Update information on Compress middleware (#279)

docs/response.md

@@ -38,31 +38,17 @@ Actix Web can automatically _compress_ payloads with the [_Compress middleware_]
 - Deflate
 - Identity
 
-<CodeBlock example="responses" file="compress.rs" section="compress" />
+A response's `Content-Encoding` header defaults to `ContentEncoding::Auto`, which performs automatic content compression negotiation based on the request's `Accept-Encoding` header.
-
-Response payload is compressed based on the _encoding_ parameter from the `middleware::BodyEncoding` trait. By default, `ContentEncoding::Auto` is used. If `ContentEncoding::Auto` is selected, then the compression depends on the request's `Accept-Encoding` header.
-
-> `ContentEncoding::Identity` can be used to disable compression. If another content encoding is selected, the compression is enforced for that codec.
-
-For example, to enable `brotli` for a single handler use `ContentEncoding::Br`:
-
-<CodeBlock example="responses" file="brotli.rs" section="brotli" />
-
-or for the entire application:
-
-<CodeBlock example="responses" file="brotli_two.rs" section="brotli-two" />
-
-In this case we explicitly disable content compression by setting content encoding to an `Identity` value:
-
-<CodeBlock example="responses" file="identity.rs" section="identity" />
-
-When dealing with an already compressed body (for example when serving assets), set the content encoding to `Identity` to avoid compressing the already compressed data and set the `content-encoding` header manually:
-
-<CodeBlock example="responses" file="identity_two.rs" section="identity-two" />
-
-Also it is possible to set default content encoding on application level, by default `ContentEncoding::Auto` is used, which implies automatic content compression negotiation.
 
 <CodeBlock example="responses" file="auto.rs" section="auto" />
 
+Explicitly disable content compression on a handler by setting `Content-Encoding` to an `Identity` value:
+
+<CodeBlock example="responses" file="identity.rs" section="identity" />
+
+When dealing with an already compressed body (for example, when serving pre-compressed assets), set the `Content-Encoding` header on the response manually to bypass the middleware:
+
+<CodeBlock example="responses" file="identity_two.rs" section="identity-two" />
+
 [responsebuilder]: https://docs.rs/actix-web/4/actix_web/struct.HttpResponseBuilder.html
 [compressmidddleware]: https://docs.rs/actix-web/4/actix_web/middleware/struct.Compress.html

examples/responses/src/brotli.rs

@@ -1,20 +0,0 @@
-// <brotli>
-use actix_web::{get, middleware, App, HttpResponse, HttpServer};
-
-#[get("/")]
-async fn index_br() -> HttpResponse {
-    HttpResponse::Ok().body("data")
-}
-
-#[actix_web::main]
-async fn main() -> std::io::Result<()> {
-    HttpServer::new(|| {
-        App::new()
-            .wrap(middleware::Compress::default())
-            .service(index_br)
-    })
-    .bind(("127.0.0.1", 8080))?
-    .run()
-    .await
-}
-// </brotli>

examples/responses/src/brotli_two.rs

@@ -1,21 +0,0 @@
-// <brotli-two>
-use actix_web::{http::ContentEncoding, dev::BodyEncoding, HttpResponse};
-
-async fn index_br() -> HttpResponse {
-    HttpResponse::Ok().body("data")
-}
-
-#[actix_web::main]
-async fn main() -> std::io::Result<()> {
-    use actix_web::{middleware, web, App, HttpServer};
-
-    HttpServer::new(|| {
-        App::new()
-            .wrap(middleware::Compress::new(ContentEncoding::Br))
-            .route("/", web::get().to(index_br))
-    })
-    .bind(("127.0.0.1", 8080))?
-    .run()
-    .await
-}
-// </brotli-two>

examples/responses/src/compress.rs

@@ -1,20 +0,0 @@
-// <compress>
-use actix_web::{get, middleware, App, HttpResponse, HttpServer};
-
-#[get("/")]
-async fn index_br() -> HttpResponse {
-    HttpResponse::Ok().body("data")
-}
-
-#[actix_web::main]
-async fn main() -> std::io::Result<()> {
-    HttpServer::new(|| {
-        App::new()
-            .wrap(middleware::Compress::default())
-            .service(index_br)
-    })
-    .bind(("127.0.0.1", 8080))?
-    .run()
-    .await
-}
-// </compress>

examples/responses/src/main.rs

@@ -1,7 +1,5 @@
 pub mod auto;
-pub mod brotli;
 pub mod chunked;
-pub mod compress;
 pub mod identity;
 pub mod identity_two;
 pub mod json_resp;