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axum/CHANGELOG.md

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# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
# Unreleased
- **fixed:** All known compile time issues are resolved, including those with
`boxed` and those introduced by Rust 1.56 ([#404])
- Big internal refactoring of routing leading to several improvements ([#363])
- **added:** Wildcard routes like `.route("/api/users/*rest", service)` are now supported.
- **fixed:** The order routes are added in no longer matters.
- **fixed:** Adding a conflicting route will now cause a panic instead of silently making
a route unreachable.
- **fixed:** Route matching is faster as number of routes increase.
- **breaking:** The routes `/foo` and `/:key` are considered to overlap and
will cause a panic when constructing the router. This might be fixed in the future.
- **fixed:** Expand accepted content types for JSON requests ([#378])
- **breaking:** The router's type is now always `Router` regardless of how many routes or
middleware are applies ([#404])
This means router types are all always nameable:
```rust
fn my_routes() -> Router {
Router::new().route(
"/users",
post(|| async { "Hello, World!" }),
)
}
```
- **breaking:** `Route::boxed` and `BoxRoute` have been removed as they're no longer
necessary ([#404])
- **breaking:** `Route`, `Nested`, `Or` types are now private. They no longer had to be
public because `Router` is internally boxed ([#404])
- **breaking:** Automatically do percent decoding in `extract::Path`
([#272])
- **breaking:** Added feature flags for HTTP1 and JSON. This enables removing a
few dependencies if your app only uses HTTP2 or doesn't use JSON. Its only a
breaking change if you depend on axum with `default_features = false`. ([#286])
- **breaking:** Remove `routing::Layered` as it didn't actually do anything and
thus wasn't necessary
- **breaking:** Change `Connected::connect_info` to return `Self` and remove
the associated type `ConnectInfo` ([#396])
- **breaking:** Simplify error handling model ([#402]):
- All services part of the router are now required to be infallible.
- Error handling utilities have been moved to an `error_handling` module.
- `Router::check_infallible` has been removed since routers are always
infallible with the error handling changes.
- Error handling closures must now handle all errors and thus always return
something that implements `IntoResponse`.
With these changes handling errors from fallible middleware is done like so:
```rust,no_run
use axum::{
handler::get,
http::StatusCode,
error_handling::HandleErrorLayer,
response::IntoResponse,
Router, BoxError,
};
use tower::ServiceBuilder;
use std::time::Duration;
let middleware_stack = ServiceBuilder::new()
// Handle errors from middleware
//
// This middleware most be added above any fallible
// ones if you're using `ServiceBuilder`, due to how ordering works
.layer(HandleErrorLayer::new(handle_error))
// Return an error after 30 seconds
.timeout(Duration::from_secs(30));
let app = Router::new()
.route("/", get(|| async { /* ... */ }))
.layer(middleware_stack);
fn handle_error(_error: BoxError) -> impl IntoResponse {
StatusCode::REQUEST_TIMEOUT
}
```
And handling errors from fallible leaf services is done like so:
```rust
use axum::{
Router, service,
body::Body,
handler::get,
response::IntoResponse,
http::{Request, Response},
error_handling::HandleErrorExt, // for `.handle_error`
};
use std::{io, convert::Infallible};
use tower::service_fn;
let app = Router::new()
.route(
"/",
service::get(service_fn(|_req: Request<Body>| async {
let contents = tokio::fs::read_to_string("some_file").await?;
Ok::<_, io::Error>(Response::new(Body::from(contents)))
}))
.handle_error(handle_io_error),
);
fn handle_io_error(error: io::Error) -> impl IntoResponse {
// ...
}
```
[#339]: https://github.com/tokio-rs/axum/pull/339
[#286]: https://github.com/tokio-rs/axum/pull/286
[#272]: https://github.com/tokio-rs/axum/pull/272
[#378]: https://github.com/tokio-rs/axum/pull/378
[#363]: https://github.com/tokio-rs/axum/pull/363
[#396]: https://github.com/tokio-rs/axum/pull/396
[#402]: https://github.com/tokio-rs/axum/pull/402
[#404]: https://github.com/tokio-rs/axum/pull/404
# 0.2.8 (07. October, 2021)
- Document debugging handler type errors with "axum-debug" ([#372])
[#372]: https://github.com/tokio-rs/axum/pull/372
# 0.2.7 (06. October, 2021)
- Bump minimum version of async-trait ([#370])
[#370]: https://github.com/tokio-rs/axum/pull/370
# 0.2.6 (02. October, 2021)
- Clarify that `handler::any` and `service::any` only accepts standard HTTP
methods ([#337])
- Document how to customize error responses from extractors ([#359])
[#337]: https://github.com/tokio-rs/axum/pull/337
[#359]: https://github.com/tokio-rs/axum/pull/359
# 0.2.5 (18. September, 2021)
- Add accessors for `TypedHeaderRejection` fields ([#317])
- Improve docs for extractors ([#327])
[#317]: https://github.com/tokio-rs/axum/pull/317
[#327]: https://github.com/tokio-rs/axum/pull/327
# 0.2.4 (10. September, 2021)
- Document using `StreamExt::split` with `WebSocket` ([#291])
- Document adding middleware to multiple groups of routes ([#293])
[#291]: https://github.com/tokio-rs/axum/pull/291
[#293]: https://github.com/tokio-rs/axum/pull/293
# 0.2.3 (26. August, 2021)
- **fixed:** Fix accidental breaking change introduced by internal refactor.
`BoxRoute` used to be `Sync` but was accidental made `!Sync` ([#273](https://github.com/tokio-rs/axum/pull/273))
# 0.2.2 (26. August, 2021)
- **fixed:** Fix URI captures matching empty segments. This means requests with
URI `/` will no longer be matched by `/:key` ([#264](https://github.com/tokio-rs/axum/pull/264))
- **fixed:** Remove needless trait bounds from `Router::boxed` ([#269](https://github.com/tokio-rs/axum/pull/269))
# 0.2.1 (24. August, 2021)
- **added:** Add `Redirect::to` constructor ([#255](https://github.com/tokio-rs/axum/pull/255))
- **added:** Document how to implement `IntoResponse` for custom error type ([#258](https://github.com/tokio-rs/axum/pull/258))
# 0.2.0 (23. August, 2021)
- Overall:
- **fixed:** Overall compile time improvements. If you're having issues with compile time
please file an issue! ([#184](https://github.com/tokio-rs/axum/pull/184)) ([#198](https://github.com/tokio-rs/axum/pull/198)) ([#220](https://github.com/tokio-rs/axum/pull/220))
- **changed:** Remove `prelude`. Explicit imports are now required ([#195](https://github.com/tokio-rs/axum/pull/195))
- Routing:
- **added:** Add dedicated `Router` to replace the `RoutingDsl` trait ([#214](https://github.com/tokio-rs/axum/pull/214))
- **added:** Add `Router::or` for combining routes ([#108](https://github.com/tokio-rs/axum/pull/108))
- **fixed:** Support matching different HTTP methods for the same route that aren't defined
together. So `Router::new().route("/", get(...)).route("/", post(...))` now
accepts both `GET` and `POST`. Previously only `POST` would be accepted ([#224](https://github.com/tokio-rs/axum/pull/224))
- **fixed:** `get` routes will now also be called for `HEAD` requests but will always have
the response body removed ([#129](https://github.com/tokio-rs/axum/pull/129))
- **changed:** Replace `axum::route(...)` with `axum::Router::new().route(...)`. This means
there is now only one way to create a new router. Same goes for
`axum::routing::nest`. ([#215](https://github.com/tokio-rs/axum/pull/215))
- **changed:** Implement `routing::MethodFilter` via [`bitflags`](https://crates.io/crates/bitflags) ([#158](https://github.com/tokio-rs/axum/pull/158))
- **changed:** Move `handle_error` from `ServiceExt` to `service::OnMethod` ([#160](https://github.com/tokio-rs/axum/pull/160))
With these changes this app using 0.1:
```rust
use axum::{extract::Extension, prelude::*, routing::BoxRoute, AddExtensionLayer};
let app = route("/", get(|| async { "hi" }))
.nest("/api", api_routes())
.layer(AddExtensionLayer::new(state));
fn api_routes() -> BoxRoute<Body> {
route(
"/users",
post(|Extension(state): Extension<State>| async { "hi from nested" }),
)
.boxed()
}
```
Becomes this in 0.2:
```rust
use axum::{
extract::Extension,
handler::{get, post},
routing::BoxRoute,
Router,
};
let app = Router::new()
.route("/", get(|| async { "hi" }))
.nest("/api", api_routes());
fn api_routes() -> Router<BoxRoute> {
Router::new()
.route(
"/users",
post(|Extension(state): Extension<State>| async { "hi from nested" }),
)
.boxed()
}
```
- Extractors:
- **added:** Make `FromRequest` default to being generic over `body::Body` ([#146](https://github.com/tokio-rs/axum/pull/146))
- **added:** Implement `std::error::Error` for all rejections ([#153](https://github.com/tokio-rs/axum/pull/153))
- **added:** Add `OriginalUri` for extracting original request URI in nested services ([#197](https://github.com/tokio-rs/axum/pull/197))
- **added:** Implement `FromRequest` for `http::Extensions` ([#169](https://github.com/tokio-rs/axum/pull/169))
- **added:** Make `RequestParts::{new, try_into_request}` public so extractors can be used outside axum ([#194](https://github.com/tokio-rs/axum/pull/194))
- **added:** Implement `FromRequest` for `axum::body::Body` ([#241](https://github.com/tokio-rs/axum/pull/241))
- **changed:** Removed `extract::UrlParams` and `extract::UrlParamsMap`. Use `extract::Path` instead ([#154](https://github.com/tokio-rs/axum/pull/154))
- **changed:** `extractor_middleware` now requires `RequestBody: Default` ([#167](https://github.com/tokio-rs/axum/pull/167))
- **changed:** Convert `RequestAlreadyExtracted` to an enum with each possible error variant ([#167](https://github.com/tokio-rs/axum/pull/167))
- **changed:** `extract::BodyStream` is no longer generic over the request body ([#234](https://github.com/tokio-rs/axum/pull/234))
- **changed:** `extract::Body` has been renamed to `extract::RawBody` to avoid conflicting with `body::Body` ([#233](https://github.com/tokio-rs/axum/pull/233))
- **changed:** `RequestParts` changes ([#153](https://github.com/tokio-rs/axum/pull/153))
- `method` new returns an `&http::Method`
- `method_mut` new returns an `&mut http::Method`
- `take_method` has been removed
- `uri` new returns an `&http::Uri`
- `uri_mut` new returns an `&mut http::Uri`
- `take_uri` has been removed
- **changed:** Remove several rejection types that were no longer used ([#153](https://github.com/tokio-rs/axum/pull/153)) ([#154](https://github.com/tokio-rs/axum/pull/154))
- Responses:
- **added:** Add `Headers` for easily customizing headers on a response ([#193](https://github.com/tokio-rs/axum/pull/193))
- **added:** Add `Redirect` response ([#192](https://github.com/tokio-rs/axum/pull/192))
- **added:** Add `body::StreamBody` for easily responding with a stream of byte chunks ([#237](https://github.com/tokio-rs/axum/pull/237))
- **changed:** Add associated `Body` and `BodyError` types to `IntoResponse`. This is
required for returning responses with bodies other than `hyper::Body` from
handlers. See the docs for advice on how to implement `IntoResponse` ([#86](https://github.com/tokio-rs/axum/pull/86))
- **changed:** `tower::util::Either` no longer implements `IntoResponse` ([#229](https://github.com/tokio-rs/axum/pull/229))
This `IntoResponse` from 0.1:
```rust
use axum::{http::Response, prelude::*, response::IntoResponse};
struct MyResponse;
impl IntoResponse for MyResponse {
fn into_response(self) -> Response<Body> {
Response::new(Body::empty())
}
}
```
Becomes this in 0.2:
```rust
use axum::{body::Body, http::Response, response::IntoResponse};
struct MyResponse;
impl IntoResponse for MyResponse {
type Body = Body;
type BodyError = <Self::Body as axum::body::HttpBody>::Error;
fn into_response(self) -> Response<Self::Body> {
Response::new(Body::empty())
}
}
```
- SSE:
- **added:** Add `response::sse::Sse`. This implements SSE using a response rather than a service ([#98](https://github.com/tokio-rs/axum/pull/98))
- **changed:** Remove `axum::sse`. Its been replaced by `axum::response::sse` ([#98](https://github.com/tokio-rs/axum/pull/98))
Handler using SSE in 0.1:
```rust
use axum::{
prelude::*,
sse::{sse, Event},
};
use std::convert::Infallible;
let app = route(
"/",
sse(|| async {
let stream = futures::stream::iter(vec![Ok::<_, Infallible>(
Event::default().data("hi there!"),
)]);
Ok::<_, Infallible>(stream)
}),
);
```
Becomes this in 0.2:
```rust
use axum::{
handler::get,
response::sse::{Event, Sse},
Router,
};
use std::convert::Infallible;
let app = Router::new().route(
"/",
get(|| async {
let stream = futures::stream::iter(vec![Ok::<_, Infallible>(
Event::default().data("hi there!"),
)]);
Sse::new(stream)
}),
);
```
- WebSockets:
- **changed:** Change WebSocket API to use an extractor plus a response ([#121](https://github.com/tokio-rs/axum/pull/121))
- **changed:** Make WebSocket `Message` an enum ([#116](https://github.com/tokio-rs/axum/pull/116))
- **changed:** `WebSocket` now uses `Error` as its error type ([#150](https://github.com/tokio-rs/axum/pull/150))
Handler using WebSockets in 0.1:
```rust
use axum::{
prelude::*,
ws::{ws, WebSocket},
};
let app = route(
"/",
ws(|socket: WebSocket| async move {
// do stuff with socket
}),
);
```
Becomes this in 0.2:
```rust
use axum::{
extract::ws::{WebSocket, WebSocketUpgrade},
handler::get,
Router,
};
let app = Router::new().route(
"/",
get(|ws: WebSocketUpgrade| async move {
ws.on_upgrade(|socket: WebSocket| async move {
// do stuff with socket
})
}),
);
```
- Misc
- **added:** Add default feature `tower-log` which exposes `tower`'s `log` feature. ([#218](https://github.com/tokio-rs/axum/pull/218))
- **changed:** Replace `body::BoxStdError` with `axum::Error`, which supports downcasting ([#150](https://github.com/tokio-rs/axum/pull/150))
- **changed:** `EmptyRouter` now requires the response body to implement `Send + Sync + 'static'` ([#108](https://github.com/tokio-rs/axum/pull/108))
- **changed:** `Router::check_infallible` now returns a `CheckInfallible` service. This
is to improve compile times ([#198](https://github.com/tokio-rs/axum/pull/198))
- **changed:** `Router::into_make_service` now returns `routing::IntoMakeService` rather than
`tower::make::Shared` ([#229](https://github.com/tokio-rs/axum/pull/229))
- **changed:** All usage of `tower::BoxError` has been replaced with `axum::BoxError` ([#229](https://github.com/tokio-rs/axum/pull/229))
- **changed:** Several response future types have been moved into dedicated
`future` modules ([#133](https://github.com/tokio-rs/axum/pull/133))
- **changed:** `EmptyRouter`, `ExtractorMiddleware`, `ExtractorMiddlewareLayer`,
and `QueryStringMissing` no longer implement `Copy` ([#132](https://github.com/tokio-rs/axum/pull/132))
- **changed:** `service::OnMethod`, `handler::OnMethod`, and `routing::Nested` have new response future types ([#157](https://github.com/tokio-rs/axum/pull/157))
# 0.1.3 (06. August, 2021)
- Fix stripping prefix when nesting services at `/` ([#91](https://github.com/tokio-rs/axum/pull/91))
- Add support for WebSocket protocol negotiation ([#83](https://github.com/tokio-rs/axum/pull/83))
- Use `pin-project-lite` instead of `pin-project` ([#95](https://github.com/tokio-rs/axum/pull/95))
- Re-export `http` crate and `hyper::Server` ([#110](https://github.com/tokio-rs/axum/pull/110))
- Fix `Query` and `Form` extractors giving bad request error when query string is empty. ([#117](https://github.com/tokio-rs/axum/pull/117))
- Add `Path` extractor. ([#124](https://github.com/tokio-rs/axum/pull/124))
- Fixed the implementation of `IntoResponse` of `(HeaderMap, T)` and `(StatusCode, HeaderMap, T)` would ignore headers from `T` ([#137](https://github.com/tokio-rs/axum/pull/137))
- Deprecate `extract::UrlParams` and `extract::UrlParamsMap`. Use `extract::Path` instead ([#138](https://github.com/tokio-rs/axum/pull/138))
# 0.1.2 (01. August, 2021)
- Implement `Stream` for `WebSocket` ([#52](https://github.com/tokio-rs/axum/pull/52))
- Implement `Sink` for `WebSocket` ([#52](https://github.com/tokio-rs/axum/pull/52))
- Implement `Deref` most extractors ([#56](https://github.com/tokio-rs/axum/pull/56))
- Return `405 Method Not Allowed` for unsupported method for route ([#63](https://github.com/tokio-rs/axum/pull/63))
- Add extractor for remote connection info ([#55](https://github.com/tokio-rs/axum/pull/55))
- Improve error message of `MissingExtension` rejections ([#72](https://github.com/tokio-rs/axum/pull/72))
- Improve documentation for routing ([#71](https://github.com/tokio-rs/axum/pull/71))
- Clarify required response body type when routing to `tower::Service`s ([#69](https://github.com/tokio-rs/axum/pull/69))
- Add `axum::body::box_body` to converting an `http_body::Body` to `axum::body::BoxBody` ([#69](https://github.com/tokio-rs/axum/pull/69))
- Add `axum::sse` for Server-Sent Events ([#75](https://github.com/tokio-rs/axum/pull/75))
- Mention required dependencies in docs ([#77](https://github.com/tokio-rs/axum/pull/77))
- Fix WebSockets failing on Firefox ([#76](https://github.com/tokio-rs/axum/pull/76))
# 0.1.1 (30. July, 2021)
- Misc readme fixes.
# 0.1.0 (30. July, 2021)
- Initial release.
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