Remove ContentLengthLimit (#1400)

* feat: remove ContentLengthLimit

* feat: remove ContentLengthLimit rejections

* fix: update multipart docs

* fix: typo

* feat: add wip extractor code

* feat: revert "feat: add wip extractor code"

* fix: update Multipart docs

* fix: update examples

* fix: missing import in an example

* fix: broken import yet again

* fix: disable default body limit for example

* fix: key value store example

* fix: update expected debug_handler output

* chore: update CHANGELOG

* Update axum/CHANGELOG.md

Co-authored-by: David Pedersen <[email protected]>

examples/multipart-form/src/main.rs

@@ -5,12 +5,13 @@
 //! ```
 
 use axum::{
-    extract::{ContentLengthLimit, Multipart},
+    extract::{DefaultBodyLimit, Multipart},
     response::Html,
     routing::get,
     Router,
 };
 use std::net::SocketAddr;
+use tower_http::limit::RequestBodyLimitLayer;
 use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
 
 #[tokio::main]
@@ -26,6 +27,10 @@ async fn main() {
     // build our application with some routes
     let app = Router::new()
         .route("/", get(show_form).post(accept_form))
+        .layer(DefaultBodyLimit::disable())
+        .layer(RequestBodyLimitLayer::new(
+            250 * 1024 * 1024, /* 250mb */
+        ))
         .layer(tower_http::trace::TraceLayer::new_for_http());
 
     // run it with hyper
@@ -58,14 +63,7 @@ async fn show_form() -> Html<&'static str> {
     )
 }
 
-async fn accept_form(
-    ContentLengthLimit(mut multipart): ContentLengthLimit<
-        Multipart,
-        {
-            250 * 1024 * 1024 /* 250mb */
-        },
-    >,
-) {
+async fn accept_form(mut multipart: Multipart) {
     while let Some(field) = multipart.next_field().await.unwrap() {
         let name = field.name().unwrap().to_string();
         let file_name = field.file_name().unwrap().to_string();