@@ -1,6 +1,16 @@
1+{-# LANGUAGE DataKinds #-}
2+{-# LANGUAGE LambdaCase #-}
3+{-# LANGUAGE OverloadedStrings #-}
4+{-# LANGUAGE QuasiQuotes #-}
5+{-# LANGUAGE RecordWildCards #-}
6+{-# LANGUAGE RoleAnnotations #-}
7+{-# LANGUAGE TemplateHaskellQuotes #-}
8+{-# LANGUAGE TypeFamilies #-}
9+{-# LANGUAGE UndecidableInstances #-}
2-- Module : Network.HTTP.Req
12-- Module : Network.HTTP.Req
3−-- Copyright : © 2016–2019 Mark Karpov
13+-- Copyright : © 2016–present Mark Karpov
4-- License : BSD 3 clause
14-- License : BSD 3 clause
6-- Maintainer : Mark Karpov <markkarpov92@gmail.com>
16-- Maintainer : Mark Karpov <markkarpov92@gmail.com>
@@ -9,61 +19,40 @@
10-- The documentation below is structured in such a way that the most
20-- The documentation below is structured in such a way that the most
11-- important information is presented first: you learn how to do HTTP
21-- important information is presented first: you learn how to do HTTP
12−-- requests, how to embed them in any monad you have, and then it gives you
22+-- requests, how to embed them in the monad you have, and then it gives you
13-- details about less-common things you may want to know about. The
23-- details about less-common things you may want to know about. The
14-- documentation is written with sufficient coverage of details and
24-- documentation is written with sufficient coverage of details and
15-- examples, and it's designed to be a complete tutorial on its own.
25-- examples, and it's designed to be a complete tutorial on its own.
17−-- /(A modest intro goes here, click on 'req' to start making requests.)/
19-- === About the library
27-- === About the library
21−-- Req is an easy-to-use, type-safe, expandable, high-level HTTP client
29+-- Req is an HTTP client library that attempts to be easy-to-use, type-safe,
22−-- library that just works without any fooling around.
30+-- and expandable.
24−-- What does the phrase “easy-to-use” mean? It means that the library is
32+-- “Easy-to-use” means that the library is designed to be beginner-friendly
25−-- designed to be beginner-friendly so it's simple to add to your monad
33+-- so it's simple to add to your monad stack, intuitive to work with,
26−-- stack, intuitive to work with, well-documented, and does not get in your
34+-- well-documented, and does not get in your way. Doing HTTP requests is a
27−-- way. Doing HTTP requests is a common task and Haskell library for this
35+-- common task and a Haskell library for this should be approachable and
28−-- should be very approachable and clear to beginners, thus certain
29−-- compromises were made. For example, one cannot currently modify
36+-- clear to beginners, thus certain compromises were made. For example, one
30−-- 'L.ManagerSettings' of the default manager because the library always
37+-- cannot currently modify 'L.ManagerSettings' of the default manager
31−-- uses the same implicit global manager for simplicity and maximal
38+-- because the library always uses the same implicit global manager for
32−-- connection sharing. There is a way to use your own manager with different
39+-- simplicity and maximal connection sharing. There is a way to use your own
33−-- settings, but it requires a bit more typing.
40+-- manager with different settings, but it requires more typing.
35−-- “Type-safe” means that the library is protective and eliminates certain
42+-- “Type-safe” means that the library tries to eliminate certain classes of
36−-- classes of errors. For example, we have correct-by-construction 'Url's,
43+-- errors. For example, we have correct-by-construction URLs; it is
37−-- it's guaranteed that the user does not send the request body when using
44+-- guaranteed that the user does not send the request body when using
38−-- methods like 'GET' or 'OPTIONS', and the amount of implicit assumptions
45+-- methods like GET or OPTIONS, and the amount of implicit assumptions is
39−-- is minimized by making the user specify his\/her intentions in an
46+-- minimized by making the user specify their intentions in an explicit
40−-- explicit form (for example, it's not possible to avoid specifying the
47+-- form. For example, it's not possible to avoid specifying the body or the
41−-- body or method of request). Authentication methods that assume HTTPS
48+-- method of a request. Authentication methods that assume HTTPS force the
42−-- force the user to use HTTPS at the type level. The library also carefully
49+-- user to use HTTPS at the type level.
43−-- hides underlying types from the lower-level @http-client@ package because
44−-- those types are not safe enough (for example 'L.Request' is an instance
45−-- of 'Data.String.IsString' and, if it's malformed, it will blow up at
48−-- “Expandable” refers to the ability of the library to be expanded without
51+-- “Expandable” refers to the ability to create new components without
49−-- having to resort to ugly hacking. For example, it's possible to define
52+-- having to resort to hacking. For example, it's possible to define your
50−-- your own HTTP methods, create new ways to construct the body of a
53+-- own HTTP methods, create new ways to construct the body of a request,
51−-- request, create new authorization options, perform a request in a
54+-- create new authorization options, perform a request in a different way,
52−-- different way, and create your own methods to parse and represent a
55+-- and create your own methods to parse a response.
53−-- response. As the user extends the library to satisfy his\/her special
54−-- needs, the new solutions will work just like the built-ins. However, all
55−-- of the common cases are also covered by the library out-of-the-box.
57−-- “High-level” means that there are less details to worry about. The
58−-- library is a result of my experiences as a Haskell consultant. Working
59−-- for several clients, who had very different projects, showed me that the
60−-- library should adapt easily to any particular style of writing Haskell
61−-- applications. For example, some people prefer throwing exceptions, while
62−-- others are concerned with purity. Just define 'handleHttpException'
63−-- accordingly when making your monad instance of 'MonadHttp' and it will
64−-- play together seamlessly. Finally, the library cuts down boilerplate
65−-- considerably, and helps you write concise, easy to read, and maintainable
68-- === Using with other libraries
57-- === Using with other libraries
@@ -87,181 +76,200 @@
87-- the whole Haskell ecosystem uses, there is no risk in using @req@. The
76-- the whole Haskell ecosystem uses, there is no risk in using @req@. The
88-- machinery for performing requests is the same as with @http-conduit@ and
77-- machinery for performing requests is the same as with @http-conduit@ and
89-- @wreq@. The only difference is the API.
78-- @wreq@. The only difference is the API.
91−{-# LANGUAGE BangPatterns #-}
93−{-# LANGUAGE DataKinds #-}
94−{-# LANGUAGE DeriveDataTypeable #-}
95−{-# LANGUAGE DeriveGeneric #-}
96−{-# LANGUAGE FlexibleInstances #-}
97−{-# LANGUAGE GeneralizedNewtypeDeriving #-}
98−{-# LANGUAGE KindSignatures #-}
99−{-# LANGUAGE MultiParamTypeClasses #-}
100−{-# LANGUAGE OverloadedStrings #-}
101−{-# LANGUAGE RankNTypes #-}
102−{-# LANGUAGE RecordWildCards #-}
103−{-# LANGUAGE ScopedTypeVariables #-}
104−{-# LANGUAGE TypeFamilies #-}
106−#if MIN_VERSION_base(4,9,0)
107−{-# LANGUAGE UndecidableInstances #-}
110−#if __GLASGOW_HASKELL__ >= 800
111−{-# OPTIONS_GHC -fno-warn-redundant-constraints #-}
114module Network.HTTP.Req
79module Network.HTTP.Req
115 ( -- * Making a request
80 ( -- * Making a request
116 -- $making-a-request
81 -- $making-a-request
120− , withReqManager
86+ withReqManager,
121 -- * Embedding requests in your monad
88 -- * Embedding requests in your monad
122 -- $embedding-requests
89 -- $embedding-requests
123− , MonadHttp (..)
90+ MonadHttp (..),
124− , HttpConfig (..)
91+ HttpConfig (..),
125− , defaultHttpConfig
92+ defaultHttpConfig,
128 -- * Request
96 -- * Request
129 -- ** Method
98 -- ** Method
130 -- $method
99 -- $method
131− , GET (..)
100+ GET (..),
132− , POST (..)
101+ POST (..),
133− , HEAD (..)
102+ HEAD (..),
134− , PUT (..)
103+ PUT (..),
135− , DELETE (..)
104+ DELETE (..),
136− , TRACE (..)
105+ TRACE (..),
137− , CONNECT (..)
106+ CONNECT (..),
138− , OPTIONS (..)
107+ OPTIONS (..),
139− , PATCH (..)
108+ PATCH (..),
140− , HttpMethod (..)
109+ HttpMethod (..),
141 -- ** URL
111 -- ** URL
148− , parseUrlHttp
118+ useHttpURI,
149− , parseUrlHttps
119+ useHttpsURI,
150− , parseUrl
120+ useURI,
151 -- ** Body
124 -- ** Body
153− , NoReqBody (..)
126+ NoReqBody (..),
154− , ReqBodyJson (..)
127+ ReqBodyJson (..),
155− , ReqBodyFile (..)
128+ ReqBodyFile (..),
156− , ReqBodyBs (..)
129+ ReqBodyBs (..),
157− , ReqBodyLbs (..)
130+ ReqBodyLbs (..),
158− , ReqBodyUrlEnc (..)
131+ ReqBodyUrlEnc (..),
159− , FormUrlEncodedParam
132+ FormUrlEncodedParam,
160− , ReqBodyMultipart
133+ ReqBodyMultipart,
161− , reqBodyMultipart
134+ reqBodyMultipart,
162− , HttpBody (..)
135+ HttpBody (..),
163− , ProvidesBody
136+ ProvidesBody,
164− , HttpBodyAllowed
137+ HttpBodyAllowed,
165 -- ** Optional parameters
139 -- ** Optional parameters
166 -- $optional-parameters
140 -- $optional-parameters
167− , Option
141+ Option,
168 -- *** Query parameters
143 -- *** Query parameters
169 -- $query-parameters
144 -- $query-parameters
171− , queryFlag
146+ queryFlag,
172− , QueryParam (..)
148+ QueryParam (..),
173 -- *** Headers
150 -- *** Headers
174− , header
151+ header,
175− , attachHeader
152+ attachHeader,
176 -- *** Cookies
155 -- *** Cookies
177 -- $cookies
156 -- $cookies
178− , cookieJar
157+ cookieJar,
179 -- *** Authentication
159 -- *** Authentication
180 -- $authentication
160 -- $authentication
181− , basicAuth
161+ basicAuth,
182− , basicAuthUnsafe
162+ basicAuthUnsafe,
183− , basicProxyAuth
163+ basicProxyAuth,
184− , oAuth1
164+ oAuth1,
185− , oAuth2Bearer
165+ oAuth2Bearer,
186− , oAuth2Token
166+ oAuth2Token,
187− , customAuth
167+ customAuth,
188 -- *** Other
169 -- *** Other
190− , decompress
171+ decompress,
191− , responseTimeout
172+ responseTimeout,
192− , httpVersion
173+ httpVersion,
193 -- * Response
175 -- * Response
194 -- ** Response interpretations
177 -- ** Response interpretations
195− , IgnoreResponse
178+ IgnoreResponse,
196− , ignoreResponse
179+ ignoreResponse,
197− , JsonResponse
180+ JsonResponse,
198− , jsonResponse
181+ jsonResponse,
199− , BsResponse
182+ BsResponse,
200− , bsResponse
183+ bsResponse,
201− , LbsResponse
184+ LbsResponse,
202− , lbsResponse
185+ lbsResponse,
203 -- ** Inspecting a response
187 -- ** Inspecting a response
204− , responseBody
188+ responseBody,
205− , responseStatusCode
189+ responseStatusCode,
206− , responseStatusMessage
190+ responseStatusMessage,
207− , responseHeader
191+ responseHeader,
208− , responseCookieJar
192+ responseCookieJar,
209 -- ** Defining your own interpretation
194 -- ** Defining your own interpretation
210 -- $new-response-interpretation
195 -- $new-response-interpretation
211− , HttpResponse (..)
196+ HttpResponse (..),
212 -- * Other
198 -- * Other
213− , HttpException (..)
199+ HttpException (..),
200+ isStatusCodeException,
214− , CanHaveBody (..)
201+ CanHaveBody (..),
215− , Scheme (..) )
202+ Scheme (..),
206+import Blaze.ByteString.Builder qualified as BB
218import Control.Applicative
207import Control.Applicative
219import Control.Arrow (first, second)
208import Control.Arrow (first, second)
209+import Control.Exception hiding (Handler (..), TypeError)
210+import Control.Monad (guard, void, (>=>))
220import Control.Monad.Base
211import Control.Monad.Base
212+import Control.Monad.Catch (Handler (..), MonadCatch, MonadMask, MonadThrow)
221import Control.Monad.IO.Class
213import Control.Monad.IO.Class
222−import Control.Monad.Reader
214+import Control.Monad.IO.Unlift
215+import Control.Monad.Reader (ReaderT (ReaderT), ask, lift, runReaderT)
216+import Control.Monad.Trans.Accum (AccumT)
217+import Control.Monad.Trans.Cont (ContT)
223import Control.Monad.Trans.Control
218import Control.Monad.Trans.Control
219+import Control.Monad.Trans.Except (ExceptT)
220+import Control.Monad.Trans.Identity (IdentityT)
221+import Control.Monad.Trans.Maybe (MaybeT)
222+import Control.Monad.Trans.RWS.CPS qualified as RWS.CPS
223+import Control.Monad.Trans.RWS.Lazy qualified as RWS.Lazy
224+import Control.Monad.Trans.RWS.Strict qualified as RWS.Strict
225+import Control.Monad.Trans.Select (SelectT)
226+import Control.Monad.Trans.State.Lazy qualified as State.Lazy
227+import Control.Monad.Trans.State.Strict qualified as State.Strict
228+import Control.Monad.Trans.Writer.CPS qualified as Writer.CPS
229+import Control.Monad.Trans.Writer.Lazy qualified as Writer.Lazy
230+import Control.Monad.Trans.Writer.Strict qualified as Writer.Strict
224import Control.Retry
231import Control.Retry
225−import Data.Aeson (ToJSON (..), FromJSON (..))
232+import Data.Aeson (FromJSON (..), ToJSON (..))
233+import Data.Aeson qualified as A
226import Data.ByteString (ByteString)
234import Data.ByteString (ByteString)
235+import Data.ByteString qualified as B
236+import Data.ByteString.Lazy qualified as BL
237+import Data.CaseInsensitive qualified as CI
227import Data.Data (Data)
238import Data.Data (Data)
239+import Data.Default.Class (def)
228import Data.Function (on)
240import Data.Function (on)
229import Data.IORef
241import Data.IORef
230−import Data.List (nubBy)
242+import Data.Kind (Constraint, Type)
243+import Data.List (foldl', nubBy)
231import Data.List.NonEmpty (NonEmpty (..))
244import Data.List.NonEmpty (NonEmpty (..))
245+import Data.List.NonEmpty qualified as NE
232import Data.Maybe (fromMaybe)
246import Data.Maybe (fromMaybe)
233import Data.Proxy
247import Data.Proxy
234−import Data.Semigroup hiding (Option, option)
248+import Data.Semigroup (Endo (..))
249+import Data.Set qualified as S
235import Data.Text (Text)
250import Data.Text (Text)
251+import Data.Text qualified as T
252+import Data.Text.Encoding qualified as T
236−import Data.Typeable (Typeable)
253+import Data.Typeable (Typeable, cast)
237import GHC.Generics
254import GHC.Generics
238import GHC.TypeLits
255import GHC.TypeLits
256+import Language.Haskell.TH qualified as TH
257+import Language.Haskell.TH.Quote qualified as TH
258+import Language.Haskell.TH.Syntax qualified as TH
259+import Network.Connection qualified as NC
260+import Network.HTTP.Client qualified as L
261+import Network.HTTP.Client.Internal qualified as LI
262+import Network.HTTP.Client.MultipartFormData qualified as LM
263+import Network.HTTP.Client.TLS qualified as L
264+import Network.HTTP.Types qualified as Y
239import System.IO.Unsafe (unsafePerformIO)
265import System.IO.Unsafe (unsafePerformIO)
266+import Text.URI (URI)
267+import Text.URI qualified as URI
268+import Text.URI.QQ qualified as QQ
269+import Web.Authenticate.OAuth qualified as OAuth
270+import Web.FormUrlEncoded (FromForm (..), ToForm (..))
271+import Web.FormUrlEncoded qualified as Form
240import Web.HttpApiData (ToHttpApiData (..))
272import Web.HttpApiData (ToHttpApiData (..))
241−import qualified Blaze.ByteString.Builder as BB
242−import qualified Data.Aeson as A
243−import qualified Data.ByteString as B
244−import qualified Data.ByteString.Lazy as BL
245−import qualified Data.CaseInsensitive as CI
246−import qualified Data.List.NonEmpty as NE
247−import qualified Data.Text as T
248−import qualified Data.Text.Encoding as T
249−import qualified Data.Text.Read as TR
250−import qualified Network.Connection as NC
251−import qualified Network.HTTP.Client as L
252−import qualified Network.HTTP.Client.Internal as LI
253−import qualified Network.HTTP.Client.MultipartFormData as LM
254−import qualified Network.HTTP.Client.TLS as L
255−import qualified Network.HTTP.Types as Y
256−import qualified Web.Authenticate.OAuth as OAuth
258−#if MIN_VERSION_base(4,9,0)
259−import Control.Exception hiding (TypeError)
260−import Data.Kind (Constraint)
262−import Control.Exception
263−import GHC.Exts (Constraint)
266----------------------------------------------------------------------------
274----------------------------------------------------------------------------
267-- Making a request
275-- Making a request
@@ -285,7 +293,7 @@ import GHC.Exts (Constraint)
286-- @body@ is a body option such as 'NoReqBody' or 'ReqBodyJson'. The
294-- @body@ is a body option such as 'NoReqBody' or 'ReqBodyJson'. The
287-- tutorial has a section about HTTP bodies, but usage is very
295-- tutorial has a section about HTTP bodies, but usage is very
288−-- straightforward and should be clear from the examples below.
296+-- straightforward and should be clear from the examples.
290-- @response@ is a type hint how to make and interpret response of an HTTP
298-- @response@ is a type hint how to make and interpret response of an HTTP
291-- request. Out-of-the-box it can be the following:
299-- request. Out-of-the-box it can be the following:
@@ -311,6 +319,7 @@ import GHC.Exts (Constraint)
311-- First, this is a piece of boilerplate that should be in place before you
319-- First, this is a piece of boilerplate that should be in place before you
312-- try the examples:
320-- try the examples:
322+-- > {-# LANGUAGE DeriveGeneric #-}
314-- > {-# LANGUAGE OverloadedStrings #-}
323-- > {-# LANGUAGE OverloadedStrings #-}
316-- > module Main (main) where
325-- > module Main (main) where
@@ -324,6 +333,7 @@ import GHC.Exts (Constraint)
324-- > import GHC.Generics
333-- > import GHC.Generics
325-- > import Network.HTTP.Req
334-- > import Network.HTTP.Req
326-- > import qualified Data.ByteString.Char8 as B
335-- > import qualified Data.ByteString.Char8 as B
336+-- > import qualified Text.URI as URI
328-- We will be making requests against the <https://httpbin.org> service.
338-- We will be making requests against the <https://httpbin.org> service.
@@ -382,7 +392,8 @@ import GHC.Exts (Constraint)
382-- > main = runReq defaultHttpConfig $ do
392-- > main = runReq defaultHttpConfig $ do
383-- > -- This is an example of what to do when URL is given dynamically. Of
393-- > -- This is an example of what to do when URL is given dynamically. Of
384-- > -- course in a real application you may not want to use 'fromJust'.
394-- > -- course in a real application you may not want to use 'fromJust'.
385−-- > let (url, options) = fromJust (parseUrlHttps "https://httpbin.org/get?foo=bar")
395+-- > uri <- URI.mkURI "https://httpbin.org/get?foo=bar"
396+-- > let (url, options) = fromJust (useHttpsURI uri)
386-- > response <- req GET url NoReqBody jsonResponse $
397-- > response <- req GET url NoReqBody jsonResponse $
387-- > "from" =: (15 :: Int) <>
398-- > "from" =: (15 :: Int) <>
388-- > "to" =: (67 :: Int) <>
399-- > "to" =: (67 :: Int) <>
@@ -390,60 +401,138 @@ import GHC.Exts (Constraint)
390-- > options <> -- contains the ?foo=bar part
401-- > options <> -- contains the ?foo=bar part
391-- > port 443 -- here you can put any port of course
402-- > port 443 -- here you can put any port of course
392-- > liftIO $ print (responseBody response :: Value)
403-- > liftIO $ print (responseBody response :: Value)
395− :: ( MonadHttp m
405+ ( MonadHttp m,
396− , HttpMethod method
406+ HttpMethod method,
397− , HttpBody body
407+ HttpBody body,
398− , HttpResponse response
408+ HttpResponse response,
399− , HttpBodyAllowed (AllowsBody method) (ProvidesBody body) )
409+ HttpBodyAllowed (AllowsBody method) (ProvidesBody body)
400− => method -- ^ HTTP method
411+ -- | HTTP method
401− -> Url scheme -- ^ 'Url'—location of resource
413+ -- | 'Url'—location of resource
402− -> body -- ^ Body of the request
415+ -- | Body of the request
403− -> Proxy response -- ^ A hint how to interpret response
417+ -- | A hint how to interpret response
404− -> Option scheme -- ^ Collection of optional parameters
419+ -- | Collection of optional parameters
405− -> m response -- ^ Response
421+ -- | Response
406−req method url body Proxy options =
423+req method url body responseProxy options =
407− reqBr method url body options getHttpResponse
424+ reqCb method url body responseProxy options pure
409-- | A version of 'req' that does not use one of the predefined instances of
426-- | A version of 'req' that does not use one of the predefined instances of
410-- 'HttpResponse' but instead allows the user to consume @'L.Response'
427-- 'HttpResponse' but instead allows the user to consume @'L.Response'
411-- 'L.BodyReader'@ manually, in a custom way.
428-- 'L.BodyReader'@ manually, in a custom way.
413-- @since 1.0.0
430-- @since 1.0.0
416− :: ( MonadHttp m
432+ ( MonadHttp m,
417− , HttpMethod method
433+ HttpMethod method,
418− , HttpBody body
434+ HttpBody body,
419− , HttpBodyAllowed (AllowsBody method) (ProvidesBody body) )
435+ HttpBodyAllowed (AllowsBody method) (ProvidesBody body)
420− => method -- ^ HTTP method
437+ -- | HTTP method
421− -> Url scheme -- ^ 'Url'—location of resource
439+ -- | 'Url'—location of resource
422− -> body -- ^ Body of the request
441+ -- | Body of the request
423− -> Option scheme -- ^ Collection of optional parameters
443+ -- | Collection of optional parameters
445+ -- | How to consume response
424− -> (L.Response L.BodyReader -> IO a) -- ^ How to consume response
446+ (L.Response L.BodyReader -> IO a) ->
425− -> m a -- ^ Result
447+ -- | Result
449+reqBr method url body options consume =
450+ req' method url body options (reqHandler consume)
452+-- | A version of 'req' that takes a callback to modify the 'L.Request', but
453+-- otherwise performs the request identically.
460+ HttpResponse response,
461+ HttpBodyAllowed (AllowsBody method) (ProvidesBody body)
465+ -- | 'Url'—location of resource
467+ -- | Body of the request
469+ -- | A hint how to interpret response
471+ -- | Collection of optional parameters
473+ -- | Callback to modify the request
474+ (L.Request -> m L.Request) ->
477+reqCb method url body responseProxy options adjustRequest =
426−reqBr method url body options consume = req' method url body options $ \request manager -> do
478+ req' method url body (options <> extraOptions) $ \request manager -> do
479+ request' <- adjustRequest request
480+ reqHandler getHttpResponse request' manager
483+ case acceptHeader responseProxy of
485+ Just accept -> header "Accept" accept
487+-- | The default handler function that the higher-level request functions
488+-- pass to 'req''. Internal function.
493+ -- | How to get final result from a 'L.Response'
494+ (L.Response L.BodyReader -> IO b) ->
495+ -- | 'L.Request' to perform
497+ -- | 'L.Manager' to use
500+reqHandler consume request manager = do
427− HttpConfig {..} <- getHttpConfig
501+ HttpConfig {..} <- getHttpConfig
428 let wrapVanilla = handle (throwIO . VanillaHttpException)
502 let wrapVanilla = handle (throwIO . VanillaHttpException)
429− wrapExc = handle (throwIO . LI.toHttpException request)
503+ wrapExc = handle (throwIO . LI.toHttpException request)
430− withRRef = bracket
504+ withRRef =
431− (newIORef Nothing)
506+ (newIORef Nothing)
432− (readIORef >=> mapM_ L.responseClose)
507+ (readIORef >=> mapM_ L.responseClose)
433− (liftIO . try . wrapVanilla . wrapExc) (withRRef $ \rref -> do
508+ (liftIO . try . wrapVanilla . wrapExc)
509+ ( withRRef $ \rref -> do
434− let openResponse = mask_ $ do
510+ let openResponse = mask_ $ do
435− r <- readIORef rref
511+ r <- readIORef rref
436− mapM_ L.responseClose r
512+ mapM_ L.responseClose r
437− r' <- L.responseOpen request manager
513+ r' <- L.responseOpen request manager
438− writeIORef rref (Just r')
514+ writeIORef rref (Just r')
439− return r'
515+ return r'
516+ exceptionRetryPolicies =
518+ ++ [ \retryStatus -> Handler $ \e ->
519+ return $ httpConfigRetryJudgeException retryStatus e
440− r <- retrying
522+ retrying
441− httpConfigRetryPolicy
523+ httpConfigRetryPolicy
442− (\st r -> return $ httpConfigRetryJudge st r)
524+ (\retryStatus r -> return $ httpConfigRetryJudge retryStatus r)
527+ httpConfigRetryPolicy
528+ exceptionRetryPolicies
443− (const openResponse)
529+ (const openResponse)
444− (preview, r') <- grabPreview bodyPreviewLength r
532+ (preview, r') <- grabPreview httpConfigBodyPreviewLength r
445− mapM_ LI.throwHttp (httpConfigCheckResponse request r' preview)
533+ mapM_ LI.throwHttp (httpConfigCheckResponse request r' preview)
446− consume r')
534+ consume r'
447 >>= either handleHttpException return
536 >>= either handleHttpException return
449-- | Mostly like 'req' with respect to its arguments, but accepts a callback
538-- | Mostly like 'req' with respect to its arguments, but accepts a callback
@@ -454,51 +543,57 @@ reqBr method url body options consume = req' method url body options $ \request
454-- 'L.Request' and allows you to use it.
543-- 'L.Request' and allows you to use it.
456-- @since 0.3.0
545-- @since 0.3.0
459− :: forall m method body scheme a.
547+ forall m method body scheme a.
460− ( MonadHttp m
548+ ( MonadHttp m,
461− , HttpMethod method
549+ HttpMethod method,
462− , HttpBody body
550+ HttpBody body,
463− , HttpBodyAllowed (AllowsBody method) (ProvidesBody body) )
551+ HttpBodyAllowed (AllowsBody method) (ProvidesBody body)
464− => method -- ^ HTTP method
553+ -- | HTTP method
465− -> Url scheme -- ^ 'Url'—location of resource
555+ -- | 'Url'—location of resource
466− -> body -- ^ Body of the request
557+ -- | Body of the request
467− -> Option scheme -- ^ Collection of optional parameters
559+ -- | Collection of optional parameters
468− -> (L.Request -> L.Manager -> m a) -- ^ How to perform request
561+ -- | How to perform request
562+ (L.Request -> L.Manager -> m a) ->
469− -> m a -- ^ Result
563+ -- | Result
470req' method url body options m = do
565req' method url body options m = do
471− config@HttpConfig {..} <- getHttpConfig
566+ config <- getHttpConfig
472 let -- NOTE First appearance of any given header wins. This allows to
567 let -- NOTE First appearance of any given header wins. This allows to
473 -- “overwrite” headers when we construct a request by cons-ing.
568 -- “overwrite” headers when we construct a request by cons-ing.
474 nubHeaders = Endo $ \x ->
569 nubHeaders = Endo $ \x ->
475− x { L.requestHeaders = nubBy ((==) `on` fst) (L.requestHeaders x) }
570+ x {L.requestHeaders = nubBy ((==) `on` fst) (L.requestHeaders x)}
476− request' = flip appEndo L.defaultRequest $
572+ flip appEndo L.defaultRequest $
477− -- NOTE The order of 'mappend's matters, here method is overwritten
573+ -- NOTE The order of 'mappend's matters, here method is overwritten
478− -- first and 'options' take effect last. In particular, this means
574+ -- first and 'options' take effect last. In particular, this means
479− -- that 'options' can overwrite things set by other request
575+ -- that 'options' can overwrite things set by other request
480− -- components, which is useful for setting port number,
576+ -- components, which is useful for setting port number,
481− -- "Content-Type" header, etc.
577+ -- "Content-Type" header, etc.
482− nubHeaders <>
578+ nubHeaders
483− getRequestMod options <>
579+ <> getRequestMod options
484− getRequestMod config <>
580+ <> getRequestMod config
485− getRequestMod (Womb body :: Womb "body" body) <>
581+ <> getRequestMod (Tagged body :: Tagged "body" body)
486− getRequestMod url <>
582+ <> getRequestMod url
487− getRequestMod (Womb method :: Womb "method" method)
583+ <> getRequestMod (Tagged method :: Tagged "method" method)
488 request <- finalizeRequest options request'
584 request <- finalizeRequest options request'
489 withReqManager (m request)
585 withReqManager (m request)
491-- | Perform an action using the global implicit 'L.Manager' that the rest
587-- | Perform an action using the global implicit 'L.Manager' that the rest
492−-- of the library uses. This allows to reuse connections that the
588+-- of the library uses. This allows us to reuse connections that the
493-- 'L.Manager' controls.
589-- 'L.Manager' controls.
590+withReqManager :: (MonadIO m) => (L.Manager -> m a) -> m a
591+withReqManager m = m globalManager
495−withReqManager :: MonadIO m => (L.Manager -> m a) -> m a
496−withReqManager m = liftIO (readIORef globalManager) >>= m
498−-- | Global 'L.Manager' that 'req' uses. Here we just go with the default
593+-- | The global 'L.Manager' that 'req' uses. Here we just go with the
499−-- settings, so users don't need to deal with this manager stuff at all, but
594+-- default settings, so users don't need to deal with this manager stuff at
500−-- when we create a request, instance 'HttpConfig' can affect the default
595+-- all, but when we create a request, instance 'HttpConfig' can affect the
501−-- settings via 'getHttpConfig'.
596+-- default settings via 'getHttpConfig'.
503-- A note about safety, in case 'unsafePerformIO' looks suspicious to you.
598-- A note about safety, in case 'unsafePerformIO' looks suspicious to you.
504-- The value of 'globalManager' is named and lives on top level. This means
599-- The value of 'globalManager' is named and lives on top level. This means
@@ -506,16 +601,16 @@ withReqManager m = liftIO (readIORef globalManager) >>= m
506-- manager. From that moment on the 'IORef' will be just reused—exactly the
601-- manager. From that moment on the 'IORef' will be just reused—exactly the
507-- behavior we want here in order to maximize connection sharing. GHC could
602-- behavior we want here in order to maximize connection sharing. GHC could
508-- spoil the plan by inlining the definition, hence the @NOINLINE@ pragma.
603-- spoil the plan by inlining the definition, hence the @NOINLINE@ pragma.
510−globalManager :: IORef L.Manager
604+globalManager :: L.Manager
511globalManager = unsafePerformIO $ do
605globalManager = unsafePerformIO $ do
512 context <- NC.initConnectionContext
606 context <- NC.initConnectionContext
513− let settings = L.mkManagerSettingsContext
608+ L.mkManagerSettingsContext
514− (Just context)
609+ (Just context)
515− (NC.TLSSettingsSimple False False False)
610+ def
517 manager <- L.newManager settings
612 manager <- L.newManager settings
518− newIORef manager
613+ return manager
519{-# NOINLINE globalManager #-}
614{-# NOINLINE globalManager #-}
521----------------------------------------------------------------------------
616----------------------------------------------------------------------------
@@ -529,55 +624,43 @@ globalManager = unsafePerformIO $ do
529-- When writing a library, keep your API polymorphic in terms of
624-- When writing a library, keep your API polymorphic in terms of
530-- 'MonadHttp', only define instance of 'MonadHttp' in final application.
625-- 'MonadHttp', only define instance of 'MonadHttp' in final application.
531-- Another option is to use a @newtype@-wrapped monad stack and define
626-- Another option is to use a @newtype@-wrapped monad stack and define
532−-- 'MonadHttp' for it. As of version /0.4.0/, the 'Req' monad that follows
627+-- 'MonadHttp' for it. As of the version /0.4.0/, the 'Req' monad that
533−-- this strategy is provided out-of-the-box (see below).
628+-- follows this strategy is provided out-of-the-box (see below).
535-- | A type class for monads that support performing HTTP requests.
630-- | A type class for monads that support performing HTTP requests.
536-- Typically, you only need to define the 'handleHttpException' method
631-- Typically, you only need to define the 'handleHttpException' method
537-- unless you want to tweak 'HttpConfig'.
632-- unless you want to tweak 'HttpConfig'.
539−class MonadIO m => MonadHttp m where
633+class (MonadIO m) => MonadHttp m where
541 -- | This method describes how to deal with 'HttpException' that was
634 -- | This method describes how to deal with 'HttpException' that was
542 -- caught by the library. One option is to re-throw it if you are OK with
635 -- caught by the library. One option is to re-throw it if you are OK with
543 -- exceptions, but if you prefer working with something like
636 -- exceptions, but if you prefer working with something like
544 -- 'Control.Monad.Except.MonadError', this is the right place to pass it to
637 -- 'Control.Monad.Except.MonadError', this is the right place to pass it to
545 -- 'Control.Monad.Except.throwError'.
638 -- 'Control.Monad.Except.throwError'.
547 handleHttpException :: HttpException -> m a
639 handleHttpException :: HttpException -> m a
549− -- | Return 'HttpConfig' to be used when performing HTTP requests. Default
641+ -- | Return the 'HttpConfig' to be used when performing HTTP requests.
550− -- implementation returns its 'def' value, which is described in the
642+ -- Default implementation returns its 'def' value, which is described in
551− -- documentation for the type. Common usage pattern with manually defined
643+ -- the documentation for the type. Common usage pattern with manually
552− -- 'getHttpConfig' is to return some hard-coded value, or a value
644+ -- defined 'getHttpConfig' is to return some hard-coded value, or a value
553 -- extracted from 'Control.Monad.Reader.MonadReader' if a more flexible
645 -- extracted from 'Control.Monad.Reader.MonadReader' if a more flexible
554 -- approach to configuration is desirable.
646 -- approach to configuration is desirable.
556 getHttpConfig :: m HttpConfig
647 getHttpConfig :: m HttpConfig
557 getHttpConfig = return defaultHttpConfig
648 getHttpConfig = return defaultHttpConfig
559−-- | 'HttpConfig' contains general and default settings to be used when
650+-- | 'HttpConfig' contains settings to be used when making HTTP requests.
560−-- making HTTP requests.
562data HttpConfig = HttpConfig
651data HttpConfig = HttpConfig
563− { httpConfigProxy :: Maybe L.Proxy
564− -- ^ Proxy to use. By default values of @HTTP_PROXY@ and @HTTPS_PROXY@
652+ { -- | Proxy to use. By default values of @HTTP_PROXY@ and @HTTPS_PROXY@
565 -- environment variables are respected, this setting overwrites them.
653 -- environment variables are respected, this setting overwrites them.
566 -- Default value: 'Nothing'.
654 -- Default value: 'Nothing'.
567− , httpConfigRedirectCount :: Int
655+ httpConfigProxy :: Maybe L.Proxy,
568− -- ^ How many redirects to follow when getting a resource. Default
656+ -- | How many redirects to follow when getting a resource. Default
569 -- value: 10.
657 -- value: 10.
570− , httpConfigAltManager :: Maybe L.Manager
658+ httpConfigRedirectCount :: Int,
571− -- ^ Alternative 'L.Manager' to use. 'Nothing' (default value) means
659+ -- | Alternative 'L.Manager' to use. 'Nothing' (default value) means
572 -- that the default implicit manager will be used (that's what you want
660 -- that the default implicit manager will be used (that's what you want
573 -- in 99% of cases).
661 -- in 99% of cases).
574− , httpConfigCheckResponse
662+ httpConfigAltManager :: Maybe L.Manager,
579− -> Maybe L.HttpExceptionContent
580− -- ^ Function to check the response immediately after receiving the
663+ -- | Function to check the response immediately after receiving the
581 -- status and headers, before streaming of response body. The third
664 -- status and headers, before streaming of response body. The third
582 -- argument is the beginning of response body (typically first 1024
665 -- argument is the beginning of response body (typically first 1024
583 -- bytes). This is used for throwing exceptions on non-success status
666 -- bytes). This is used for throwing exceptions on non-success status
@@ -599,67 +682,106 @@ data HttpConfig = HttpConfig
599 -- /1.0.0/.
682 -- /1.0.0/.
601 -- @since 0.3.0
684 -- @since 0.3.0
602− , httpConfigRetryPolicy :: RetryPolicy
685+ httpConfigCheckResponse ::
690+ Maybe L.HttpExceptionContent,
603− -- ^ The retry policy to use for request retrying. By default 'def' is
691+ -- | The retry policy to use for request retrying. By default 'def' is
604 -- used (see 'RetryPolicyM').
692 -- used (see 'RetryPolicyM').
606− -- __Note__: signature of this function was changed in the version
694+ -- __Note__: signature of this function was changed to disallow 'IO' in
607− -- /1.0.0/.
695+ -- version /1.0.0/ and then changed back to its current form in /3.1.0/.
609 -- @since 0.3.0
697 -- @since 0.3.0
610− , httpConfigRetryJudge :: forall b. RetryStatus -> L.Response b -> Bool
698+ httpConfigRetryPolicy :: RetryPolicyM IO,
611− -- ^ The function is used to decide whether to retry a request. 'True'
699+ -- | The function is used to decide whether to retry a request. 'True'
612 -- means that the request should be retried.
700 -- means that the request should be retried.
614 -- __Note__: signature of this function was changed in the version
702 -- __Note__: signature of this function was changed in the version
615 -- /1.0.0/.
703 -- /1.0.0/.
617 -- @since 0.3.0
705 -- @since 0.3.0
618− } deriving Typeable
706+ httpConfigRetryJudge :: forall b. RetryStatus -> L.Response b -> Bool,
707+ -- | Similar to 'httpConfigRetryJudge', but is used to decide when to
708+ -- retry requests that resulted in an exception. By default it retries
709+ -- on response timeout and connection timeout (changed in version
713+ httpConfigRetryJudgeException :: RetryStatus -> SomeException -> Bool,
714+ -- | Max length of preview fragment of response body.
717+ httpConfigBodyPreviewLength :: forall a. (Num a) => a
620−-- | Default value of 'HttpConfig'.
720+-- | The default value of 'HttpConfig'.
622-- @since 2.0.0
722-- @since 2.0.0
624defaultHttpConfig :: HttpConfig
723defaultHttpConfig :: HttpConfig
625−defaultHttpConfig = HttpConfig
724+defaultHttpConfig =
626− { httpConfigProxy = Nothing
726+ { httpConfigProxy = Nothing,
627− , httpConfigRedirectCount = 10
727+ httpConfigRedirectCount = 10,
628− , httpConfigAltManager = Nothing
728+ httpConfigAltManager = Nothing,
629− , httpConfigCheckResponse = \_ response preview ->
729+ httpConfigCheckResponse = \_ response preview ->
630− let scode = statusCode response
730+ let scode = statusCode response
631− in if 200 <= scode && scode < 300
731+ in if 200 <= scode && scode < 300
632− then Nothing
732+ then Nothing
633− else Just (L.StatusCodeException (void response) preview)
733+ else Just (L.StatusCodeException (void response) preview),
634− , httpConfigRetryPolicy = retryPolicyDefault
734+ httpConfigRetryPolicy = retryPolicyDefault,
635− , httpConfigRetryJudge = \_ response ->
735+ httpConfigRetryJudge = \_ response ->
636− statusCode response `elem`
736+ statusCode response
637− [ 408 -- Request timeout
737+ `elem` [ 408, -- Request timeout
638− , 504 -- Gateway timeout
738+ 504, -- Gateway timeout
639− , 524 -- A timeout occurred
739+ 524, -- A timeout occurred
640− , 598 -- (Informal convention) Network read timeout error
740+ 598, -- (Informal convention) Network read timeout error
641− , 599 -- (Informal convention) Network connect timeout error
741+ 599 -- (Informal convention) Network connect timeout error
743+ httpConfigRetryJudgeException = \_ e ->
744+ case fromException e of
745+ Just (L.HttpExceptionRequest _ c) ->
747+ L.ResponseTimeout -> True
748+ L.ConnectionTimeout -> True
751+ httpConfigBodyPreviewLength = 1024
645 statusCode = Y.statusCode . L.responseStatus
754 statusCode = Y.statusCode . L.responseStatus
647instance RequestComponent HttpConfig where
756instance RequestComponent HttpConfig where
648 getRequestMod HttpConfig {..} = Endo $ \x ->
757 getRequestMod HttpConfig {..} = Endo $ \x ->
649− x { L.proxy = httpConfigProxy
759+ { L.proxy = httpConfigProxy,
650− , L.redirectCount = httpConfigRedirectCount
760+ L.redirectCount = httpConfigRedirectCount,
651− , LI.requestManagerOverride = httpConfigAltManager }
761+ LI.requestManagerOverride = httpConfigAltManager
653−-- | A monad that allows to run 'req' in any 'IO'-enabled monad without
764+-- | A monad that allows us to run 'req' in any 'IO'-enabled monad without
654-- having to define new instances.
765-- having to define new instances.
656-- @since 0.4.0
767-- @since 0.4.0
658newtype Req a = Req (ReaderT HttpConfig IO a)
768newtype Req a = Req (ReaderT HttpConfig IO a)
659− deriving ( Functor
769+ deriving
660− , Applicative
771+ Applicative,
662− , MonadIO )
773+ MonadIO,
778+deriving instance MonadThrow Req
781+deriving instance MonadCatch Req
784+deriving instance MonadMask Req
664instance MonadBase IO Req where
786instance MonadBase IO Req where
665 liftBase = liftIO
787 liftBase = liftIO
@@ -668,22 +790,99 @@ instance MonadBaseControl IO Req where
668 type StM Req a = a
790 type StM Req a = a
669 liftBaseWith f = Req . ReaderT $ \r -> f (runReq r)
791 liftBaseWith f = Req . ReaderT $ \r -> f (runReq r)
670 {-# INLINEABLE liftBaseWith #-}
792 {-# INLINEABLE liftBaseWith #-}
671− restoreM = Req . ReaderT . const . return
793+ restoreM = Req . ReaderT . const . return
672 {-# INLINEABLE restoreM #-}
794 {-# INLINEABLE restoreM #-}
674instance MonadHttp Req where
796instance MonadHttp Req where
675 handleHttpException = Req . lift . throwIO
797 handleHttpException = Req . lift . throwIO
676− getHttpConfig = Req ask
798+ getHttpConfig = Req ask
801+instance (MonadHttp m, Monoid w) => MonadHttp (AccumT w m) where
802+ handleHttpException = lift . handleHttpException
803+ getHttpConfig = lift getHttpConfig
806+instance (MonadHttp m) => MonadHttp (ContT r m) where
807+ handleHttpException = lift . handleHttpException
808+ getHttpConfig = lift getHttpConfig
811+instance (MonadHttp m) => MonadHttp (ExceptT e m) where
812+ handleHttpException = lift . handleHttpException
813+ getHttpConfig = lift getHttpConfig
816+instance (MonadHttp m) => MonadHttp (IdentityT m) where
817+ handleHttpException = lift . handleHttpException
818+ getHttpConfig = lift getHttpConfig
821+instance (MonadHttp m) => MonadHttp (MaybeT m) where
822+ handleHttpException = lift . handleHttpException
823+ getHttpConfig = lift getHttpConfig
826+instance (MonadHttp m) => MonadHttp (ReaderT r m) where
827+ handleHttpException = lift . handleHttpException
828+ getHttpConfig = lift getHttpConfig
831+instance (MonadHttp m, Monoid w) => MonadHttp (RWS.CPS.RWST r w s m) where
832+ handleHttpException = lift . handleHttpException
833+ getHttpConfig = lift getHttpConfig
836+instance (MonadHttp m, Monoid w) => MonadHttp (RWS.Lazy.RWST r w s m) where
837+ handleHttpException = lift . handleHttpException
838+ getHttpConfig = lift getHttpConfig
841+instance (MonadHttp m, Monoid w) => MonadHttp (RWS.Strict.RWST r w s m) where
842+ handleHttpException = lift . handleHttpException
843+ getHttpConfig = lift getHttpConfig
846+instance (MonadHttp m) => MonadHttp (SelectT r m) where
847+ handleHttpException = lift . handleHttpException
848+ getHttpConfig = lift getHttpConfig
851+instance (MonadHttp m) => MonadHttp (State.Lazy.StateT s m) where
852+ handleHttpException = lift . handleHttpException
853+ getHttpConfig = lift getHttpConfig
856+instance (MonadHttp m) => MonadHttp (State.Strict.StateT s m) where
857+ handleHttpException = lift . handleHttpException
858+ getHttpConfig = lift getHttpConfig
861+instance (MonadHttp m, Monoid w) => MonadHttp (Writer.CPS.WriterT w m) where
862+ handleHttpException = lift . handleHttpException
863+ getHttpConfig = lift getHttpConfig
866+instance (MonadHttp m, Monoid w) => MonadHttp (Writer.Lazy.WriterT w m) where
867+ handleHttpException = lift . handleHttpException
868+ getHttpConfig = lift getHttpConfig
871+instance (MonadHttp m, Monoid w) => MonadHttp (Writer.Strict.WriterT w m) where
872+ handleHttpException = lift . handleHttpException
873+ getHttpConfig = lift getHttpConfig
678-- | Run a computation in the 'Req' monad with the given 'HttpConfig'. In
875-- | Run a computation in the 'Req' monad with the given 'HttpConfig'. In
679−-- case of exceptional situation an 'HttpException' will be thrown.
876+-- the case of an exceptional situation an 'HttpException' will be thrown.
681-- @since 0.4.0
878-- @since 0.4.0
683−runReq :: MonadIO m
880+ (MonadIO m) =>
684− => HttpConfig -- ^ 'HttpConfig' to use
881+ -- | 'HttpConfig' to use
685− -> Req a -- ^ Computation to run
883+ -- | Computation to run
687runReq config (Req m) = liftIO (runReaderT m config)
886runReq config (Req m) = liftIO (runReaderT m config)
689----------------------------------------------------------------------------
888----------------------------------------------------------------------------
@@ -699,7 +898,6 @@ runReq config (Req m) = liftIO (runReaderT m config)
699-- define a new method that will works seamlessly, see 'HttpMethod'.
898-- define a new method that will works seamlessly, see 'HttpMethod'.
701-- | 'GET' method.
900-- | 'GET' method.
703data GET = GET
901data GET = GET
705instance HttpMethod GET where
903instance HttpMethod GET where
@@ -707,7 +905,6 @@ instance HttpMethod GET where
707 httpMethodName Proxy = Y.methodGet
905 httpMethodName Proxy = Y.methodGet
709-- | 'POST' method.
907-- | 'POST' method.
711data POST = POST
908data POST = POST
713instance HttpMethod POST where
910instance HttpMethod POST where
@@ -715,7 +912,6 @@ instance HttpMethod POST where
715 httpMethodName Proxy = Y.methodPost
912 httpMethodName Proxy = Y.methodPost
717-- | 'HEAD' method.
914-- | 'HEAD' method.
719data HEAD = HEAD
915data HEAD = HEAD
721instance HttpMethod HEAD where
917instance HttpMethod HEAD where
@@ -723,26 +919,24 @@ instance HttpMethod HEAD where
723 httpMethodName Proxy = Y.methodHead
919 httpMethodName Proxy = Y.methodHead
725-- | 'PUT' method.
921-- | 'PUT' method.
727data PUT = PUT
922data PUT = PUT
729instance HttpMethod PUT where
924instance HttpMethod PUT where
730 type AllowsBody PUT = 'CanHaveBody
925 type AllowsBody PUT = 'CanHaveBody
731 httpMethodName Proxy = Y.methodPut
926 httpMethodName Proxy = Y.methodPut
733−-- | 'DELETE' method. This data type does not allow having request body with
928+-- | 'DELETE' method. RFC 7231 allows a payload in DELETE but without
734−-- 'DELETE' requests, as it should be. However some APIs may expect 'DELETE'
929+-- semantics.
735−-- requests to have bodies, in that case define your own variation of
930+--
736−-- 'DELETE' method and allow it to have a body.
931+-- __Note__: before version /3.4.0/ this method did not allow request
738data DELETE = DELETE
933data DELETE = DELETE
740instance HttpMethod DELETE where
935instance HttpMethod DELETE where
741− type AllowsBody DELETE = 'NoBody
936+ type AllowsBody DELETE = 'CanHaveBody
742 httpMethodName Proxy = Y.methodDelete
937 httpMethodName Proxy = Y.methodDelete
744-- | 'TRACE' method.
939-- | 'TRACE' method.
746data TRACE = TRACE
940data TRACE = TRACE
748instance HttpMethod TRACE where
942instance HttpMethod TRACE where
@@ -750,7 +944,6 @@ instance HttpMethod TRACE where
750 httpMethodName Proxy = Y.methodTrace
944 httpMethodName Proxy = Y.methodTrace
752-- | 'CONNECT' method.
946-- | 'CONNECT' method.
754data CONNECT = CONNECT
947data CONNECT = CONNECT
756instance HttpMethod CONNECT where
949instance HttpMethod CONNECT where
@@ -758,7 +951,6 @@ instance HttpMethod CONNECT where
758 httpMethodName Proxy = Y.methodConnect
951 httpMethodName Proxy = Y.methodConnect
760-- | 'OPTIONS' method.
953-- | 'OPTIONS' method.
762data OPTIONS = OPTIONS
954data OPTIONS = OPTIONS
764instance HttpMethod OPTIONS where
956instance HttpMethod OPTIONS where
@@ -766,7 +958,6 @@ instance HttpMethod OPTIONS where
766 httpMethodName Proxy = Y.methodOptions
958 httpMethodName Proxy = Y.methodOptions
768-- | 'PATCH' method.
960-- | 'PATCH' method.
770data PATCH = PATCH
961data PATCH = PATCH
772instance HttpMethod PATCH where
963instance HttpMethod PATCH where
@@ -781,23 +972,19 @@ instance HttpMethod PATCH where
781-- > instance HttpMethod COPY where
972-- > instance HttpMethod COPY where
782-- > type AllowsBody COPY = 'CanHaveBody
973-- > type AllowsBody COPY = 'CanHaveBody
783-- > httpMethodName Proxy = "COPY"
974-- > httpMethodName Proxy = "COPY"
785class HttpMethod a where
975class HttpMethod a where
787 -- | Type function 'AllowsBody' returns a type of kind 'CanHaveBody' which
976 -- | Type function 'AllowsBody' returns a type of kind 'CanHaveBody' which
788 -- tells the rest of the library whether the method can have body or not.
977 -- tells the rest of the library whether the method can have body or not.
789 -- We use the special type 'CanHaveBody' lifted to the kind level instead
978 -- We use the special type 'CanHaveBody' lifted to the kind level instead
790 -- of 'Bool' to get more user-friendly compiler messages.
979 -- of 'Bool' to get more user-friendly compiler messages.
792 type AllowsBody a :: CanHaveBody
980 type AllowsBody a :: CanHaveBody
794 -- | Return name of the method as a 'ByteString'.
982 -- | Return name of the method as a 'ByteString'.
796 httpMethodName :: Proxy a -> ByteString
983 httpMethodName :: Proxy a -> ByteString
798−instance HttpMethod method => RequestComponent (Womb "method" method) where
985+instance (HttpMethod method) => RequestComponent (Tagged "method" method) where
799 getRequestMod _ = Endo $ \x ->
986 getRequestMod _ = Endo $ \x ->
800− x { L.method = httpMethodName (Proxy :: Proxy method) }
987+ x {L.method = httpMethodName (Proxy :: Proxy method)}
802----------------------------------------------------------------------------
989----------------------------------------------------------------------------
803-- Request—URL
990-- Request—URL
@@ -805,8 +992,7 @@ instance HttpMethod method => RequestComponent (Womb "method" method) where
807-- We use 'Url's which are correct by construction, see 'Url'. To build a
994-- We use 'Url's which are correct by construction, see 'Url'. To build a
808−-- 'Url' from a 'ByteString', use 'parseUrlHttp', 'parseUrlHttps', or
995+-- 'Url' from a 'URI', use 'useHttpURI', 'useHttpsURI', or generic 'useURI'.
809−-- generic 'parseUrl'.
811-- | Request's 'Url'. Start constructing your 'Url' with 'http' or 'https'
997-- | Request's 'Url'. Start constructing your 'Url' with 'http' or 'https'
812-- specifying the scheme and host at the same time. Then use the @('/~')@
998-- specifying the scheme and host at the same time. Then use the @('/~')@
@@ -836,103 +1022,194 @@ instance HttpMethod method => RequestComponent (Womb "method" method) where
837-- > https "юникод.рф"
1023-- > https "юникод.рф"
838-- > -- https://%D1%8E%D0%BD%D0%B8%D0%BA%D0%BE%D0%B4.%D1%80%D1%84
1024-- > -- https://%D1%8E%D0%BD%D0%B8%D0%BA%D0%BE%D0%B4.%D1%80%D1%84
840data Url (scheme :: Scheme) = Url Scheme (NonEmpty Text)
1025data Url (scheme :: Scheme) = Url Scheme (NonEmpty Text)
841 -- NOTE The second value is the path segments in reversed order.
1026 -- NOTE The second value is the path segments in reversed order.
842− deriving (Eq, Ord, Show, Data, Typeable, Generic)
1027+ deriving (Eq, Ord, Show, Data, Generic)
1029+type role Url nominal
1031+-- With template-haskell >=2.15 and text >=1.2.4 Lift can be derived, however
1032+-- the derived lift forgets the type of the scheme.
1033+instance (Typeable scheme) => TH.Lift (Url scheme) where
1035+ TH.dataToExpQ (fmap liftText . cast) url `TH.sigE` case url of
1036+ Url Http _ -> [t|Url 'Http|]
1037+ Url Https _ -> [t|Url 'Https|]
1039+ liftText t = TH.AppE (TH.VarE 'T.pack) <$> TH.lift (T.unpack t)
1040+ liftTyped = TH.Code . TH.unsafeTExpCoerce . TH.lift
844-- | Given host name, produce a 'Url' which has “http” as its scheme and
1042-- | Given host name, produce a 'Url' which has “http” as its scheme and
845-- empty path. This also sets port to @80@.
1043-- empty path. This also sets port to @80@.
847http :: Text -> Url 'Http
1044http :: Text -> Url 'Http
848http = Url Http . pure
1045http = Url Http . pure
850-- | Given host name, produce a 'Url' which has “https” as its scheme and
1047-- | Given host name, produce a 'Url' which has “https” as its scheme and
851-- empty path. This also sets port to @443@.
1048-- empty path. This also sets port to @443@.
853https :: Text -> Url 'Https
1049https :: Text -> Url 'Https
854https = Url Https . pure
1050https = Url Https . pure
856−-- | Grow given 'Url' appending a single path segment to it. Note that the
1052+-- | Grow a given 'Url' appending a single path segment to it. Note that the
857-- path segment can be of any type that is an instance of 'ToHttpApiData'.
1053-- path segment can be of any type that is an instance of 'ToHttpApiData'.
859infixl 5 /~
1054infixl 5 /~
860−(/~) :: ToHttpApiData a => Url scheme -> a -> Url scheme
861−Url secure path /~ segment = Url secure (NE.cons (toUrlPiece segment) path)
863−-- | Type-constrained version of @('/~')@ to remove ambiguity in the cases
1056+(/~) :: (ToHttpApiData a) => Url scheme -> a -> Url scheme
864−-- when next URL piece is a 'Text' literal.
1057+Url secure path /~ segment = Url secure (NE.cons (toUrlPiece segment) path)
1059+-- | A type-constrained version of @('/~')@ to remove ambiguity in the cases
1060+-- when next URL piece is a 'Data.Text.Text' literal.
866infixl 5 /:
1061infixl 5 /:
867(/:) :: Url scheme -> Text -> Url scheme
1063(/:) :: Url scheme -> Text -> Url scheme
868(/:) = (/~)
1064(/:) = (/~)
1066+-- | Render a 'Url' as 'Text'.
1069+renderUrl :: Url scheme -> Text
1072+ "https://" <> renderParts parts
1074+ "http://" <> renderParts parts
1076+ renderParts parts =
1077+ T.intercalate "/" (reverse $ NE.toList parts)
870−-- | The 'parseUrlHttp' function provides an alternative method to get 'Url'
1079+-- | The 'useHttpURI' function provides an alternative method to get 'Url'
871−-- (possibly with some 'Option's) from a 'ByteString'. This is useful when
1080+-- (possibly with some 'Option's) from a 'URI'. This is useful when you are
872−-- you are given a URL to query dynamically and don't know it beforehand.
1081+-- given a URL to query dynamically and don't know it beforehand.
873−-- The function parses 'ByteString' because it's the correct type to
1082+--
874−-- represent a URL, as 'Url' cannot contain characters outside of ASCII
1083+-- This function expects the scheme to be “http” and host to be present.
875−-- range, thus we can consider every character a 'Data.Word.Word8' value.
1084+--
876−--
1085+-- @since 3.0.0
877−-- This function only parses 'Url' (scheme, host, path) and optional query
1086+useHttpURI :: URI -> Maybe (Url 'Http, Option scheme)
878−-- parameters that are returned as 'Option'. It does not parse method name
1087+useHttpURI uri = do
879−-- or authentication info from given 'ByteString'.
1088+ guard (URI.uriScheme uri == Just [QQ.scheme|http|])
880−--
1089+ urlHead <- http <$> uriHost uri
881−-- This function expected scheme to be “http”.
1090+ let url = case URI.uriPath uri of
882−
1091+ Nothing -> urlHead
883−parseUrlHttp :: ByteString -> Maybe (Url 'Http, Option scheme)
1092+ Just uriPath -> uriPathToUrl uriPath urlHead
884−parseUrlHttp url' = do
1093+ return (url, uriOptions uri)
885− url <- B.stripPrefix "http://" url'
1094+
886− (host :| path, option) <- parseUrlHelper url
887− return (foldl (/:) (http host) path, option)
889−-- | Just like 'parseUrlHttp', but expects the “https” scheme.
1095+-- | Just like 'useHttpURI', but expects the “https” scheme.
891−parseUrlHttps :: ByteString -> Maybe (Url 'Https, Option scheme)
1098+useHttpsURI :: URI -> Maybe (Url 'Https, Option scheme)
892−parseUrlHttps url' = do
1099+useHttpsURI uri = do
893− url <- B.stripPrefix "https://" url'
1100+ guard (URI.uriScheme uri == Just [QQ.scheme|https|])
894− (host :| path, option) <- parseUrlHelper url
1101+ urlHead <- https <$> uriHost uri
895− return (foldl (/:) (https host) path, option)
1102+ let url = case URI.uriPath uri of
896−
1103+ Nothing -> urlHead
897−-- | A more general URI parsing function that can be used when scheme is not
1104+ Just uriPath -> uriPathToUrl uriPath urlHead
898−-- known beforehand.
1105+ return (url, uriOptions uri)
1107+-- | Convert URI path to a 'Url'. Internal.
1111+ (Bool, NonEmpty (URI.RText 'URI.PathPiece)) ->
1114+uriPathToUrl (trailingSlash, xs) urlHead =
1115+ if trailingSlash then path /: T.empty else path
1117+ path = foldl' (/:) urlHead (URI.unRText <$> NE.toList xs)
1119+-- | A combination of 'useHttpURI' and 'useHttpsURI' for cases when scheme
1120+-- is not known in advance.
900−-- @since 1.2.1
1122+-- @since 3.0.0
903− :: ByteString
1125+ Maybe
1127+ (Url 'Http, Option scheme0)
904− -> Maybe (Either (Url 'Http, Option scheme0) (Url 'Https, Option scheme1))
1128+ (Url 'Https, Option scheme1)
905−parseUrl url = Left <$> parseUrlHttp url <|> Right <$> parseUrlHttps url
1129+ )
907−-- | Get host\/collection of path pieces and possibly query parameters
1131+ (Left <$> useHttpURI uri) <|> (Right <$> useHttpsURI uri)
908−-- already converted to 'Option'. This function is not public.
1132+
909−
1133+-- | An internal helper function to extract host from a 'URI'.
910−parseUrlHelper :: ByteString -> Maybe (NonEmpty Text, Option scheme)
1134+uriHost :: URI -> Maybe Text
911−parseUrlHelper url = do
1135+uriHost uri = case URI.uriAuthority uri of
912− let (path', query') = B.break (== 0x3f) url
1136+ Left _ -> Nothing
913− query = mconcat (uncurry queryParam <$> Y.parseQueryText query')
1137+ Right URI.Authority {..} ->
914− p' :| ps <- NE.nonEmpty (Y.decodePathSegments path')
1138+ Just (URI.unRText authHost)
916− case T.break (== ':') p' of
1140+-- | A quasiquoter to build an 'Url' and 'Option' tuple. The type of the
917− (x, "") -> return (x, mempty)
1141+-- generated expression is @('Url' scheme0, 'Option' scheme1)@ with
918− (x, prt) ->
1142+-- @scheme0@ being either 'Http' or 'Https' depending on the input.
919− case TR.decimal (T.drop 1 prt) of
1143+--
920− Right (prt',"") -> return (x, port prt')
1144+-- @since 3.2.0
921− _ -> Nothing
1145+urlQ :: TH.QuasiQuoter
922− return (p :| ps, query <> port')
1146+urlQ =
1148+ { quoteExp = \str ->
1149+ case URI.mkURI (T.pack str) of
1150+ Left err -> fail (displayException err)
1151+ Right uri -> case useURI uri of
1152+ Nothing -> fail "Not a HTTP or HTTPS URL"
1155+ [ either (TH.lift . fst) (TH.lift . fst) eurl,
1158+ quotePat = error "This usage is not supported",
1159+ quoteType = error "This usage is not supported",
1160+ quoteDec = error "This usage is not supported"
1163+-- | An internal helper function to extract 'Option's from a 'URI'.
1164+uriOptions :: forall scheme. URI -> Option scheme
1174+ case URI.uriAuthority uri of
1175+ Left _ -> (mempty, mempty)
1176+ Right URI.Authority {..} ->
1177+ let auth0 = case authUserInfo of
1179+ Just URI.UserInfo {..} ->
1180+ let username = T.encodeUtf8 (URI.unRText uiUsername)
1181+ password = maybe "" (T.encodeUtf8 . URI.unRText) uiPassword
1182+ in basicAuthUnsafe username password
1183+ port0 = case authPort of
1185+ Just port'' -> port (fromIntegral port'')
1188+ let liftQueryParam = \case
1189+ URI.QueryFlag t -> queryFlag (URI.unRText t)
1190+ URI.QueryParam k v -> URI.unRText k =: URI.unRText v
1191+ in mconcat (liftQueryParam <$> URI.uriQuery uri)
1193+-- TODO Blocked on upstream: https://github.com/snoyberg/http-client/issues/424
1195+-- case URI.uriFragment uri of
1196+-- Nothing -> mempty
1197+-- Just fragment'' -> fragment (URI.unRText fragment'')
924instance RequestComponent (Url scheme) where
1199instance RequestComponent (Url scheme) where
925 getRequestMod (Url scheme segments) = Endo $ \x ->
1200 getRequestMod (Url scheme segments) = Endo $ \x ->
926− let (host :| path) = NE.reverse segments in
1201+ let (host :| path) = NE.reverse segments
927− x { L.secure = case scheme of
1203+ { L.secure = case scheme of
928− Http -> False
1204+ Http -> False
929− Https -> True
1205+ Https -> True,
930− , L.port = case scheme of
1206+ L.port = case scheme of
931− Http -> 80
1207+ Http -> 80
932− Https -> 443
1208+ Https -> 443,
933− , L.host = Y.urlEncode False (T.encodeUtf8 host)
1209+ L.host = Y.urlEncode False (T.encodeUtf8 host),
934− , L.path =
1210+ L.path =
935− (BL.toStrict . BB.toLazyByteString . Y.encodePathSegments) path }
1211+ (BL.toStrict . BB.toLazyByteString . Y.encodePathSegments) path
937----------------------------------------------------------------------------
1214----------------------------------------------------------------------------
938-- Request—Body
1215-- Request—Body
@@ -950,31 +1227,28 @@ instance RequestComponent (Url scheme) where
950-- only type for which 'ProvidesBody' returns 'NoBody'.
1227-- only type for which 'ProvidesBody' returns 'NoBody'.
952-- Using of this body option does not set the @Content-Type@ header.
1229-- Using of this body option does not set the @Content-Type@ header.
954data NoReqBody = NoReqBody
1230data NoReqBody = NoReqBody
956instance HttpBody NoReqBody where
1232instance HttpBody NoReqBody where
957 getRequestBody NoReqBody = L.RequestBodyBS B.empty
1233 getRequestBody NoReqBody = L.RequestBodyBS B.empty
959−-- | This body option allows to use a JSON object as request body—probably
1235+-- | This body option allows us to use a JSON object as the request
960−-- the most popular format right now. Just wrap a data type that is an
1236+-- body—probably the most popular format right now. Just wrap a data type
961−-- instance of 'ToJSON' type class and you are done: it will be converted to
1237+-- that is an instance of 'ToJSON' type class and you are done: it will be
962−-- JSON and inserted as request body.
1238+-- converted to JSON and inserted as request body.
964-- This body option sets the @Content-Type@ header to @\"application/json;
1240-- This body option sets the @Content-Type@ header to @\"application/json;
965-- charset=utf-8\"@ value.
1241-- charset=utf-8\"@ value.
967newtype ReqBodyJson a = ReqBodyJson a
1242newtype ReqBodyJson a = ReqBodyJson a
969−instance ToJSON a => HttpBody (ReqBodyJson a) where
1244+instance (ToJSON a) => HttpBody (ReqBodyJson a) where
970 getRequestBody (ReqBodyJson a) = L.RequestBodyLBS (A.encode a)
1245 getRequestBody (ReqBodyJson a) = L.RequestBodyLBS (A.encode a)
971 getRequestContentType _ = pure "application/json; charset=utf-8"
1246 getRequestContentType _ = pure "application/json; charset=utf-8"
973-- | This body option streams request body from a file. It is expected that
1248-- | This body option streams request body from a file. It is expected that
974−-- the file size does not change during the streaming.
1249+-- the file size does not change during streaming.
976-- Using of this body option does not set the @Content-Type@ header.
1251-- Using of this body option does not set the @Content-Type@ header.
978newtype ReqBodyFile = ReqBodyFile FilePath
1252newtype ReqBodyFile = ReqBodyFile FilePath
980instance HttpBody ReqBodyFile where
1254instance HttpBody ReqBodyFile where
@@ -984,7 +1258,6 @@ instance HttpBody ReqBodyFile where
984-- | HTTP request body represented by a strict 'ByteString'.
1258-- | HTTP request body represented by a strict 'ByteString'.
986-- Using of this body option does not set the @Content-Type@ header.
1260-- Using of this body option does not set the @Content-Type@ header.
988newtype ReqBodyBs = ReqBodyBs ByteString
1261newtype ReqBodyBs = ReqBodyBs ByteString
990instance HttpBody ReqBodyBs where
1263instance HttpBody ReqBodyBs where
@@ -993,22 +1266,19 @@ instance HttpBody ReqBodyBs where
993-- | HTTP request body represented by a lazy 'BL.ByteString'.
1266-- | HTTP request body represented by a lazy 'BL.ByteString'.
995-- Using of this body option does not set the @Content-Type@ header.
1268-- Using of this body option does not set the @Content-Type@ header.
997newtype ReqBodyLbs = ReqBodyLbs BL.ByteString
1269newtype ReqBodyLbs = ReqBodyLbs BL.ByteString
999instance HttpBody ReqBodyLbs where
1271instance HttpBody ReqBodyLbs where
1000 getRequestBody (ReqBodyLbs bs) = L.RequestBodyLBS bs
1272 getRequestBody (ReqBodyLbs bs) = L.RequestBodyLBS bs
1002−-- | Form URL-encoded body. This can hold a collection of parameters which
1274+-- | URL-encoded body. This can hold a collection of parameters which are
1003−-- are encoded similarly to query parameters at the end of query string,
1275+-- encoded similarly to query parameters at the end of query string, with
1004−-- with the only difference that they are stored in request body. The
1276+-- the only difference that they are stored in request body. The similarity
1005−-- similarity is reflected in the API as well, as you can use the same
1277+-- is reflected in the API as well, as you can use the same combinators you
1006−-- combinators you would use to add query parameters: @('=:')@ and
1278+-- would use to add query parameters: @('=:')@ and 'queryFlag'.
1009-- This body option sets the @Content-Type@ header to
1280-- This body option sets the @Content-Type@ header to
1010-- @\"application/x-www-form-urlencoded\"@ value.
1281-- @\"application/x-www-form-urlencoded\"@ value.
1012newtype ReqBodyUrlEnc = ReqBodyUrlEnc FormUrlEncodedParam
1282newtype ReqBodyUrlEnc = ReqBodyUrlEnc FormUrlEncodedParam
1014instance HttpBody ReqBodyUrlEnc where
1284instance HttpBody ReqBodyUrlEnc where
@@ -1018,13 +1288,19 @@ instance HttpBody ReqBodyUrlEnc where
1019-- | An opaque monoidal value that allows to collect URL-encoded parameters
1289-- | An opaque monoidal value that allows to collect URL-encoded parameters
1020-- to be wrapped in 'ReqBodyUrlEnc'.
1290-- to be wrapped in 'ReqBodyUrlEnc'.
1022newtype FormUrlEncodedParam = FormUrlEncodedParam [(Text, Maybe Text)]
1291newtype FormUrlEncodedParam = FormUrlEncodedParam [(Text, Maybe Text)]
1023 deriving (Semigroup, Monoid)
1292 deriving (Semigroup, Monoid)
1025instance QueryParam FormUrlEncodedParam where
1294instance QueryParam FormUrlEncodedParam where
1026 queryParam name mvalue =
1295 queryParam name mvalue =
1027 FormUrlEncodedParam [(name, toQueryParam <$> mvalue)]
1296 FormUrlEncodedParam [(name, toQueryParam <$> mvalue)]
1297+ queryParamToList (FormUrlEncodedParam p) = p
1299+-- | Use 'formToQuery'.
1302+instance FromForm FormUrlEncodedParam where
1303+ fromForm = Right . formToQuery
1029-- | Multipart form data. Please consult the
1305-- | Multipart form data. Please consult the
1030-- "Network.HTTP.Client.MultipartFormData" module for how to construct
1306-- "Network.HTTP.Client.MultipartFormData" module for how to construct
@@ -1054,7 +1330,6 @@ instance QueryParam FormUrlEncodedParam where
1054-- > bsResponse
1330-- > bsResponse
1055-- > mempty
1331-- > mempty
1056-- > liftIO $ print (responseBody response)
1332-- > liftIO $ print (responseBody response)
1058data ReqBodyMultipart = ReqBodyMultipart ByteString LI.RequestBody
1333data ReqBodyMultipart = ReqBodyMultipart ByteString LI.RequestBody
1060instance HttpBody ReqBodyMultipart where
1335instance HttpBody ReqBodyMultipart where
@@ -1065,63 +1340,57 @@ instance HttpBody ReqBodyMultipart where
1065-- | Create 'ReqBodyMultipart' request body from a collection of 'LM.Part's.
1340-- | Create 'ReqBodyMultipart' request body from a collection of 'LM.Part's.
1067-- @since 0.2.0
1342-- @since 0.2.0
1069−reqBodyMultipart :: MonadIO m => [LM.Part] -> m ReqBodyMultipart
1343+reqBodyMultipart :: (MonadIO m) => [LM.Part] -> m ReqBodyMultipart
1070reqBodyMultipart parts = liftIO $ do
1344reqBodyMultipart parts = liftIO $ do
1071 boundary <- LM.webkitBoundary
1345 boundary <- LM.webkitBoundary
1072− body <- LM.renderParts boundary parts
1346+ body <- LM.renderParts boundary parts
1073 return (ReqBodyMultipart boundary body)
1347 return (ReqBodyMultipart boundary body)
1075-- | A type class for things that can be interpreted as an HTTP
1349-- | A type class for things that can be interpreted as an HTTP
1076-- 'L.RequestBody'.
1350-- 'L.RequestBody'.
1078class HttpBody body where
1351class HttpBody body where
1080 -- | How to get actual 'L.RequestBody'.
1352 -- | How to get actual 'L.RequestBody'.
1082 getRequestBody :: body -> L.RequestBody
1353 getRequestBody :: body -> L.RequestBody
1084 -- | This method allows us to optionally specify the value of
1355 -- | This method allows us to optionally specify the value of
1085 -- @Content-Type@ header that should be used with particular body option.
1356 -- @Content-Type@ header that should be used with particular body option.
1086 -- By default it returns 'Nothing' and so @Content-Type@ is not set.
1357 -- By default it returns 'Nothing' and so @Content-Type@ is not set.
1088 getRequestContentType :: body -> Maybe ByteString
1358 getRequestContentType :: body -> Maybe ByteString
1089 getRequestContentType = const Nothing
1359 getRequestContentType = const Nothing
1091-- | The type function recognizes 'NoReqBody' as having 'NoBody', while any
1361-- | The type function recognizes 'NoReqBody' as having 'NoBody', while any
1092-- other body option 'CanHaveBody'. This forces the user to use 'NoReqBody'
1362-- other body option 'CanHaveBody'. This forces the user to use 'NoReqBody'
1093-- with 'GET' method and other methods that should not have body.
1363-- with 'GET' method and other methods that should not have body.
1095type family ProvidesBody body :: CanHaveBody where
1364type family ProvidesBody body :: CanHaveBody where
1096 ProvidesBody NoReqBody = 'NoBody
1365 ProvidesBody NoReqBody = 'NoBody
1097− ProvidesBody body = 'CanHaveBody
1366+ ProvidesBody body = 'CanHaveBody
1099-- | This type function allows any HTTP body if method says it
1368-- | This type function allows any HTTP body if method says it
1100-- 'CanHaveBody'. When the method says it should have 'NoBody', the only
1369-- 'CanHaveBody'. When the method says it should have 'NoBody', the only
1101-- body option to use is 'NoReqBody'.
1370-- body option to use is 'NoReqBody'.
1103−-- __Note__: users of GHC 8.0.1 and later will see a slightly more friendly
1104−-- error message when method does not allow a body and body is provided.
1106−type family HttpBodyAllowed
1371+type family
1107− (allowsBody :: CanHaveBody)
1373+ (allowsBody :: CanHaveBody)
1108− (providesBody :: CanHaveBody) :: Constraint where
1374+ (providesBody :: CanHaveBody) ::
1109− HttpBodyAllowed 'NoBody 'NoBody = ()
1377+ HttpBodyAllowed 'NoBody 'NoBody = ()
1110− HttpBodyAllowed 'CanHaveBody body = ()
1378+ HttpBodyAllowed 'CanHaveBody body = ()
1111−#if MIN_VERSION_base(4,9,0)
1112− HttpBodyAllowed 'NoBody 'CanHaveBody = TypeError
1379+ HttpBodyAllowed 'NoBody 'CanHaveBody =
1113− ('Text "This HTTP method does not allow attaching a request body.")
1381+ ('Text "This HTTP method does not allow attaching a request body.")
1116−instance HttpBody body => RequestComponent (Womb "body" body) where
1383+instance (HttpBody body) => RequestComponent (Tagged "body" body) where
1117− getRequestMod (Womb body) = Endo $ \x ->
1384+ getRequestMod (Tagged body) = Endo $ \x ->
1118− x { L.requestBody = getRequestBody body
1386+ { L.requestBody = getRequestBody body,
1119− , L.requestHeaders =
1387+ L.requestHeaders =
1120− let old = L.requestHeaders x in
1388+ let old = L.requestHeaders x
1121− case getRequestContentType body of
1389+ in case getRequestContentType body of
1122− Nothing -> old
1390+ Nothing -> old
1123− Just contentType ->
1391+ Just contentType ->
1124− (Y.hContentType, contentType) : old }
1392+ (Y.hContentType, contentType) : old
1126----------------------------------------------------------------------------
1395----------------------------------------------------------------------------
1127-- Request—Optional parameters
1396-- Request—Optional parameters
@@ -1137,46 +1406,51 @@ instance HttpBody body => RequestComponent (Womb "body" body) where
1137-- | The opaque 'Option' type is a 'Monoid' you can use to pack collection
1406-- | The opaque 'Option' type is a 'Monoid' you can use to pack collection
1138-- of optional parameters like query parameters and headers. See sections
1407-- of optional parameters like query parameters and headers. See sections
1139-- below to learn which 'Option' primitives are available.
1408-- below to learn which 'Option' primitives are available.
1409+data Option (scheme :: Scheme)
1410+ = Option (Endo (Y.QueryText, L.Request)) (Maybe (L.Request -> IO L.Request))
1141−data Option (scheme :: Scheme) =
1142− Option (Endo (Y.QueryText, L.Request)) (Maybe (L.Request -> IO L.Request))
1143− -- NOTE 'QueryText' is just [(Text, Maybe Text)], we keep it along with
1412+-- NOTE 'QueryText' is just [(Text, Maybe Text)], we keep it along with
1144− -- Request to avoid appending to existing query string in request every
1413+-- Request to avoid appending to an existing query string in request every
1145− -- time new parameter is added. Additional Maybe (L.Request -> IO
1414+-- time new parameter is added. The additional Maybe (L.Request -> IO
1146− -- L.Request) is a finalizer that will be applied after all other
1415+-- L.Request) is a finalizer that will be applied after all other
1147− -- transformations. This is for authentication methods that sign requests
1416+-- transformations. This is for authentication methods that sign requests
1148− -- based on data in Request.
1417+-- based on data in Request.
1150instance Semigroup (Option scheme) where
1419instance Semigroup (Option scheme) where
1151− Option er0 mr0 <> Option er1 mr1 = Option
1420+ Option er0 mr0 <> Option er1 mr1 =
1152− (er0 <> er1) (mr0 <|> mr1)
1422+ (er0 <> er1)
1154instance Monoid (Option scheme) where
1425instance Monoid (Option scheme) where
1155− mempty = Option mempty Nothing
1426+ mempty = Option mempty Nothing
1156 mappend = (<>)
1427 mappend = (<>)
1429+-- | Use 'formToQuery'.
1432+instance FromForm (Option scheme) where
1433+ fromForm = Right . formToQuery
1158-- | A helper to create an 'Option' that modifies only collection of query
1435-- | A helper to create an 'Option' that modifies only collection of query
1159-- parameters. This helper is not a part of the public API.
1436-- parameters. This helper is not a part of the public API.
1161withQueryParams :: (Y.QueryText -> Y.QueryText) -> Option scheme
1437withQueryParams :: (Y.QueryText -> Y.QueryText) -> Option scheme
1162withQueryParams f = Option (Endo (first f)) Nothing
1438withQueryParams f = Option (Endo (first f)) Nothing
1164-- | A helper to create an 'Option' that modifies only 'L.Request'. This
1440-- | A helper to create an 'Option' that modifies only 'L.Request'. This
1165-- helper is not a part of public API.
1441-- helper is not a part of public API.
1167withRequest :: (L.Request -> L.Request) -> Option scheme
1442withRequest :: (L.Request -> L.Request) -> Option scheme
1168withRequest f = Option (Endo (second f)) Nothing
1443withRequest f = Option (Endo (second f)) Nothing
1170instance RequestComponent (Option scheme) where
1445instance RequestComponent (Option scheme) where
1171 getRequestMod (Option f _) = Endo $ \x ->
1446 getRequestMod (Option f _) = Endo $ \x ->
1172 let (qparams, x') = appEndo f ([], x)
1447 let (qparams, x') = appEndo f ([], x)
1173− query = Y.renderQuery True (Y.queryTextToQuery qparams)
1448+ query = Y.renderQuery True (Y.queryTextToQuery qparams)
1174− in x' { L.queryString = query }
1449+ in x' {L.queryString = query}
1176-- | Finalize given 'L.Request' by applying a finalizer from the given
1451-- | Finalize given 'L.Request' by applying a finalizer from the given
1177-- 'Option' (if it has any).
1452-- 'Option' (if it has any).
1179−finalizeRequest :: MonadIO m => Option scheme -> L.Request -> m L.Request
1453+finalizeRequest :: (MonadIO m) => Option scheme -> L.Request -> m L.Request
1180finalizeRequest (Option _ mfinalizer) = liftIO . fromMaybe pure mfinalizer
1454finalizeRequest (Option _ mfinalizer) = liftIO . fromMaybe pure mfinalizer
1182----------------------------------------------------------------------------
1456----------------------------------------------------------------------------
@@ -1195,12 +1469,12 @@ finalizeRequest (Option _ mfinalizer) = liftIO . fromMaybe pure mfinalizer
1195-- This operator is defined in terms of 'queryParam':
1469-- This operator is defined in terms of 'queryParam':
1197-- > name =: value = queryParam name (pure value)
1471-- > name =: value = queryParam name (pure value)
1199infix 7 =:
1472infix 7 =:
1200(=:) :: (QueryParam param, ToHttpApiData a) => Text -> a -> param
1474(=:) :: (QueryParam param, ToHttpApiData a) => Text -> a -> param
1201name =: value = queryParam name (pure value)
1475name =: value = queryParam name (pure value)
1203−-- | Construct a flag, that is, valueless query parameter. For example, in
1477+-- | Construct a flag, that is, a valueless query parameter. For example, in
1204-- the following URL @\"a\"@ is a flag, while @\"b\"@ is a query parameter
1478-- the following URL @\"a\"@ is a flag, while @\"b\"@ is a query parameter
1205-- with a value:
1479-- with a value:
@@ -1209,27 +1483,47 @@ name =: value = queryParam name (pure value)
1209-- This operator is defined in terms of 'queryParam':
1483-- This operator is defined in terms of 'queryParam':
1211-- > queryFlag name = queryParam name (Nothing :: Maybe ())
1485-- > queryFlag name = queryParam name (Nothing :: Maybe ())
1213−queryFlag :: QueryParam param => Text -> param
1486+queryFlag :: (QueryParam param) => Text -> param
1214queryFlag name = queryParam name (Nothing :: Maybe ())
1487queryFlag name = queryParam name (Nothing :: Maybe ())
1489+-- | Construct query parameters from a 'ToForm' instance. This function
1490+-- produces the same query params as 'Form.urlEncodeAsFormStable'.
1492+-- Note that 'Form.Form' doesn't have the concept of parameters with the
1493+-- empty value (i.e. what you can get by @key =: ""@). If the value is
1494+-- empty, it will be encoded as a valueless parameter (i.e. what you can get
1495+-- by @queryFlag key@).
1498+formToQuery :: (QueryParam param, Monoid param, ToForm f) => f -> param
1499+formToQuery f = mconcat . fmap toParam . Form.toListStable $ toForm f
1501+ toParam (key, val) =
1216-- | A type class for query-parameter-like things. The reason to have an
1507-- | A type class for query-parameter-like things. The reason to have an
1217-- overloaded 'queryParam' is to be able to use it as an 'Option' and as a
1508-- overloaded 'queryParam' is to be able to use it as an 'Option' and as a
1218-- 'FormUrlEncodedParam' when constructing form URL encoded request bodies.
1509-- 'FormUrlEncodedParam' when constructing form URL encoded request bodies.
1219-- Having the same syntax for these cases seems natural and user-friendly.
1510-- Having the same syntax for these cases seems natural and user-friendly.
1221class QueryParam param where
1511class QueryParam param where
1223 -- | Create a query parameter with given name and value. If value is
1512 -- | Create a query parameter with given name and value. If value is
1224 -- 'Nothing', it won't be included at all (i.e. you create a flag this
1513 -- 'Nothing', it won't be included at all (i.e. you create a flag this
1225 -- way). It's recommended to use @('=:')@ and 'queryFlag' instead of this
1514 -- way). It's recommended to use @('=:')@ and 'queryFlag' instead of this
1226 -- method, because they are easier to read.
1515 -- method, because they are easier to read.
1516+ queryParam :: (ToHttpApiData a) => Text -> Maybe a -> param
1228− queryParam :: ToHttpApiData a => Text -> Maybe a -> param
1518+ -- | Get the query parameter names and values set by 'queryParam'.
1521+ queryParamToList :: param -> [(Text, Maybe Text)]
1230instance QueryParam (Option scheme) where
1523instance QueryParam (Option scheme) where
1231 queryParam name mvalue =
1524 queryParam name mvalue =
1232 withQueryParams ((:) (name, toQueryParam <$> mvalue))
1525 withQueryParams ((:) (name, toQueryParam <$> mvalue))
1526+ queryParamToList (Option f _) = fst $ appEndo f ([], L.defaultRequest)
1234----------------------------------------------------------------------------
1528----------------------------------------------------------------------------
1235-- Request—Optional parameters—Headers
1529-- Request—Optional parameters—Headers
@@ -1238,20 +1532,28 @@ instance QueryParam (Option scheme) where
1238-- headers with the same names the leftmost header will win. This means, in
1532-- headers with the same names the leftmost header will win. This means, in
1239-- particular, that you cannot create a request with several headers of the
1533-- particular, that you cannot create a request with several headers of the
1240-- same name.
1534-- same name.
1242−header
1535+header ::
1243− :: ByteString -- ^ Header name
1536+ -- | Header name
1244− -> ByteString -- ^ Header value
1538+ -- | Header value
1245− -> Option scheme
1540+ Option scheme
1246header name value = withRequest (attachHeader name value)
1541header name value = withRequest (attachHeader name value)
1248-- | Attach a header with given name and content to a 'L.Request'.
1543-- | Attach a header with given name and content to a 'L.Request'.
1250-- @since 1.1.0
1545-- @since 1.1.0
1252attachHeader :: ByteString -> ByteString -> L.Request -> L.Request
1546attachHeader :: ByteString -> ByteString -> L.Request -> L.Request
1253attachHeader name value x =
1547attachHeader name value x =
1254− x { L.requestHeaders = (CI.mk name, value) : L.requestHeaders x }
1548+ x {L.requestHeaders = (CI.mk name, value) : L.requestHeaders x}
1550+-- | Same as 'header', but with redacted values on print.
1553+headerRedacted :: ByteString -> ByteString -> Option scheme
1554+headerRedacted name value = withRequest $ \x ->
1555+ let y = attachHeader name value x
1556+ in y {L.redactHeaders = CI.mk name `S.insert` L.redactHeaders y}
1256----------------------------------------------------------------------------
1558----------------------------------------------------------------------------
1257-- Request—Optional parameters—Cookies
1559-- Request—Optional parameters—Cookies
@@ -1264,10 +1566,9 @@ attachHeader name value x =
1265-- | Use the given 'L.CookieJar'. A 'L.CookieJar' can be obtained from a
1567-- | Use the given 'L.CookieJar'. A 'L.CookieJar' can be obtained from a
1266-- 'L.Response' record.
1568-- 'L.Response' record.
1268cookieJar :: L.CookieJar -> Option scheme
1569cookieJar :: L.CookieJar -> Option scheme
1269cookieJar jar = withRequest $ \x ->
1570cookieJar jar = withRequest $ \x ->
1270− x { L.cookieJar = Just jar }
1571+ x {L.cookieJar = Just jar}
1272----------------------------------------------------------------------------
1573----------------------------------------------------------------------------
1273-- Request—Optional parameters—Authentication
1574-- Request—Optional parameters—Authentication
@@ -1285,11 +1586,13 @@ cookieJar jar = withRequest $ \x ->
1285-- | The 'Option' adds basic authentication.
1586-- | The 'Option' adds basic authentication.
1287-- See also: <https://en.wikipedia.org/wiki/Basic_access_authentication>.
1588-- See also: <https://en.wikipedia.org/wiki/Basic_access_authentication>.
1289−basicAuth
1589+basicAuth ::
1290− :: ByteString -- ^ Username
1590+ -- | Username
1291− -> ByteString -- ^ Password
1591+ ByteString ->
1292− -> Option 'Https -- ^ Auth 'Option'
1594+ -- | Auth 'Option'
1293basicAuth = basicAuthUnsafe
1596basicAuth = basicAuthUnsafe
1295-- | An alternative to 'basicAuth' which works for any scheme. Note that
1598-- | An alternative to 'basicAuth' which works for any scheme. Note that
@@ -1297,41 +1600,52 @@ basicAuth = basicAuthUnsafe
1297-- attacks. Use 'basicAuth' instead unless you know what you are doing.
1600-- attacks. Use 'basicAuth' instead unless you know what you are doing.
1299-- @since 0.3.1
1602-- @since 0.3.1
1301−basicAuthUnsafe
1603+basicAuthUnsafe ::
1302− :: ByteString -- ^ Username
1604+ -- | Username
1303− -> ByteString -- ^ Password
1605+ ByteString ->
1304− -> Option scheme -- ^ Auth 'Option'
1609+ Option scheme
1305−basicAuthUnsafe username password = customAuth
1610+basicAuthUnsafe username password =
1306− (pure . L.applyBasicAuth username password)
1612+ (pure . L.applyBasicAuth username password)
1308-- | The 'Option' set basic proxy authentication header.
1614-- | The 'Option' set basic proxy authentication header.
1310-- @since 1.1.0
1616-- @since 1.1.0
1312−basicProxyAuth
1617+basicProxyAuth ::
1313− :: ByteString -- ^ Username
1618+ -- | Username
1314− -> ByteString -- ^ Password
1619+ ByteString ->
1315− -> Option scheme -- ^ Auth 'Option'
1622+ -- | Auth 'Option'
1316basicProxyAuth username password =
1624basicProxyAuth username password =
1317 withRequest (L.applyBasicProxyAuth username password)
1625 withRequest (L.applyBasicProxyAuth username password)
1319-- | The 'Option' adds OAuth1 authentication.
1627-- | The 'Option' adds OAuth1 authentication.
1321-- @since 0.2.0
1629-- @since 0.2.0
1323−oAuth1
1630+oAuth1 ::
1324− :: ByteString -- ^ Consumer token
1631+ -- | Consumer token
1325− -> ByteString -- ^ Consumer secret
1633+ -- | Consumer secret
1326− -> ByteString -- ^ OAuth token
1634+ ByteString ->
1327− -> ByteString -- ^ OAuth token secret
1637+ -- | OAuth token secret
1328− -> Option scheme -- ^ Auth 'Option'
1639+ -- | Auth 'Option'
1329oAuth1 consumerToken consumerSecret token tokenSecret =
1641oAuth1 consumerToken consumerSecret token tokenSecret =
1330 customAuth (OAuth.signOAuth app creds)
1642 customAuth (OAuth.signOAuth app creds)
1332− app = OAuth.newOAuth
1645+ OAuth.newOAuth
1333− { OAuth.oauthConsumerKey = consumerToken
1646+ { OAuth.oauthConsumerKey = consumerToken,
1334− , OAuth.oauthConsumerSecret = consumerSecret }
1647+ OAuth.oauthConsumerSecret = consumerSecret
1335 creds = OAuth.newCredential token tokenSecret
1649 creds = OAuth.newCredential token tokenSecret
1337-- | The 'Option' adds an OAuth2 bearer token. This is treated by many
1651-- | The 'Option' adds an OAuth2 bearer token. This is treated by many
@@ -1342,12 +1656,14 @@ oAuth1 consumerToken consumerSecret token tokenSecret =
1342-- > oAuth2Bearer token = header "Authorization" ("Bearer " <> token)
1656-- > oAuth2Bearer token = header "Authorization" ("Bearer " <> token)
1344-- See also: <https://en.wikipedia.org/wiki/OAuth>.
1658-- See also: <https://en.wikipedia.org/wiki/OAuth>.
1346−oAuth2Bearer
1659+oAuth2Bearer ::
1347− :: ByteString -- ^ Token
1661+ ByteString ->
1348− -> Option 'Https -- ^ Auth 'Option'
1662+ -- | Auth 'Option'
1349−oAuth2Bearer token = customAuth
1664+oAuth2Bearer token =
1350− (pure . attachHeader "Authorization" ("Bearer " <> token))
1666+ (pure . attachHeader "Authorization" ("Bearer " <> token))
1352-- | The 'Option' adds a not-quite-standard OAuth2 bearer token (that seems
1668-- | The 'Option' adds a not-quite-standard OAuth2 bearer token (that seems
1353-- to be used only by GitHub). This will be treated by whatever services
1669-- to be used only by GitHub). This will be treated by whatever services
@@ -1358,19 +1674,20 @@ oAuth2Bearer token = customAuth
1358-- > oAuth2Token token = header "Authorization" ("token" <> token)
1674-- > oAuth2Token token = header "Authorization" ("token" <> token)
1360-- See also: <https://developer.github.com/v3/oauth#3-use-the-access-token-to-access-the-api>.
1676-- See also: <https://developer.github.com/v3/oauth#3-use-the-access-token-to-access-the-api>.
1362−oAuth2Token
1677+oAuth2Token ::
1363− :: ByteString -- ^ Token
1679+ ByteString ->
1364− -> Option 'Https -- ^ Auth 'Option'
1680+ -- | Auth 'Option'
1365−oAuth2Token token = customAuth
1682+oAuth2Token token =
1366− (pure . attachHeader "Authorization" ("token " <> token))
1684+ (pure . attachHeader "Authorization" ("token " <> token))
1368-- | A helper to create custom authentication 'Option's. The given
1686-- | A helper to create custom authentication 'Option's. The given
1369-- 'IO'-enabled request transformation is applied after all other
1687-- 'IO'-enabled request transformation is applied after all other
1370-- modifications when constructing a request. Use wisely.
1688-- modifications when constructing a request. Use wisely.
1372-- @since 1.1.0
1690-- @since 1.1.0
1374customAuth :: (L.Request -> IO L.Request) -> Option scheme
1691customAuth :: (L.Request -> IO L.Request) -> Option scheme
1375customAuth = Option mempty . pure
1692customAuth = Option mempty . pure
@@ -1379,11 +1696,10 @@ customAuth = Option mempty . pure
1380-- | Specify the port to connect to explicitly. Normally, 'Url' you use
1697-- | Specify the port to connect to explicitly. Normally, 'Url' you use
1381-- determines the default port: @80@ for HTTP and @443@ for HTTPS. This
1698-- determines the default port: @80@ for HTTP and @443@ for HTTPS. This
1382−-- 'Option' allows to choose an arbitrary port overwriting the defaults.
1699+-- 'Option' allows us to choose an arbitrary port overwriting the defaults.
1384port :: Int -> Option scheme
1700port :: Int -> Option scheme
1385port n = withRequest $ \x ->
1701port n = withRequest $ \x ->
1386− x { L.port = n }
1702+ x {L.port = n}
1388-- | This 'Option' controls whether gzipped data should be decompressed on
1704-- | This 'Option' controls whether gzipped data should be decompressed on
1389-- the fly. By default everything except for @\"application\/x-tar\"@ is
1705-- the fly. By default everything except for @\"application\/x-tar\"@ is
@@ -1394,39 +1710,40 @@ port n = withRequest $ \x ->
1394-- You can also choose to decompress everything like this:
1710-- You can also choose to decompress everything like this:
1396-- > decompress (const True)
1712-- > decompress (const True)
1398−decompress
1713+decompress ::
1399− :: (ByteString -> Bool) -- ^ Predicate that is given MIME type, it
1714+ -- | Predicate that is given MIME type, it returns 'True' when content
1400− -- returns 'True' when content should be decompressed on the fly.
1715+ -- should be decompressed on the fly.
1716+ (ByteString -> Bool) ->
1401− -> Option scheme
1717+ Option scheme
1402decompress f = withRequest $ \x ->
1718decompress f = withRequest $ \x ->
1403− x { L.decompress = f }
1719+ x {L.decompress = f}
1405-- | Specify the number of microseconds to wait for response. The default
1721-- | Specify the number of microseconds to wait for response. The default
1406-- value is 30 seconds (defined in 'L.ManagerSettings' of connection
1722-- value is 30 seconds (defined in 'L.ManagerSettings' of connection
1407-- 'L.Manager').
1723-- 'L.Manager').
1409−responseTimeout
1724+responseTimeout ::
1410− :: Int -- ^ Number of microseconds to wait
1725+ -- | Number of microseconds to wait
1411− -> Option scheme
1727+ Option scheme
1412responseTimeout n = withRequest $ \x ->
1728responseTimeout n = withRequest $ \x ->
1413− x { L.responseTimeout = LI.ResponseTimeoutMicro n }
1729+ x {L.responseTimeout = LI.ResponseTimeoutMicro n}
1415-- | HTTP version to send to the server, the default is HTTP 1.1.
1731-- | HTTP version to send to the server, the default is HTTP 1.1.
1417−httpVersion
1732+httpVersion ::
1418− :: Int -- ^ Major version number
1733+ -- | Major version number
1419− -> Int -- ^ Minor version number
1735+ -- | Minor version number
1420− -> Option scheme
1737+ Option scheme
1421httpVersion major minor = withRequest $ \x ->
1738httpVersion major minor = withRequest $ \x ->
1422− x { L.requestVersion = Y.HttpVersion major minor }
1739+ x {L.requestVersion = Y.HttpVersion major minor}
1424----------------------------------------------------------------------------
1741----------------------------------------------------------------------------
1425-- Response interpretations
1742-- Response interpretations
1427-- | Make a request and ignore the body of the response.
1744-- | Make a request and ignore the body of the response.
1429newtype IgnoreResponse = IgnoreResponse (L.Response ())
1745newtype IgnoreResponse = IgnoreResponse (L.Response ())
1431instance HttpResponse IgnoreResponse where
1748instance HttpResponse IgnoreResponse where
1432 type HttpResponseBody IgnoreResponse = ()
1749 type HttpResponseBody IgnoreResponse = ()
@@ -1435,7 +1752,6 @@ instance HttpResponse IgnoreResponse where
1436-- | Use this as the fourth argument of 'req' to specify that you want it to
1753-- | Use this as the fourth argument of 'req' to specify that you want it to
1437-- ignore the response body.
1754-- ignore the response body.
1439ignoreResponse :: Proxy IgnoreResponse
1755ignoreResponse :: Proxy IgnoreResponse
1440ignoreResponse = Proxy
1756ignoreResponse = Proxy
@@ -1443,28 +1759,28 @@ ignoreResponse = Proxy
1443-- 'handleHttpException' method of 'MonadHttp' instance corresponding to
1759-- 'handleHttpException' method of 'MonadHttp' instance corresponding to
1444-- monad in which you use 'req' will determine what to do in the case when
1760-- monad in which you use 'req' will determine what to do in the case when
1445-- parsing fails (the 'JsonHttpException' constructor will be used).
1761-- parsing fails (the 'JsonHttpException' constructor will be used).
1447newtype JsonResponse a = JsonResponse (L.Response a)
1762newtype JsonResponse a = JsonResponse (L.Response a)
1449−instance FromJSON a => HttpResponse (JsonResponse a) where
1765+instance (FromJSON a) => HttpResponse (JsonResponse a) where
1450 type HttpResponseBody (JsonResponse a) = a
1766 type HttpResponseBody (JsonResponse a) = a
1451 toVanillaResponse (JsonResponse r) = r
1767 toVanillaResponse (JsonResponse r) = r
1452 getHttpResponse r = do
1768 getHttpResponse r = do
1453 chunks <- L.brConsume (L.responseBody r)
1769 chunks <- L.brConsume (L.responseBody r)
1454 case A.eitherDecode (BL.fromChunks chunks) of
1770 case A.eitherDecode (BL.fromChunks chunks) of
1455− Left e -> throwIO (JsonHttpException e)
1771+ Left e -> throwIO (JsonHttpException e)
1456 Right x -> return $ JsonResponse (x <$ r)
1772 Right x -> return $ JsonResponse (x <$ r)
1773+ acceptHeader Proxy = Just "application/json"
1458-- | Use this as the fourth argument of 'req' to specify that you want it to
1775-- | Use this as the fourth argument of 'req' to specify that you want it to
1459-- return the 'JsonResponse' interpretation.
1776-- return the 'JsonResponse' interpretation.
1461jsonResponse :: Proxy (JsonResponse a)
1777jsonResponse :: Proxy (JsonResponse a)
1462jsonResponse = Proxy
1778jsonResponse = Proxy
1464-- | Make a request and interpret the body of the response as a strict
1780-- | Make a request and interpret the body of the response as a strict
1465-- 'ByteString'.
1781-- 'ByteString'.
1467newtype BsResponse = BsResponse (L.Response ByteString)
1782newtype BsResponse = BsResponse (L.Response ByteString)
1469instance HttpResponse BsResponse where
1785instance HttpResponse BsResponse where
1470 type HttpResponseBody BsResponse = ByteString
1786 type HttpResponseBody BsResponse = ByteString
@@ -1475,14 +1791,13 @@ instance HttpResponse BsResponse where
1476-- | Use this as the fourth argument of 'req' to specify that you want to
1792-- | Use this as the fourth argument of 'req' to specify that you want to
1477-- interpret the response body as a strict 'ByteString'.
1793-- interpret the response body as a strict 'ByteString'.
1479bsResponse :: Proxy BsResponse
1794bsResponse :: Proxy BsResponse
1480bsResponse = Proxy
1795bsResponse = Proxy
1482-- | Make a request and interpret the body of the response as a lazy
1797-- | Make a request and interpret the body of the response as a lazy
1483-- 'BL.ByteString'.
1798-- 'BL.ByteString'.
1485newtype LbsResponse = LbsResponse (L.Response BL.ByteString)
1799newtype LbsResponse = LbsResponse (L.Response BL.ByteString)
1487instance HttpResponse LbsResponse where
1802instance HttpResponse LbsResponse where
1488 type HttpResponseBody LbsResponse = BL.ByteString
1803 type HttpResponseBody LbsResponse = BL.ByteString
@@ -1493,24 +1808,22 @@ instance HttpResponse LbsResponse where
1494-- | Use this as the fourth argument of 'req' to specify that you want to
1809-- | Use this as the fourth argument of 'req' to specify that you want to
1495-- interpret the response body as a lazy 'BL.ByteString'.
1810-- interpret the response body as a lazy 'BL.ByteString'.
1497lbsResponse :: Proxy LbsResponse
1811lbsResponse :: Proxy LbsResponse
1498lbsResponse = Proxy
1812lbsResponse = Proxy
1500----------------------------------------------------------------------------
1814----------------------------------------------------------------------------
1501-- Helpers for response interpretations
1815-- Helpers for response interpretations
1503−-- | Fetch beginning of response and return it together with new
1817+-- | Fetch beginning of the response and return it together with a new
1504-- @'L.Response' 'L.BodyReader'@ that can be passed to 'getHttpResponse' and
1818-- @'L.Response' 'L.BodyReader'@ that can be passed to 'getHttpResponse' and
1507−grabPreview
1820+grabPreview ::
1509− -- ^ How many bytes to fetch
1821+ -- | How many bytes to fetch
1823+ -- | Response with body reader inside
1510− -> L.Response L.BodyReader
1824+ L.Response L.BodyReader ->
1511− -- ^ Response with body reader inside
1825+ -- | Preview 'ByteString' and new response with body reader inside
1512− -> IO (ByteString, L.Response L.BodyReader)
1826+ IO (ByteString, L.Response L.BodyReader)
1513− -- ^ Preview 'ByteString' and new response with body reader inside
1514grabPreview nbytes r = do
1827grabPreview nbytes r = do
1515 let br = L.responseBody r
1828 let br = L.responseBody r
1516 (target, leftover, done) <- brReadN br nbytes
1829 (target, leftover, done) <- brReadN br nbytes
@@ -1533,18 +1846,17 @@ grabPreview nbytes r = do
1534 then return B.empty
1847 then return B.empty
1536− return (target, r { L.responseBody = br' })
1849+ return (target, r {L.responseBody = br'})
1538-- | Consume N bytes from 'L.BodyReader', return the target chunk, the
1851-- | Consume N bytes from 'L.BodyReader', return the target chunk, the
1539-- leftover (may be empty), and whether we're done consuming the body.
1852-- leftover (may be empty), and whether we're done consuming the body.
1541−brReadN
1853+brReadN ::
1543− -- ^ Body reader to stream from
1854+ -- | Body reader to stream from
1544− -> Int
1855+ L.BodyReader ->
1545− -- ^ How many bytes to consume
1856+ -- | How many bytes to consume
1546− -> IO (ByteString, ByteString, Bool)
1857+ Int ->
1547− -- ^ Target chunk, the leftover, whether we're done
1858+ -- | Target chunk, the leftover, whether we're done
1859+ IO (ByteString, ByteString, Bool)
1548brReadN br n = go 0 id id
1860brReadN br n = go 0 id id
1550 go !tlen t l = do
1862 go !tlen t l = do
@@ -1553,9 +1865,9 @@ brReadN br n = go 0 id id
1553 then return (r t, r l, True)
1865 then return (r t, r l, True)
1555 let (target, leftover) = B.splitAt (n - tlen) chunk
1867 let (target, leftover) = B.splitAt (n - tlen) chunk
1556− tlen' = B.length target
1868+ tlen' = B.length target
1557− t' = t . (target:)
1869+ t' = t . (target :)
1558− l' = l . (leftover:)
1870+ l' = l . (leftover :)
1559 if tlen + tlen' < n
1871 if tlen + tlen' < n
1560 then go (tlen + tlen') t' l'
1872 then go (tlen + tlen') t' l'
1561 else return (r t', r l', False)
1873 else return (r t', r l', False)
@@ -1565,47 +1877,45 @@ brReadN br n = go 0 id id
1565-- Inspecting a response
1877-- Inspecting a response
1567-- | Get the response body.
1879-- | Get the response body.
1569−responseBody
1880+responseBody ::
1570− :: HttpResponse response
1881+ (HttpResponse response) =>
1571− => response
1882+ response ->
1572− -> HttpResponseBody response
1883+ HttpResponseBody response
1573responseBody = L.responseBody . toVanillaResponse
1884responseBody = L.responseBody . toVanillaResponse
1575-- | Get the response status code.
1886-- | Get the response status code.
1577−responseStatusCode
1887+responseStatusCode ::
1578− :: HttpResponse response
1888+ (HttpResponse response) =>
1579− => response
1889+ response ->
1581responseStatusCode =
1891responseStatusCode =
1582 Y.statusCode . L.responseStatus . toVanillaResponse
1892 Y.statusCode . L.responseStatus . toVanillaResponse
1584-- | Get the response status message.
1894-- | Get the response status message.
1586−responseStatusMessage
1895+responseStatusMessage ::
1587− :: HttpResponse response
1896+ (HttpResponse response) =>
1588− => response
1897+ response ->
1589− -> ByteString
1898+ ByteString
1590responseStatusMessage =
1899responseStatusMessage =
1591 Y.statusMessage . L.responseStatus . toVanillaResponse
1900 Y.statusMessage . L.responseStatus . toVanillaResponse
1593-- | Lookup a particular header from a response.
1902-- | Lookup a particular header from a response.
1595−responseHeader
1903+responseHeader ::
1596− :: HttpResponse response
1904+ (HttpResponse response) =>
1597− => response -- ^ Response interpretation
1905+ -- | Response interpretation
1598− -> ByteString -- ^ Header to lookup
1907+ -- | Header to lookup
1599− -> Maybe ByteString -- ^ Header value if found
1909+ -- | Header value if found
1600responseHeader r h =
1911responseHeader r h =
1601 (lookup (CI.mk h) . L.responseHeaders . toVanillaResponse) r
1912 (lookup (CI.mk h) . L.responseHeaders . toVanillaResponse) r
1603-- | Get the response 'L.CookieJar'.
1914-- | Get the response 'L.CookieJar'.
1605−responseCookieJar
1915+responseCookieJar ::
1606− :: HttpResponse response
1916+ (HttpResponse response) =>
1607− => response
1917+ response ->
1608− -> L.CookieJar
1918+ L.CookieJar
1609responseCookieJar = L.responseCookieJar . toVanillaResponse
1919responseCookieJar = L.responseCookieJar . toVanillaResponse
1611----------------------------------------------------------------------------
1921----------------------------------------------------------------------------
@@ -1616,19 +1926,15 @@ responseCookieJar = L.responseCookieJar . toVanillaResponse
1616-- To create a new response interpretation you just need to make your data
1926-- To create a new response interpretation you just need to make your data
1617-- type an instance of the 'HttpResponse' type class.
1927-- type an instance of the 'HttpResponse' type class.
1619−-- | A type class for response interpretations. It allows to describe how to
1929+-- | A type class for response interpretations. It allows us to describe how
1620−-- consume response from a @'L.Response' 'L.BodyReader'@ and produce the
1930+-- to consume the response from a @'L.Response' 'L.BodyReader'@ and produce
1621−-- final result that is to be returned to the user.
1931+-- the final result that is to be returned to the user.
1623class HttpResponse response where
1932class HttpResponse response where
1625 -- | The associated type is the type of body that can be extracted from an
1933 -- | The associated type is the type of body that can be extracted from an
1626 -- instance of 'HttpResponse'.
1934 -- instance of 'HttpResponse'.
1628− type HttpResponseBody response :: *
1935+ type HttpResponseBody response :: Type
1630 -- | The method describes how to get the underlying 'L.Response' record.
1937 -- | The method describes how to get the underlying 'L.Response' record.
1632 toVanillaResponse :: response -> L.Response (HttpResponseBody response)
1938 toVanillaResponse :: response -> L.Response (HttpResponseBody response)
1634 -- | This method describes how to consume response body and, more
1940 -- | This method describes how to consume response body and, more
@@ -1644,12 +1950,32 @@ class HttpResponse response where
1645 -- __Note__: signature of this function was changed in the version
1951 -- __Note__: signature of this function was changed in the version
1646 -- /1.0.0/.
1952 -- /1.0.0/.
1954+ -- | Response with body reader inside
1955+ L.Response L.BodyReader ->
1956+ -- | The final result
1959+ -- | The value of @\"Accept\"@ header. This is useful, for example, if a
1960+ -- website supports both @XML@ and @JSON@ responses, and decides what to
1961+ -- reply with based on what @Accept@ headers you have sent.
1963+ -- __Note__: manually specified 'Options' that set the @\"Accept\"@ header
1964+ -- will take precedence.
1967+ acceptHeader :: Proxy response -> Maybe ByteString
1968+ acceptHeader Proxy = Nothing
1970+-- | This instance has been added to make it easier to inspect 'L.Response'
1971+-- using Req's functions like 'responseStatusCode', 'responseStatusMessage',
1975+instance HttpResponse (L.Response ()) where
1976+ type HttpResponseBody (L.Response ()) = ()
1977+ toVanillaResponse = id
1648− getHttpResponse
1978+ getHttpResponse = return . void
1649− :: L.Response L.BodyReader
1650− -- ^ Response with body reader inside
1652− -- ^ The final result
1654----------------------------------------------------------------------------
1980----------------------------------------------------------------------------
@@ -1661,15 +1987,12 @@ class HttpResponse response where
1661-- request components easier using @('<>')@.
1987-- request components easier using @('<>')@.
1663-- __Note__: this type class is not a part of the public API.
1989-- __Note__: this type class is not a part of the public API.
1665class RequestComponent a where
1990class RequestComponent a where
1667 -- | Get a function that takes a 'L.Request' and changes it somehow
1991 -- | Get a function that takes a 'L.Request' and changes it somehow
1668 -- returning another 'L.Request'. For example, the 'HttpMethod' instance
1992 -- returning another 'L.Request'. For example, the 'HttpMethod' instance
1669 -- of 'RequestComponent' just overwrites method. The function is wrapped
1993 -- of 'RequestComponent' just overwrites method. The function is wrapped
1670 -- in 'Endo' so it's easier to chain such “modifying applications”
1994 -- in 'Endo' so it's easier to chain such “modifying applications”
1671 -- together building bigger and bigger 'RequestComponent's.
1995 -- together building bigger and bigger 'RequestComponent's.
1673 getRequestMod :: a -> Endo L.Request
1996 getRequestMod :: a -> Endo L.Request
1675-- | This wrapper is only used to attach a type-level tag to a given type.
1998-- | This wrapper is only used to attach a type-level tag to a given type.
@@ -1679,44 +2002,50 @@ class RequestComponent a where
1679-- method@ and @'HttpBody' body => 'RequestComponent' body@ when it decides
2002-- method@ and @'HttpBody' body => 'RequestComponent' body@ when it decides
1680-- which instance to use (i.e. the constraints are taken into account later,
2003-- which instance to use (i.e. the constraints are taken into account later,
1681-- when instance is already chosen).
2004-- when instance is already chosen).
1683−newtype Womb (tag :: Symbol) a = Womb a
2005+newtype Tagged (tag :: Symbol) a = Tagged a
1685-- | Exceptions that this library throws.
2007-- | Exceptions that this library throws.
1687data HttpException
2008data HttpException
1688− = VanillaHttpException L.HttpException
1689− -- ^ A wrapper with an 'L.HttpException' from "Network.HTTP.Client"
2009+ = -- | A wrapper with an 'L.HttpException' from "Network.HTTP.Client"
1690− | JsonHttpException String
2010+ VanillaHttpException L.HttpException
1691− -- ^ A wrapper with Aeson-produced 'String' describing why decoding
2011+ | -- | A wrapper with Aeson-produced 'String' describing why decoding
1692 -- failed
2012 -- failed
2013+ JsonHttpException String
1693− deriving (Show, Typeable, Generic)
2014+ deriving (Show, Generic)
1695instance Exception HttpException
2016instance Exception HttpException
2018+-- | Return 'Just' if the given 'HttpException' is wrapping a http-client's
2019+-- 'L.StatusCodeException'. Otherwise, return 'Nothing'.
2022+isStatusCodeException :: HttpException -> Maybe (L.Response ())
2023+isStatusCodeException
2024+ ( VanillaHttpException
2025+ ( L.HttpExceptionRequest
2027+ (L.StatusCodeException r _)
2030+isStatusCodeException _ = Nothing
1697-- | A simple type isomorphic to 'Bool' that we only have for better error
2032-- | A simple type isomorphic to 'Bool' that we only have for better error
1698-- messages. We use it as a kind and its data constructors as type-level
2033-- messages. We use it as a kind and its data constructors as type-level
1701-- See also: 'HttpMethod' and 'HttpBody'.
2036-- See also: 'HttpMethod' and 'HttpBody'.
1703data CanHaveBody
2037data CanHaveBody
1704− = CanHaveBody -- ^ Indeed can have a body
2038+ = -- | Indeed can have a body
1705− | NoBody -- ^ Should not have a body
2040+ | -- | Should not have a body
1707-- | A type-level tag that specifies URL scheme used (and thus if HTTPS is
2043-- | A type-level tag that specifies URL scheme used (and thus if HTTPS is
1708-- enabled). This is used to force TLS requirement for some authentication
2044-- enabled). This is used to force TLS requirement for some authentication
1709-- 'Option's.
2045-- 'Option's.
1711data Scheme
2046data Scheme
1712− = Http -- ^ HTTP
2048+ Http
1713− | Https -- ^ HTTPS
2050+ Https
1714− deriving (Eq, Ord, Show, Data, Typeable, Generic)
2051+ deriving (Eq, Ord, Show, Data, Generic, TH.Lift)
1716−----------------------------------------------------------------------------
1719−-- | Max length of preview fragment of response body.
1721−bodyPreviewLength :: Num a => a
1722−bodyPreviewLength = 1024