update examples to v4 (#258)

examples/url-dispatch/src/cfg.rs

@@ -12,12 +12,12 @@ App::new().service(
         web::route()
             .guard(guard::Get())
             .guard(guard::Header("content-type", "text/plain"))
-            .to(|| HttpResponse::Ok()),
+            .to(HttpResponse::Ok),
     ),
 )
 // </cfg>
     })
-    .bind("127.0.0.1:8080")?
+    .bind(("127.0.0.1", 8080))?
     .run()
     .await
 }

examples/url-dispatch/src/dhandler.rs

@@ -14,10 +14,10 @@ async fn main() -> std::io::Result<()> {
             .default_service(
                 web::route()
                     .guard(guard::Not(guard::Get()))
-                    .to(|| HttpResponse::MethodNotAllowed()),
+                    .to(HttpResponse::MethodNotAllowed),
             )
     })
-    .bind("127.0.0.1:8080")?
+    .bind(("127.0.0.1", 8080))?
     .run()
     .await
 }

examples/url-dispatch/src/guard.rs

@@ -1,11 +1,16 @@
 // <guard>
-use actix_web::{dev::RequestHead, guard::Guard, http, HttpResponse};
+use actix_web::{
+    guard::{Guard, GuardContext},
+    http, HttpResponse,
+};
 
 struct ContentTypeHeader;
 
 impl Guard for ContentTypeHeader {
-    fn check(&self, req: &RequestHead) -> bool {
-        req.headers().contains_key(http::header::CONTENT_TYPE)
+    fn check(&self, req: &GuardContext) -> bool {
+        req.head()
+            .headers()
+            .contains_key(http::header::CONTENT_TYPE)
     }
 }
 
@@ -16,12 +21,10 @@ async fn main() -> std::io::Result<()> {
     HttpServer::new(|| {
         App::new().route(
             "/",
-            web::route()
-                .guard(ContentTypeHeader)
-                .to(|| HttpResponse::Ok()),
+            web::route().guard(ContentTypeHeader).to(HttpResponse::Ok),
         )
     })
-    .bind("127.0.0.1:8080")?
+    .bind(("127.0.0.1", 8080))?
     .run()
     .await
 }

examples/url-dispatch/src/guard2.rs

@@ -8,10 +8,10 @@ async fn main() -> std::io::Result<()> {
             "/",
             web::route()
                 .guard(guard::Not(guard::Get()))
-                .to(|| HttpResponse::MethodNotAllowed()),
+                .to(HttpResponse::MethodNotAllowed),
         )
     })
-    .bind("127.0.0.1:8080")?
+    .bind(("127.0.0.1", 8080))?
     .run()
     .await
 }

examples/url-dispatch/src/main.rs

@@ -26,7 +26,7 @@ async fn main() -> std::io::Result<()> {
             .route("/", web::get().to(index))
             .route("/user", web::post().to(index))
     })
-    .bind("127.0.0.1:8080")?
+    .bind(("127.0.0.1", 8080))?
     .run()
     .await
 }

examples/url-dispatch/src/minfo.rs

@@ -12,7 +12,7 @@ async fn index(req: HttpRequest) -> Result<String> {
 #[actix_web::main]
 async fn main() -> std::io::Result<()> {
     HttpServer::new(|| App::new().service(index))
-        .bind("127.0.0.1:8080")?
+        .bind(("127.0.0.1", 8080))?
         .run()
         .await
 }

examples/url-dispatch/src/norm.rs

@@ -16,7 +16,7 @@ async fn main() -> std::io::Result<()> {
             .wrap(middleware::NormalizePath::default())
             .route("/resource/", web::to(index))
     })
-    .bind("127.0.0.1:8080")?
+    .bind(("127.0.0.1", 8080))?
     .run()
     .await
 }

examples/url-dispatch/src/norm2.rs

@@ -1,7 +1,7 @@
 use actix_web::HttpResponse;
 
 #[get("/resource/")]
-fn index() -> HttpResponse {
+async fn index() -> HttpResponse {
     HttpResponse::Ok().body("Hello")
 }
 
@@ -16,7 +16,7 @@ async fn main() -> std::io::Result<()> {
             .service(index)
             .default_service(web::route().method(Method::GET))
     })
-    .bind("127.0.0.1:8080")?
+    .bind(("127.0.0.1", 8080))?
     .run()
     .await
 }

examples/url-dispatch/src/path.rs

@@ -10,7 +10,7 @@ async fn index(info: web::Path<(String, u32)>) -> Result<String> {
 #[actix_web::main]
 async fn main() -> std::io::Result<()> {
     HttpServer::new(|| App::new().service(index))
-        .bind("127.0.0.1:8080")?
+        .bind(("127.0.0.1", 8080))?
         .run()
         .await
 }

examples/url-dispatch/src/path2.rs

@@ -16,7 +16,7 @@ async fn index(info: web::Path<Info>) -> Result<String> {
 #[actix_web::main]
 async fn main() -> std::io::Result<()> {
     HttpServer::new(|| App::new().service(index))
-        .bind("127.0.0.1:8080")?
+        .bind(("127.0.0.1", 8080))?
         .run()
         .await
 }

examples/url-dispatch/src/resource.rs

@@ -1,7 +1,7 @@
 // <resource>
 use actix_web::{guard, web, App, HttpResponse};
 
-fn index() -> HttpResponse {
+async fn index() -> HttpResponse {
     HttpResponse::Ok().body("Hello")
 }
 
@@ -12,8 +12,8 @@ pub fn main() {
             web::resource("/user/{name}")
                 .name("user_detail")
                 .guard(guard::Header("content-type", "application/json"))
-                .route(web::get().to(|| HttpResponse::Ok()))
-                .route(web::put().to(|| HttpResponse::Ok())),
+                .route(web::get().to(HttpResponse::Ok))
+                .route(web::put().to(HttpResponse::Ok)),
         );
 }
 // </resource>

examples/url-dispatch/src/scope.rs

@@ -20,7 +20,7 @@ async fn main() -> std::io::Result<()> {
                 .service(user_detail),
         )
     })
-    .bind("127.0.0.1:8080")?
+    .bind(("127.0.0.1", 8080))?
     .run()
     .await
 }

examples/url-dispatch/src/url_ext.rs

@@ -6,7 +6,7 @@ async fn index(req: HttpRequest) -> impl Responder {
     let url = req.url_for("youtube", &["oHg5SJYRHA0"]).unwrap();
     assert_eq!(url.as_str(), "https://youtube.com/watch/oHg5SJYRHA0");
 
-    url.into_string()
+    url.to_string()
 }
 
 #[actix_web::main]
@@ -16,7 +16,7 @@ async fn main() -> std::io::Result<()> {
             .service(index)
             .external_resource("youtube", "https://youtube.com/watch/{video_id}")
     })
-    .bind("127.0.0.1:8080")?
+    .bind(("127.0.0.1", 8080))?
     .run()
     .await
 }

examples/url-dispatch/src/urls.rs

@@ -6,7 +6,7 @@ async fn index(req: HttpRequest) -> Result<HttpResponse> {
     let url = req.url_for("foo", &["1", "2", "3"])?; // <- generate url for "foo" resource
 
     Ok(HttpResponse::Found()
-        .header(header::LOCATION, url.as_str())
+        .insert_header((header::LOCATION, url.as_str()))
         .finish())
 }
 
@@ -20,11 +20,11 @@ async fn main() -> std::io::Result<()> {
                 web::resource("/test/{a}/{b}/{c}")
                     .name("foo") // <- set resource name, then it could be used in `url_for`
                     .guard(guard::Get())
-                    .to(|| HttpResponse::Ok()),
+                    .to(HttpResponse::Ok),
             )
             .service(index)
     })
-    .bind("127.0.0.1:8080")?
+    .bind(("127.0.0.1", 8080))?
     .run()
     .await
 }