Network.HTTP.Types

General

type Ascii = ByteString

Type synonym for ASCII ByteStrings (deprecated).

Methods

type Method = ByteString

HTTP method (flat string type).

methodGet, methodOptions, methodConnect, methodTrace, methodDelete, methodPut, methodHead, methodPost :: Method

HTTP Method constants.

data StdMethod

HTTP standard method (as defined by RFC 2616).

Constructors

GET

POST

HEAD

PUT

DELETE

TRACE

CONNECT

OPTIONS

Instances

Bounded StdMethod

Enum StdMethod

Eq StdMethod

Ord StdMethod

Read StdMethod

Show StdMethod

Ix StdMethod

parseMethod :: Method -> Either ByteString StdMethod

Convert a method ByteString to a StdMethod if possible.

renderMethod :: Either ByteString StdMethod -> Method

Convert an algebraic method to a ByteString.

renderStdMethod :: StdMethod -> Method

Convert a StdMethod to a ByteString.

Versions

data HttpVersion

HTTP Version.

Note that the Show instance is intended merely for debugging.

Constructors

HttpVersion

Fields

httpMajor :: !Int

httpMinor :: !Int

Instances

Eq HttpVersion

Ord HttpVersion

Show HttpVersion

http09 :: HttpVersion

HTTP 0.9

http10 :: HttpVersion

HTTP 1.0

http11 :: HttpVersion

HTTP 1.1

Status

data Status

HTTP Status.

Only the statusCode is used for comparisons.

Note that the Show instance is only for debugging.

Constructors

Status

Fields

statusCode :: Int

statusMessage :: ByteString

Instances

Eq Status

Ord Status

Show Status

status100 :: Status

Continue 100

continue100 :: Status

Continue 100

status101 :: Status

Switching Protocols 101

switchingProtocols101 :: Status

Switching Protocols 101

status200 :: Status

OK 200

ok200 :: Status

OK 200

status201 :: Status

Created 201

created201 :: Status

Created 201

status202 :: Status

Accepted 202

accepted202 :: Status

Accepted 202

status203 :: Status

Non-Authoritative Information 203

nonAuthoritative203 :: Status

Non-Authoritative Information 203

status204 :: Status

No Content 204

noContent204 :: Status

No Content 204

status205 :: Status

Reset Content 205

resetContent205 :: Status

Reset Content 205

status206 :: Status

Partial Content 206

partialContent206 :: Status

Partial Content 206

status300 :: Status

Multiple Choices 300

multipleChoices300 :: Status

Multiple Choices 300

status301 :: Status

Moved Permanently 301

movedPermanently301 :: Status

Moved Permanently 301

status302 :: Status

Found 302

found302 :: Status

Found 302

status303 :: Status

See Other 303

seeOther303 :: Status

See Other 303

status304 :: Status

Not Modified 304

notModified304 :: Status

Not Modified 304

status305 :: Status

Use Proxy 305

useProxy305 :: Status

Use Proxy 305

status307 :: Status

Temporary Redirect 307

temporaryRedirect307 :: Status

Temporary Redirect 307

status400 :: Status

Bad Request 400

badRequest400 :: Status

Bad Request 400

status401 :: Status

Unauthorized 401

unauthorized401 :: Status

Unauthorized 401

status402 :: Status

Payment Required 402

paymentRequired402 :: Status

Payment Required 402

status403 :: Status

Forbidden 403

forbidden403 :: Status

Forbidden 403

status404 :: Status

Not Found 404

notFound404 :: Status

Not Found 404

status405 :: Status

Method Not Allowed 405

methodNotAllowed405 :: Status

Method Not Allowed 405

status406 :: Status

Not Acceptable 406

notAcceptable406 :: Status

Not Acceptable 406

status407 :: Status

Proxy Authentication Required 407

proxyAuthenticationRequired407 :: Status

Proxy Authentication Required 407

status408 :: Status

Request Timeout 408

requestTimeout408 :: Status

Request Timeout 408

status409 :: Status

Conflict 409

conflict409 :: Status

Conflict 409

status410 :: Status

Gone 410

gone410 :: Status

Gone 410

status411 :: Status

Length Required 411

lengthRequired411 :: Status

Length Required 411

status412 :: Status

Precondition Failed 412

preconditionFailed412 :: Status

Precondition Failed 412

status413 :: Status

Request Entity Too Large 413

requestEntityTooLarge413 :: Status

Request Entity Too Large 413

status414 :: Status

Request-URI Too Long 414

requestURITooLong414 :: Status

Request-URI Too Long 414

status415 :: Status

Unsupported Media Type 415

unsupportedMediaType415 :: Status

Unsupported Media Type 415

status416 :: Status

Requested Range Not Satisfiable 416

requestedRangeNotSatisfiable416 :: Status

Requested Range Not Satisfiable 416

status417 :: Status

Expectation Failed 417

expectationFailed417 :: Status

Expectation Failed 417

status418 :: Status

I'm a teapot 418

imATeaPot418 :: Status

I'm a teapot 418

status500 :: Status

Internal Server Error 500

internalServerError500 :: Status

Internal Server Error 500

status501 :: Status

Not Implemented 501

notImplemented501 :: Status

Not Implemented 501

status502 :: Status

Bad Gateway 502

badGateway502 :: Status

Bad Gateway 502

status503 :: Status

Service Unavailable 503

serviceUnavailable503 :: Status

Service Unavailable 503

status504 :: Status

Gateway Timeout 504

gatewayTimeout504 :: Status

Gateway Timeout 504

status505 :: Status

HTTP Version Not Supported 505

httpVersionNotSupported505 :: Status

HTTP Version Not Supported 505

Headers

Types

type Header = (HeaderName, ByteString)

Header

type RequestHeaders = [Header]

Request Headers

type ResponseHeaders = [Header]

Response Headers

Common headers

hAccept, hUserAgent, hServer, hReferer, hRange, hLocation, hLastModified, hIfRange, hIfModifiedSince, hDate, hCookie, hContentType, hContentMD5, hContentLength, hContentEncoding, hConnection, hCacheControl, hAuthorization, hAcceptLanguage :: HeaderName

HTTP Header names

Byte ranges

data ByteRange

RFC 2616 Byte range (individual).

Negative indices are not allowed!

Constructors

ByteRangeFrom !Integer

ByteRangeFromTo !Integer !Integer

ByteRangeSuffix !Integer

renderByteRangeBuilder :: ByteRange -> Builder

renderByteRange :: ByteRange -> ByteString

type ByteRanges = [ByteRange]

RFC 2616 Byte ranges (set).

renderByteRangesBuilder :: ByteRanges -> Builder

renderByteRanges :: ByteRanges -> ByteString

URI

Query string

type QueryItem = (ByteString, Maybe ByteString)

Query item

type Query = [QueryItem]

Query.

General form: a=b&c=d, but if the value is Nothing, it becomes a&c=d.

type SimpleQueryItem = (ByteString, ByteString)

Simplified Query item type without support for parameter-less items.

type SimpleQuery = [SimpleQueryItem]

Simplified Query type without support for parameter-less items.

simpleQueryToQuery :: SimpleQuery -> Query

Convert SimpleQuery to Query.

renderQuery

Arguments

:: Bool

prepend question mark?

-> Query

-> ByteString

Convert Query to ByteString.

renderQueryBuilder

Arguments

:: Bool

prepend a question mark?

-> Query

-> Builder

Convert Query to a Builder.

renderSimpleQuery

Arguments

:: Bool

prepend question mark?

-> SimpleQuery

-> ByteString

Convert SimpleQuery to ByteString.

parseQuery :: ByteString -> Query

Split out the query string into a list of keys and values. A few importants points:

• The result returned is still bytestrings, since we perform no character decoding here. Most likely, you will want to use UTF-8 decoding, but this is left to the user of the library.
• Percent decoding errors are ignored. In particular, %Q will be output as %Q.

parseSimpleQuery :: ByteString -> SimpleQuery

Parse SimpleQuery from a ByteString.

Text query string (UTF8 encoded)

type QueryText = [(Text, Maybe Text)]

Like Query, but with Text instead of ByteString (UTF8-encoded).

queryTextToQuery :: QueryText -> Query

Convert QueryText to Query.

queryToQueryText :: Query -> QueryText

Convert Query to QueryText (leniently decoding the UTF-8).

renderQueryText

Arguments

:: Bool

prepend a question mark?

-> QueryText

-> Builder

Convert QueryText to a Builder.

parseQueryText :: ByteString -> QueryText

Parse QueryText from a ByteString. See parseQuery for details.

Generalized query types

class QueryLike a where

Types which can, and commonly are, converted to Query are in this class.

You can use lists of simple key value pairs, with ByteString (strict, or lazy: ByteString), Text, or String as the key/value types. You can also have the value type lifted into a Maybe to support keys without values; and finally it is possible to put each pair into a Maybe for key-value pairs that aren't always present.

Methods

toQuery :: a -> Query

Convert to Query.

Instances

(QueryKeyLike k, QueryValueLike v) => QueryLike [(k, v)]

(QueryKeyLike k, QueryValueLike v) => QueryLike [Maybe (k, v)]

Path segments

encodePathSegments :: [Text] -> Builder

Encodes a list of path segments into a valid URL fragment.

This function takes the following three steps:

• UTF-8 encodes the characters.
• Performs percent encoding on all unreserved characters, as well as :@=+$,
• Prepends each segment with a slash.

For example:

 encodePathSegments [\"foo\", \"bar\", \"baz\"]

"/foo/bar/baz"

 encodePathSegments [\"foo bar\", \"baz\/bin\"]

"/foo%20bar/baz%2Fbin"

 encodePathSegments [\"שלום\"]

"/%D7%A9%D7%9C%D7%95%D7%9D"

Huge thanks to Jeremy Shaw who created the original implementation of this function in web-routes and did such thorough research to determine all correct escaping procedures.

decodePathSegments :: ByteString -> [Text]

Parse a list of path segments from a valid URL fragment.

encodePathSegmentsRelative :: [Text] -> Builder

Like encodePathSegments, but without the initial slash.

Path (segments + query string)

encodePath :: [Text] -> Query -> Builder

Encode a whole path (path segments + query).

decodePath :: ByteString -> ([Text], Query)

Decode a whole path (path segments + query).

URL encoding / decoding

urlEncodeBuilder

Arguments

:: Bool

Whether input is in query string. True: Query string, False: Path element

-> ByteString

-> Builder

Percent-encoding for URLs (using Builder).

urlEncode :: Bool -> ByteString -> ByteString

Percent-encoding for URLs.

urlDecode

Arguments

:: Bool

Whether to decode + to ' '

-> ByteString

-> ByteString

Percent-decoding.

Deprecated functions

as of 0.7.0

headerAccept, headerDate, headerContentMD5, headerContentType, headerContentLength, headerConnection, headerCacheControl, headerAuthorization :: ByteString -> Header

HTTP Headers