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 parseUrlThrow 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.

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.

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

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

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 parseRequest.

The constructor for this data type is not exposed. Instead, you should use either the defaultRequest value, or parseRequest 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 <- parseRequest "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

HTTP request method, eg GET, POST.

Since 0.1.0

Whether to use HTTPS (ie, SSL).

Since 0.1.0

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

Since 0.1.0

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

Since 0.1.0

Everything from the host to the query string.

Since 0.1.0

Query string appended to the path.

Since 0.1.0

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

Request body to be sent to the server.

Since 0.1.0

Optional HTTP proxy.

Since 0.1.0

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

Since 0.1.0

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

Since 0.1.0

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

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

Since 0.1.0

Decide whether a header must be stripped from the request when following a redirect. Default: keep all headers intact.

Since: http-client-0.6.2

Check the response immediately after receiving the status and headers. This can be useful for throwing exceptions on non-success status codes.

In previous versions of http-client, this went under the name checkStatus, but was renamed to avoid confusion about the new default behavior (doing nothing).

Since: http-client-0.5.0

Number of microseconds to wait for a response (see HttpExceptionContent for more information). Default: use managerResponseTimeout (which by default is 30 seconds).

Since 0.1.0

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

HTTP version to send to server.

Default: HTTP 1.1

Since 0.4.3

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

Since 0.3.6

A simple representation of the HTTP response.

Since 0.1.0

Status code of the response.

Since 0.1.0

HTTP version used by the server.

Since 0.1.0

Response headers sent by the server.

Since 0.1.0

Response body sent by the server.

Since 0.1.0

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

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

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

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

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

Default TLS-enabled manager settings

Create a TLS-enabled ManagerSettings with the given TLSSettings and SockSettings

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

Since 0.1.0

Default timeout to be applied to requests which do not provide a timeout value.

Default is 30 seconds

Since: http-client-0.5.0

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

Since 0.1.0

How to deal with timing out a response

Since: http-client-0.5.0

Specify a response timeout in microseconds

Since: http-client-0.5.0

Do not have a response timeout

Since: http-client-0.5.0

Use the default response timeout

When used on a Request, means: use the manager's timeout value

When used on a ManagerSettings, means: default to 30 seconds

Since: http-client-0.5.0

Deprecated synonym for parseUrlThrow. You probably want parseRequest or parseRequest_ instead.

Since: http-client-0.1.0

Same as parseRequest, except will throw an HttpException in the event of a non-2XX response. This uses throwErrorStatusCodes to implement checkResponse.

Since: http-client-0.4.30

Convert a URL into a Request.

This function 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.

You can place the request method at the beginning of the URL separated by a space, e.g.:

@@ parseRequest "POST http://httpbin.org/post" @@

Note that the request method must be provided as all capital letters.

A Request created by this function won't cause exceptions on non-2XX response status codes.

To create a request which throws on non-2XX status codes, see parseUrlThrow

Since: http-client-0.4.30

Same as parseRequest, but parse errors cause an impure exception. Mostly useful for static strings which are known to be correctly formatted.

A default request value, a GET request of localhost/:80, with an empty request body.

Note that the default checkResponse does nothing.

Since: http-client-0.4.30

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

 applyBasicAuth "user" "pass" $ parseRequest_ url

NOTE: The function applyDigestAuth is provided by the http-client-tls package instead of this package due to extra dependencies. Please use that package if you need to use digest authentication.

Since 0.1.0

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

Since 0.1.0

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 parseRequest.

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

Always decompress a compressed stream.

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

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

An exception which may be generated by this library

Since: http-client-0.5.0