
             // with path parameters

examples/websocket.rs

@@ -73,7 +73,7 @@ fn main() {
     HttpServer::new(
         Application::default("/")
             // enable logger
-            .middleware(middlewares::Logger::new(None))
+            .middleware(middlewares::Logger::default())
             // websocket route
             .resource("/ws/", |r| r.get::<MyWebSocket>())
             .route_handler("/", StaticFiles::new("examples/static/", true)))