[The latest version of this document is on GitHub.](https://github.com/haskell-servant/servant/blob/master/servant-client/CHANGELOG.md)
[Changelog for `servant` package contains significant entries for all core packages.](https://github.com/haskell-servant/servant/blob/master/servant/CHANGELOG.md)
0.16
----
- Rename `ServantError` to `ClientError`, `ServantErr` to `ServerError`
[#1131](https://github.com/haskell-servant/servant/pull/1131)
- *servant-client-core* Rearrange modules. No more `Internal` modules, whole
API is versioned.
[#1130](https://github.com/haskell-servant/servant/pull/1130)
- *servant-client-core* `RequestBody` is now
```haskell
= RequestBodyLBS LBS.ByteString
| RequestBodyBS BS.ByteString
| RequestBodySource (SourceIO LBS.ByteString)
```
i.e. no more replicates `http-client`s API.
[#1117](https://github.com/haskell-servant/servant/pull/1117)
- *servant-client-core* Keep structured exceptions in `ConnectionError`
constructor of `ClientError`
[#1115](https://github.com/haskell-servant/servant/pull/1115)
```diff
-| ConnectionError Text
+| ConnectionError SomeException
```
- *servant-client-core* Preserve failing request in `FailureResponse`
constructor of `ClientError`
[#1114](https://github.com/haskell-servant/servant/pull/1114)
```diff
-FailureResponse Response
+-- | The server returned an error response including the
+-- failing request. 'requestPath' includes the 'BaseUrl' and the
+-- path of the request.
+FailureResponse (RequestF () (BaseUrl, BS.ByteString)) Response
```
- *servant-client* Fix (implement) `StreamBody` instance
[#1110](https://github.com/haskell-servant/servant/pull/1110)
- *servant-client* Update CookieJar with intermediate request/responses (redirects)
[#1104](https://github.com/haskell-servant/servant/pull/1104)
0.15
----
- Streaming refactoring.
[#991](https://github.com/haskell-servant/servant/pull/991)
[#1076](https://github.com/haskell-servant/servant/pull/1076)
[#1077](https://github.com/haskell-servant/servant/pull/1077)
The streaming functionality (`Servant.API.Stream`) is refactored to use
`servant`'s own `SourceIO` type (see `Servant.Types.SourceT` documentation),
which replaces both `StreamGenerator` and `ResultStream` types.
New conversion type-classes are `ToSourceIO` and `FromSourceIO`
(replacing `ToStreamGenerator` and `BuildFromStream`).
There are instances for *conduit*, *pipes* and *machines* in new packages:
[servant-conduit](https://hackage.haskell.org/package/servant-conduit)
[servant-pipes](https://hackage.haskell.org/package/servant-pipes) and
[servant-machines](https://hackage.haskell.org/package/servant-machines)
respectively.
Writing new framing strategies is simpler. Check existing strategies for examples.
This change shouldn't affect you, if you don't use streaming endpoints.
- *servant-client* Separate streaming client.
[#1066](https://github.com/haskell-servant/servant/pull/1066)
We now have two `http-client` based clients,
in `Servant.Client` and `Servant.Client.Streaming`.
Their API is the same, except for
- `Servant.Client` **cannot** request `Stream` endpoints.
- `Servant.Client` is *run* by direct
`runClientM :: ClientM a -> ClientEnv -> IO (Either ServantError a)`
- `Servant.Client.Streaming` **can** request `Stream` endpoints.
- `Servant.Client.Streaming` is *used* by CPSised
`withClientM :: ClientM a -> ClientEnv -> (Either ServantError a -> IO b) -> IO b`
To access `Stream` endpoints use `Servant.Client.Streaming` with
`withClientM`; otherwise you can continue using `Servant.Client` with `runClientM`.
You can use both too, `ClientEnv` and `BaseUrl` types are same for both.
**Note:** `Servant.Client.Streaming` doesn't *stream* non-`Stream` endpoints.
Requesting ordinary `Verb` endpoints (e.g. `Get`) will block until
the whole response is received.
There is `Servant.Client.Streaming.runClientM` function, but it has
restricted type. `NFData a` constraint prevents using it with
`SourceT`, `Conduit` etc. response types.
```haskell
runClientM :: NFData a => ClientM a -> ClientEnv -> IO (Either ServantError a)
```
This change shouldn't affect you, if you don't use streaming endpoints.
- Drop support for GHC older than 8.0
[#1008](https://github.com/haskell-servant/servant/pull/1008)
[#1009](https://github.com/haskell-servant/servant/pull/1009)
- *servant-client-core* Add `NFData (GenResponse a)` and `NFData ServantError` instances.
[#1076](https://github.com/haskell-servant/servant/pull/1076)
*servant-client-core* Add `aeson` and `Lift BaseUrl` instances
[#1037](https://github.com/haskell-servant/servant/pull/1037)
0.14
----
- `Stream` takes a status code argument
```diff
-Stream method framing ctype a
+Stream method status framing ctype a
```
([#966](https://github.com/haskell-servant/servant/pull/966)
[#972](https://github.com/haskell-servant/servant/pull/972))
- `ToStreamGenerator` definition changed, so it's possible to write an instance
for conduits.
```diff
-class ToStreamGenerator f a where
- toStreamGenerator :: f a -> StreamGenerator a
+class ToStreamGenerator a b | a -> b where
+ toStreamGenerator :: a -> StreamGenerator b
```
([#959](https://github.com/haskell-servant/servant/pull/959))
- Added `NoFraming` streaming strategy
([#959](https://github.com/haskell-servant/servant/pull/959))
- *servant-client-core* Add `hoistClient` to `HasClient`.
Just like `hoistServer` allows us to change the monad in which request handlers
of a web application live in, we also have `hoistClient` for changing the monad
in which *client functions* live.
Read [tutorial section for more information](https://haskell-servant.readthedocs.io/en/release-0.14/tutorial/Client.html#changing-the-monad-the-client-functions-live-in).
([#936](https://github.com/haskell-servant/servant/pull/936))
- *servant-client* Add more constructors to `RequestBody`, including
`RequestBodyStream`.
*Note:* we are looking for http-library agnostic API,
so the might change again soon.
Tell us which constructors are useful for you!
([#913](https://github.com/haskell-servant/servant/pull/913))
0.13.0.1
--------
- Support `base-compat-0.10`
0.13
----
- Streaming endpoint support.
([#836](https://github.com/haskell-servant/servant/pull/836))
- *servant* Add `Servant.API.Modifiers`
([#873](https://github.com/haskell-servant/servant/pull/873))
- *servant-client* Support `http-client`’s `CookieJar`
([#897](https://github.com/haskell-servant/servant/pull/897)
[#883](https://github.com/haskell-servant/servant/pull/883))
0.12.0.1
--------
- Send `Accept` header.
([#858](https://github.com/haskell-servant/servant/issues/858))
0.12
----
- Factored out into `servant-client-core` all the functionality that was
independent of the `http-client` backend.
0.11
----
### Other changes
- Path components are escaped
([#696](https://github.com/haskell-servant/servant/pull/696))
- `Req` `reqPath` field changed from `String` to `BS.Builder`
([#696](https://github.com/haskell-servant/servant/pull/696))
- Include `Req` in failure errors
([#740](https://github.com/haskell-servant/servant/pull/740))
0.10
-----
### Breaking changes
There shouldn't be breaking changes. Released as a part of `servant` suite.
### Other changes
* Add MonadBase and MonadBaseControl instances for ClientM
([#663](https://github.com/haskell-servant/servant/issues/663))
* client asks for any content-type in Accept contentTypes non-empty list
([#615](https://github.com/haskell-servant/servant/pull/615))
* Add `ClientLike` class that matches client functions generated using `client`
with client data structure.
([#640](https://github.com/haskell-servant/servant/pull/640))
* Allow direct use of 'RequestBody'
([#661](https://github.com/haskell-servant/servant/pull/661))
0.9.1.1
-------
* Add MonadThrow and MonadCatch instances for ClientM
0.9
---
* BACKWARDS INCOMPATIBLE: `client` now returns a ClientM which is a Reader for
BasicEnv. BasicEnv comprises the HttpManager and BaseUrl that have had to be
passed to each method returned by `client`.
0.7.1
-----
* Support GHC 8.0
* `ServantError` has an `Eq` instance now.
0.6
---
* `client` no longer takes `BaseUrl` and `Manager` arguments. Instead, each function returned by `client` requires these two arguments.
0.5
---
* Use the `text` package instead of `String`.
* Support for the `HttpVersion`, `IsSecure`, `RemoteHost` and `Vault` combinators
* Added support for `path` on `BaseUrl`.
* `client` now takes an explicit `Manager` argument.
* Use `http-api-data` instead of `Servant.Common.Text`
* Client functions now consider any 2xx successful.
* Remove matrix params.
* Added support for Basic authentication
* Add generalized authentication support via the `AuthClientData` type family and
`AuthenticateReq` data type
0.4.1
-----
* The `HasClient` instance for `Delete cts ()` now does not care at all about content types provided.
0.4
---
* `Delete` now is like `Get`, `Post`, `Put`, and `Patch` and returns a response body
* Support content-type aware combinators and `Accept`/`Content-type` headers
* Added a lot of tests
* Support multiple concurrent threads
* Use `ServantError` to report Errors instead of `String`
* Make the clients for `Raw` endpoints return the whole `Response` value (to be able to access response headers for example)
* Support for PATCH
* Make () instances expect No Content status code, and not try to decode body.
* Add support for response headers
0.2.2
-----
* Add TLS support
* Add matrix parameter support