# Changelog

## v4.0.0 (2019-01-10)

- chi v4 requires Go 1.10.3+ (or Go 1.9.7+) - we have deprecated support for Go 1.7 and 1.8

- router: respond with 404 on router with no routes (#362)

- router: additional check to ensure wildcard is at the end of a url pattern (#333)

- middleware: deprecate use of http.CloseNotifier (#347)

- middleware: fix RedirectSlashes to include query params on redirect (#334)

- History of changes: see https://github.com/go-chi/chi/compare/v3.3.4...v4.0.0

## v3.3.4 (2019-01-07)

- Minor middleware improvements. No changes to core library/router. Moving v3 into its

- own branch as a version of chi for Go 1.7, 1.8, 1.9, 1.10, 1.11

- History of changes: see https://github.com/go-chi/chi/compare/v3.3.3...v3.3.4

## v3.3.3 (2018-08-27)

- Minor release

- See https://github.com/go-chi/chi/compare/v3.3.2...v3.3.3

## v3.3.2 (2017-12-22)

- Support to route trailing slashes on mounted sub-routers (#281)

- middleware: new `ContentCharset` to check matching charsets. Thank you

  @csucu for your community contribution!

## v3.3.1 (2017-11-20)

- middleware: new `AllowContentType` handler for explicit whitelist of accepted request Content-Types

- middleware: new `SetHeader` handler for short-hand middleware to set a response header key/value

- Minor bug fixes

## v3.3.0 (2017-10-10)

- New chi.RegisterMethod(method) to add support for custom HTTP methods, see _examples/custom-method for usage

- Deprecated LINK and UNLINK methods from the default list, please use `chi.RegisterMethod("LINK")` and `chi.RegisterMethod("UNLINK")` in an `init()` function

## v3.2.1 (2017-08-31)

- Add new `Match(rctx *Context, method, path string) bool` method to `Routes` interface

  and `Mux`. Match searches the mux's routing tree for a handler that matches the method/path

- Add new `RouteMethod` to `*Context`

- Add new `Routes` pointer to `*Context`

- Add new `middleware.GetHead` to route missing HEAD requests to GET handler

- Updated benchmarks (see README)

## v3.1.5 (2017-08-02)

- Setup golint and go vet for the project

- As per golint, we've redefined `func ServerBaseContext(h http.Handler, baseCtx context.Context) http.Handler`

  to `func ServerBaseContext(baseCtx context.Context, h http.Handler) http.Handler`

## v3.1.0 (2017-07-10)

- Fix a few minor issues after v3 release

- Move `docgen` sub-pkg to https://github.com/go-chi/docgen

- Move `render` sub-pkg to https://github.com/go-chi/render

- Add new `URLFormat` handler to chi/middleware sub-pkg to make working with url mime 

  suffixes easier, ie. parsing `/articles/1.json` and `/articles/1.xml`. See comments in

  https://github.com/go-chi/chi/blob/master/middleware/url_format.go for example usage.

## v3.0.0 (2017-06-21)

- Major update to chi library with many exciting updates, but also some *breaking changes*

- URL parameter syntax changed from `/:id` to `/{id}` for even more flexible routing, such as

  `/articles/{month}-{day}-{year}-{slug}`, `/articles/{id}`, and `/articles/{id}.{ext}` on the

  same router

- Support for regexp for routing patterns, in the form of `/{paramKey:regExp}` for example:

  `r.Get("/articles/{name:[a-z]+}", h)` and `chi.URLParam(r, "name")`

- Add `Method` and `MethodFunc` to `chi.Router` to allow routing definitions such as

  `r.Method("GET", "/", h)` which provides a cleaner interface for custom handlers like

  in `_examples/custom-handler`

- Deprecating `mux#FileServer` helper function. Instead, we encourage users to create their

  own using file handler with the stdlib, see `_examples/fileserver` for an example

- Add support for LINK/UNLINK http methods via `r.Method()` and `r.MethodFunc()`

- Moved the chi project to its own organization, to allow chi-related community packages to

  be easily discovered and supported, at: https://github.com/go-chi

- *NOTE:* please update your import paths to `"github.com/go-chi/chi"`

- *NOTE:* chi v2 is still available at https://github.com/go-chi/chi/tree/v2

## v2.1.0 (2017-03-30)

- Minor improvements and update to the chi core library

- Introduced a brand new `chi/render` sub-package to complete the story of building

  APIs to offer a pattern for managing well-defined request / response payloads. Please

  check out the updated `_examples/rest` example for how it works.

- Added `MethodNotAllowed(h http.HandlerFunc)` to chi.Router interface

## v2.0.0 (2017-01-06)

- After many months of v2 being in an RC state with many companies and users running it in

  production, the inclusion of some improvements to the middlewares, we are very pleased to

  announce v2.0.0 of chi.

## v2.0.0-rc1 (2016-07-26)

- Huge update! chi v2 is a large refactor targetting Go 1.7+. As of Go 1.7, the popular

  community `"net/context"` package has been included in the standard library as `"context"` and

  utilized by `"net/http"` and `http.Request` to managing deadlines, cancelation signals and other

  request-scoped values. We're very excited about the new context addition and are proud to

  introduce chi v2, a minimal and powerful routing package for building large HTTP services,

  with zero external dependencies. Chi focuses on idiomatic design and encourages the use of 

  stdlib HTTP handlers and middlwares.

- chi v2 deprecates its `chi.Handler` interface and requires `http.Handler` or `http.HandlerFunc`

- chi v2 stores URL routing parameters and patterns in the standard request context: `r.Context()`

- chi v2 lower-level routing context is accessible by `chi.RouteContext(r.Context()) *chi.Context`,

  which provides direct access to URL routing parameters, the routing path and the matching

  routing patterns.

- Users upgrading from chi v1 to v2, need to:

  1. Update the old chi.Handler signature, `func(ctx context.Context, w http.ResponseWriter, r *http.Request)` to

     the standard http.Handler: `func(w http.ResponseWriter, r *http.Request)`

  2. Use `chi.URLParam(r *http.Request, paramKey string) string`

     or `URLParamFromCtx(ctx context.Context, paramKey string) string` to access a url parameter value

## v1.0.0 (2016-07-01)

- Released chi v1 stable https://github.com/go-chi/chi/tree/v1.0.0 for Go 1.6 and older.

## v0.9.0 (2016-03-31)

- Reuse context objects via sync.Pool for zero-allocation routing [#33](https://github.com/go-chi/chi/pull/33)

- BREAKING NOTE: due to subtle API changes, previously `chi.URLParams(ctx)["id"]` used to access url parameters

  has changed to: `chi.URLParam(ctx, "id")`