http-conduit-2.1.8: HTTP client package with conduit interface and HTTPS support.

Safe Haskell | None
Language | Haskell98

Network.HTTP.Conduit

Contents

- Perform a request
- Datatypes
  - Request
    - Request body
- Response
- Manager
  - Settings
- Cookies
- Utility functions
- Decompression predicates
- Request bodies
- Exceptions

Description

This module contains everything you need to initiate HTTP connections. If you want a simple interface based on URLs, you can use `simpleHttp`. If you want raw power, `http` is the underlying workhorse of this package. Some examples:

    -- Just download an HTML document and print it.
    import Network.HTTP.Conduit
    import qualified Data.ByteString.Lazy as L

    main = simpleHttp "http://www.haskell.org/" >>= L.putStr

This example uses interleaved IO to write the response body to a file in constant memory space.

    import Data.Conduit.Binary (sinkFile) -- Exported from the package conduit-extra
    import Network.HTTP.Conduit
    import qualified Data.Conduit as C
    import Control.Monad.Trans.Resource (runResourceT)

    main :: IO ()
    main = do
         request <- parseUrl "http://google.com/"
         manager <- newManager tlsManagerSettings
         runResourceT $ do
             response <- http request manager
             responseBody response C.$$+- sinkFile "google.html"

The following headers are automatically set by this module, and should not be added to `requestHeaders`:

- Cookie
- Content-Length
- Transfer-Encoding

Note: In previous versions, the Host header would be set by this module in all cases. Starting from 1.6.1, if a Host header is present in `requestHeaders`, it will be used in place of the header this module would have generated. This can be useful for calling a server which utilizes virtual hosting.

Use `cookieJar` If you want to supply cookies with your request:

    {-# LANGUAGE OverloadedStrings #-}
    import Network.HTTP.Conduit
    import Network
    import Data.Time.Clock
    import Data.Time.Calendar
    import qualified Control.Exception as E
    import Network.HTTP.Types.Status (statusCode)

    past :: UTCTime
    past = UTCTime (ModifiedJulianDay 56200) (secondsToDiffTime 0)

    future :: UTCTime
    future = UTCTime (ModifiedJulianDay 562000) (secondsToDiffTime 0)

    cookie :: Cookie
    cookie = Cookie { cookie_name = "password_hash"
                    , cookie_value = "abf472c35f8297fbcabf2911230001234fd2"
                    , cookie_expiry_time = future
                    , cookie_domain = "example.com"
                    , cookie_path = "/"
                    , cookie_creation_time = past
                    , cookie_last_access_time = past
                    , cookie_persistent = False
                    , cookie_host_only = False
                    , cookie_secure_only = False
                    , cookie_http_only = False
                    }

    main = withSocketsDo $ do
         request' <- parseUrl "http://example.com/secret-page"
         manager <- newManager tlsManagerSettings
         let request = request' { cookieJar = Just $ createCookieJar [cookie] }
         (fmap Just (httpLbs request manager)) `E.catch`
                 (\(StatusCodeException s _ _) ->
                   if statusCode s==403 then (putStrLn "login failed" >> return Nothing) else return Nothing)

Any network code on Windows requires some initialization, and the network library provides withSocketsDo to perform it. Therefore, proper usage of this library will always involve calling that function at some point. The best approach is to simply call them at the beginning of your main function, such as:

    import Network.HTTP.Conduit
    import qualified Data.ByteString.Lazy as L
    import Network (withSocketsDo)

    main = withSocketsDo
         $ simpleHttp "http://www.haskell.org/" >>= L.putStr

Cookies are implemented according to RFC 6265.

Note that by default, the functions in this package will throw exceptions for non-2xx status codes. If you would like to avoid this, you should use `checkStatus`, e.g.:

    import Data.Conduit.Binary (sinkFile)
    import Network.HTTP.Conduit
    import qualified Data.Conduit as C
    import Network

    main :: IO ()
    main = withSocketsDo $ do
         request' <- parseUrl "http://www.yesodweb.com/does-not-exist"
         let request = request' { checkStatus = \_ _ _ -> Nothing }
         manager <- newManager tlsManagerSettings
         res <- httpLbs request manager
         print res

By default, when connecting to websites using HTTPS, functions in this package will throw an exception if the TLS certificate doesn't validate. To continue the HTTPS transaction even if the TLS cerficate validation fails, you should use `mkManagerSetttings` as follows:

    import Network.Connection (TLSSettings (..))
    import Network.HTTP.Conduit

    main :: IO ()
    main = do
        request <- parseUrl "https://github.com/"
        let settings = mkManagerSettings (TLSSettingsSimple True False False) Nothing
        manager <- newManager settings
        res <- httpLbs request manager
        print res

For more information, please be sure to read the documentation in the Network.HTTP.Client module.

Synopsis

- simpleHttp :: MonadIO m => String -> m ByteString
- httpLbs :: MonadIO m => Request -> Manager -> m (Response ByteString)
- http :: MonadResource m => Request -> Manager -> m (Response (ResumableSource m ByteString))
- data Proxy :: * = Proxy {
  - proxyHost :: ByteString
  - proxyPort :: Int
  }
- data RequestBody :: *
  - = RequestBodyLBS ByteString
  - | RequestBodyBS ByteString
  - | RequestBodyBuilder Int64 Builder
  - | RequestBodyStream Int64 (GivesPopper ())
  - | RequestBodyStreamChunked (GivesPopper ())
- data Request :: *
- method :: Request -> Method
- secure :: Request -> Bool
- host :: Request -> ByteString
- port :: Request -> Int
- path :: Request -> ByteString
- queryString :: Request -> ByteString
- requestHeaders :: Request -> RequestHeaders
- requestBody :: Request -> RequestBody
- proxy :: Request -> Maybe Proxy
- hostAddress :: Request -> Maybe HostAddress
- rawBody :: Request -> Bool
- decompress :: Request -> ByteString -> Bool
- redirectCount :: Request -> Int
- checkStatus :: Request -> Status -> ResponseHeaders -> CookieJar -> Maybe SomeException
- responseTimeout :: Request -> Maybe Int
- cookieJar :: Request -> Maybe CookieJar
- requestVersion :: Request -> HttpVersion
- getConnectionWrapper :: Request -> Maybe Int -> HttpException -> IO (ConnRelease, Connection, ManagedConn) -> IO (Maybe Int, (ConnRelease, Connection, ManagedConn))
- setQueryString :: [(ByteString, Maybe ByteString)] -> Request -> Request
- requestBodySource :: Int64 -> Source (ResourceT IO) ByteString -> RequestBody
- requestBodySourceChunked :: Source (ResourceT IO) ByteString -> RequestBody
- requestBodySourceIO :: Int64 -> Source IO ByteString -> RequestBody
- requestBodySourceChunkedIO :: Source IO ByteString -> RequestBody
- data Response body :: * -> *
- responseStatus :: Response body -> Status
- responseVersion :: Response body -> HttpVersion
- responseHeaders :: Response body -> ResponseHeaders
- responseBody :: Response body -> body
- responseCookieJar :: Response body -> CookieJar
- data Manager :: *
- newManager :: ManagerSettings -> IO Manager
- closeManager :: Manager -> IO ()
- withManager :: (MonadIO m, MonadBaseControl IO m) => (Manager -> ResourceT m a) -> m a
- withManagerSettings :: (MonadIO m, MonadBaseControl IO m) => ManagerSettings -> (Manager -> ResourceT m a) -> m a
- data ManagerSettings :: *
- conduitManagerSettings :: ManagerSettings
- tlsManagerSettings :: ManagerSettings
- mkManagerSettings :: TLSSettings -> Maybe SockSettings -> ManagerSettings
- managerConnCount :: ManagerSettings -> Int
- managerResponseTimeout :: ManagerSettings -> Maybe Int
- managerTlsConnection :: ManagerSettings -> IO (Maybe HostAddress -> String -> Int -> IO Connection)
- data Cookie :: * = Cookie {
  - cookie_name :: ByteString
  - cookie_value :: ByteString
  - cookie_expiry_time :: UTCTime
  - cookie_domain :: ByteString
  - cookie_path :: ByteString
  - cookie_creation_time :: UTCTime
  - cookie_last_access_time :: UTCTime
  - cookie_persistent :: Bool
  - cookie_host_only :: Bool
  - cookie_secure_only :: Bool
  - cookie_http_only :: Bool
  }
- data CookieJar :: *
- createCookieJar :: [Cookie] -> CookieJar
- destroyCookieJar :: CookieJar -> [Cookie]
- parseUrl :: MonadThrow m => String -> m Request
- applyBasicAuth :: ByteString -> ByteString -> Request -> Request
- addProxy :: ByteString -> Int -> Request -> Request
- lbsResponse :: Monad m => Response (ResumableSource m ByteString) -> m (Response ByteString)
- getRedirectedRequest :: Request -> ResponseHeaders -> CookieJar -> Int -> Maybe Request
- alwaysDecompress :: ByteString -> Bool
- browserDecompress :: ByteString -> Bool
- urlEncodedBody :: [(ByteString, ByteString)] -> Request -> Request
- data HttpException :: *
  - = StatusCodeException Status ResponseHeaders CookieJar
  - | InvalidUrlException String String
  - | TooManyRedirects [Response ByteString]
  - | UnparseableRedirect (Response ByteString)
  - | TooManyRetries
  - | HttpParserException String
  - | HandshakeFailed
  - | OverlongHeaders
  - | ResponseTimeout
  - | FailedConnectionException String Int
  - | FailedConnectionException2 String Int Bool SomeException
  - | ExpectedBlankAfter100Continue
  - | InvalidStatusLine ByteString
  - | InvalidHeader ByteString
  - | InternalIOException IOException
  - | ProxyConnectException ByteString Int (Either ByteString HttpException)
  - | NoResponseDataReceived
  - | TlsException SomeException
  - | TlsNotSupported
  - | ResponseBodyTooShort Word64 Word64
  - | InvalidChunkHeaders
  - | IncompleteHeaders
  - | InvalidDestinationHost ByteString
  - | HttpZlibException ZlibException
  - | InvalidProxyEnvironmentVariable Text Text
  - | ResponseLengthAndChunkingBothUsed
  - | TlsExceptionHostPort SomeException ByteString Int

# Perform a request

simpleHttp :: MonadIO m => String -> m ByteString

Download the specified URL, following any redirects, and return the response body.

This function will `throwIO` an `HttpException` for any response with a non-2xx status code (besides 3xx redirects up to a limit of 10 redirects). It uses `parseUrl` to parse the input. This function essentially wraps `httpLbs`.

Note: Even though this function returns a lazy bytestring, it does not utilize lazy I/O, and therefore the entire response body will live in memory. If you want constant memory usage, you'll need to use the `conduit` package and `http` directly.

Note: This function creates a new `Manager`. It should be avoided in production code.

httpLbs :: MonadIO m => Request -> Manager -> m (Response ByteString)

Download the specified `Request`, returning the results as a `Response`.

This is a simplified version of `http` for the common case where you simply want the response data as a simple datatype. If you want more power, such as interleaved actions on the response body during download, you'll need to use `http` directly. This function is defined as:

    httpLbs = lbsResponse <=< http

Even though the `Response` contains a lazy bytestring, this function does not utilize lazy I/O, and therefore the entire response body will live in memory. If you want constant memory usage, you'll need to use `conduit` packages's `Source` returned by `http`.

This function will `throwIO` an `HttpException` for any response with a non-2xx status code (besides 3xx redirects up to a limit of 10 redirects). This behavior can be modified by changing the `checkStatus` field of your request.

Note: Unlike previous versions, this function will perform redirects, as specified by the `redirectCount` setting.

http :: MonadResource m => Request -> Manager -> m (Response (ResumableSource m ByteString))

# Datatypes

data Proxy :: *

Define a HTTP proxy, consisting of a hostname and port number.

Constructors

Proxy |
Fields proxyHost :: ByteString The host name of the HTTP proxy. proxyPort :: Int The port number of the HTTP proxy.

Instances

Eq Proxy |
Ord Proxy |
Read Proxy |
Show Proxy |

data RequestBody :: *

When using one of the `RequestBodyStream` / `RequestBodyStreamChunked` constructors, you must ensure that the `GivesPopper` can be called multiple times. Usually this is not a problem.

The `RequestBodyStreamChunked` will send a chunked request body. Note that not all servers support this. Only use `RequestBodyStreamChunked` if you know the server you're sending to supports chunked request bodies.

Since 0.1.0

Constructors

RequestBodyLBS ByteString |
RequestBodyBS ByteString |
RequestBodyBuilder Int64 Builder |
RequestBodyStream Int64 (GivesPopper ()) |
RequestBodyStreamChunked (GivesPopper ()) |

Instances

IsString RequestBody | Since 0.4.12
Monoid RequestBody |

## Request

data Request :: *

All information on how to connect to a host and what should be sent in the HTTP request.

If you simply wish to download from a URL, see `parseUrl`.

The constructor for this data type is not exposed. Instead, you should use either the `def` method to retrieve a default instance, or `parseUrl` to construct from a URL, and then use the records below to make modifications. This approach allows http-client to add configuration options without breaking backwards compatibility.

For example, to construct a POST request, you could do something like:

    initReq <- parseUrl "http://www.example.com/path"
    let req = initReq
                { method = "POST"
                }

For more information, please see http://www.yesodweb.com/book/settings-types.

Since 0.1.0

method :: Request -> Method

HTTP request method, eg GET, POST.

Since 0.1.0

secure :: Request -> Bool

Whether to use HTTPS (ie, SSL).

Since 0.1.0

host :: Request -> ByteString

Requested host name, used for both the IP address to connect to and the `host` request header.

Since 0.1.0

port :: Request -> Int

The port to connect to. Also used for generating the `host` request header.

Since 0.1.0

path :: Request -> ByteString

Everything from the host to the query string.

Since 0.1.0

queryString :: Request -> ByteString

Query string appended to the path.

Since 0.1.0

requestHeaders :: Request -> RequestHeaders

Custom HTTP request headers

The Content-Length and Transfer-Encoding headers are set automatically by this module, and shall not be added to `requestHeaders`.

If not provided by the user, `Host` will automatically be set based on the `host` and `port` fields.

Moreover, the Accept-Encoding header is set implicitly to gzip for convenience by default. This behaviour can be overridden if needed, by setting the header explicitly to a different value. In order to omit the Accept-Header altogether, set it to the empty string "". If you need an empty Accept-Header (i.e. requesting the identity encoding), set it to a non-empty white-space string, e.g. " ". See RFC 2616 section 14.3 for details about the semantics of the Accept-Header field. If you request a content-encoding not supported by this module, you will have to decode it yourself (see also the `decompress` field).

Note: Multiple header fields with the same field-name will result in multiple header fields being sent and therefore it's the responsibility of the client code to ensure that the rules from RFC 2616 section 4.2 are honoured.

Since 0.1.0

requestBody :: Request -> RequestBody

Request body to be sent to the server.

Since 0.1.0

proxy :: Request -> Maybe Proxy

Optional HTTP proxy.

Since 0.1.0

hostAddress :: Request -> Maybe HostAddress

Optional resolved host address. May not be used by all backends.

Since 0.1.0

rawBody :: Request -> Bool

If `True`, a chunked and/or gzipped body will not be decoded. Use with caution.

Since 0.1.0

decompress :: Request -> ByteString -> Bool

Predicate to specify whether gzipped data should be decompressed on the fly (see `alwaysDecompress` and `browserDecompress`). Argument is the mime type. Default: browserDecompress.

Since 0.1.0

redirectCount :: Request -> Int

How many redirects to follow when getting a resource. 0 means follow no redirects. Default value: 10.

Since 0.1.0

checkStatus :: Request -> Status -> ResponseHeaders -> CookieJar -> Maybe SomeException

Check the status code. Note that this will run after all redirects are performed. Default: return a `StatusCodeException` on non-2XX responses.

Since 0.1.0

responseTimeout :: Request -> Maybe Int

Number of microseconds to wait for a response. If `Nothing`, will wait indefinitely. Default: use `managerResponseTimeout` (which by default is 30 seconds).

Since 0.1.0

cookieJar :: Request -> Maybe CookieJar

A user-defined cookie jar. If `Nothing`, no cookie handling will take place, "Cookie" headers in `requestHeaders` will be sent raw, and `responseCookieJar` will be empty.

Since 0.1.0

requestVersion :: Request -> HttpVersion

HTTP version to send to server.

Default: HTTP 1.1

Since 0.4.3

getConnectionWrapper :: Request -> Maybe Int -> HttpException -> IO (ConnRelease, Connection, ManagedConn) -> IO (Maybe Int, (ConnRelease, Connection, ManagedConn))

Wraps the calls for getting new connections. This can be useful for instituting some kind of timeouts. The first argument is the value of `responseTimeout`. Second argument is the exception to be thrown on failure.

Default: If `responseTimeout` is `Nothing`, does nothing. Otherwise, institutes timeout, and returns remaining time for `responseTimeout`.

Since 0.1.0

setQueryString :: [(ByteString, Maybe ByteString)] -> Request -> Request

Set the query string to the given key/value pairs.

Since 0.3.6

### Request body

requestBodySource :: Int64 -> Source (ResourceT IO) ByteString -> RequestBody

requestBodySourceChunked :: Source (ResourceT IO) ByteString -> RequestBody

requestBodySourceIO :: Int64 -> Source IO ByteString -> RequestBody

requestBodySourceChunkedIO :: Source IO ByteString -> RequestBody

# Response

data Response body :: * -> *

A simple representation of the HTTP response.

Since 0.1.0

Instances

Functor Response |
Foldable Response |
Traversable Response |
Eq body => Eq (Response body) |
Show body => Show (Response body) |

responseStatus :: Response body -> Status

Status code of the response.

Since 0.1.0

responseVersion :: Response body -> HttpVersion

HTTP version used by the server.

Since 0.1.0

responseHeaders :: Response body -> ResponseHeaders

Response headers sent by the server.

Since 0.1.0

responseBody :: Response body -> body

Response body sent by the server.

Since 0.1.0

responseCookieJar :: Response body -> CookieJar

Cookies set on the client after interacting with the server. If cookies have been disabled by setting `cookieJar` to `Nothing`, then this will always be empty.

Since 0.1.0

# Manager

data Manager :: *

Keeps track of open connections for keep-alive.

If possible, you should share a single `Manager` between multiple threads and requests.

Since 0.1.0

Instances

HasHttpManager Manager |

newManager :: ManagerSettings -> IO Manager

Create a `Manager`. The `Manager` will be shut down automatically via garbage collection.

Creating a new `Manager` is a relatively expensive operation, you are advised to share a single `Manager` between requests instead.

The first argument to this function is often `defaultManagerSettings`, though add-on libraries may provide a recommended replacement.

Since 0.1.0

closeManager :: Manager -> IO ()

Close all connections in a `Manager`.

Note that this doesn't affect currently in-flight connections, meaning you can safely use it without hurting any queries you may have concurrently running.

Since 0.1.0

withManager :: (MonadIO m, MonadBaseControl IO m) => (Manager -> ResourceT m a) -> m a

Deprecated: Please use newManager tlsManagerSettings

withManagerSettings :: (MonadIO m, MonadBaseControl IO m) => ManagerSettings -> (Manager -> ResourceT m a) -> m a

Deprecated: Please use newManager

## Settings

data ManagerSettings :: *

Settings for a `Manager`. Please use the `defaultManagerSettings` function and then modify individual settings. For more information, see http://www.yesodweb.com/book/settings-types.

Since 0.1.0

conduitManagerSettings :: ManagerSettings

Deprecated: Use tlsManagerSettings

tlsManagerSettings :: ManagerSettings

mkManagerSettings :: TLSSettings -> Maybe SockSettings -> ManagerSettings

managerConnCount :: ManagerSettings -> Int

Number of connections to a single host to keep alive. Default: 10.

Since 0.1.0

managerResponseTimeout :: ManagerSettings -> Maybe Int

Default timeout (in microseconds) to be applied to requests which do not provide a timeout value.

Default is 30 seconds

Since 0.1.0

managerTlsConnection :: ManagerSettings -> IO (Maybe HostAddress -> String -> Int -> IO Connection)

Create a TLS connection. Default behavior: throw an exception that TLS is not supported.

Since 0.1.0

# Cookies

data Cookie :: *

Constructors

Cookie |
Fields cookie_name :: ByteString cookie_value :: ByteString cookie_expiry_time :: UTCTime cookie_domain :: ByteString cookie_path :: ByteString cookie_creation_time :: UTCTime cookie_last_access_time :: UTCTime cookie_persistent :: Bool cookie_host_only :: Bool cookie_secure_only :: Bool cookie_http_only :: Bool

Instances

Eq Cookie |
Ord Cookie |
Read Cookie |
Show Cookie |

data CookieJar :: *

Instances

Eq CookieJar |
Read CookieJar |
Show CookieJar |
Monoid CookieJar | Since 1.9
Default CookieJar |

createCookieJar :: [Cookie] -> CookieJar

destroyCookieJar :: CookieJar -> [Cookie]

# Utility functions

parseUrl :: MonadThrow m => String -> m Request

Convert a URL into a `Request`.

This defaults some of the values in `Request`, such as setting `method` to GET and `requestHeaders` to `[]`.

Since this function uses `MonadThrow`, the return monad can be anything that is an instance of `MonadThrow`, such as `IO` or `Maybe`.

Since 0.1.0

applyBasicAuth :: ByteString -> ByteString -> Request -> Request

Add a Basic Auth header (with the specified user name and password) to the given Request. Ignore error handling:

     applyBasicAuth "user" "pass" $ fromJust $ parseUrl url

Since 0.1.0

addProxy :: ByteString -> Int -> Request -> Request

Add a proxy to the Request so that the Request when executed will use the provided proxy.

Since 0.1.0

lbsResponse :: Monad m => Response (ResumableSource m ByteString) -> m (Response ByteString)

getRedirectedRequest :: Request -> ResponseHeaders -> CookieJar -> Int -> Maybe Request

If a request is a redirection (status code 3xx) this function will create a new request from the old request, the server headers returned with the redirection, and the redirection code itself. This function returns `Nothing` if the code is not a 3xx, there is no `location` header included, or if the redirected response couldn't be parsed with `parseUrl`.

If a user of this library wants to know the url chain that results from a specific request, that user has to re-implement the redirect-following logic themselves. An example of that might look like this:

    myHttp req man = do
       (res, redirectRequests) <- (`runStateT` []) $
            'httpRedirect'
                9000
                (\req' -> do
                   res <- http req'{redirectCount=0} man
                   modify (\rqs -> req' : rqs)
                   return (res, getRedirectedRequest req' (responseHeaders res) (responseCookieJar res) (W.statusCode (responseStatus res))
                   )
                'lift'
                req
       applyCheckStatus (checkStatus req) res
       return redirectRequests

# Decompression predicates

alwaysDecompress :: ByteString -> Bool

Always decompress a compressed stream.

browserDecompress :: ByteString -> Bool

Decompress a compressed stream unless the content-type is 'application/x-tar'.

# Request bodies

Network.HTTP.Client.MultipartFormData provides an API for building form-data request bodies.

urlEncodedBody :: [(ByteString, ByteString)] -> Request -> Request

Add url-encoded parameters to the `Request`.

This sets a new `requestBody`, adds a content-type request header and changes the `method` to POST.

Since 0.1.0

# Exceptions

data HttpException :: *

Constructors

StatusCodeException Status ResponseHeaders CookieJar |
InvalidUrlException String String |
TooManyRedirects [Response ByteString] | List of encountered responses containing redirects in reverse chronological order; including last redirect, which triggered the exception and was not followed.
UnparseableRedirect (Response ByteString) | Response containing unparseable redirect.
TooManyRetries |
HttpParserException String |
HandshakeFailed |
OverlongHeaders |
ResponseTimeout |
FailedConnectionException String Int | host/port Note that in old versions of http-client and http-conduit, this exception would indicate a failed attempt to create a connection. However, since (at least) http-client 0.4, it indicates a timeout occurred while trying to establish the connection. For more information on this, see: https://github.com/snoyberg/http-client/commit/b86b1cdd91e56ee33150433dedb32954d2082621#commitcomment-10718689
FailedConnectionException2 String Int Bool SomeException | host/port/secure
ExpectedBlankAfter100Continue |
InvalidStatusLine ByteString |
InvalidHeader ByteString |
InternalIOException IOException |
ProxyConnectException ByteString Int (Either ByteString HttpException) | host/port
NoResponseDataReceived |
TlsException SomeException |
TlsNotSupported |
ResponseBodyTooShort Word64 Word64 | Expected size/actual size. Since 1.9.4
InvalidChunkHeaders | Since 1.9.4
IncompleteHeaders |
InvalidDestinationHost ByteString |
HttpZlibException ZlibException | Since 0.3
InvalidProxyEnvironmentVariable Text Text | Environment name and value Since 0.4.7
ResponseLengthAndChunkingBothUsed | Detect a case where both the `content-length` header and `transfer-encoding: chunked` are used. Since 0.4.8. Since 0.4.11 this exception isn't thrown anymore.
TlsExceptionHostPort SomeException ByteString Int | TLS exception, together with the host and port Since: 0.4.24

Instances

Show HttpException |
Exception HttpException |