http-types-0.9.1: Generic HTTP types for Haskell (for both client and server code).

Safe HaskellNone
LanguageHaskell98

Network.HTTP.Types

Contents

Synopsis

Methods

type Method = ByteString

HTTP method (flat string type).

methodGet :: Method

HTTP Method constants.

methodPost :: Method

HTTP Method constants.

methodHead :: Method

HTTP Method constants.

methodPut :: Method

HTTP Method constants.

methodDelete :: Method

HTTP Method constants.

methodTrace :: Method

HTTP Method constants.

methodConnect :: Method

HTTP Method constants.

methodOptions :: Method

HTTP Method constants.

methodPatch :: Method

HTTP Method constants.

data StdMethod

HTTP standard method (as defined by RFC 2616, and PATCH which is defined by RFC 5789).

Constructors

GET 
POST 
HEAD 
PUT 
DELETE 
TRACE 
CONNECT 
OPTIONS 
PATCH 

Instances

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

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.

Please use mkStatus to create status codes from code and message, or the Enum instance or the status code constants (like ok200). There might be additional record members in the future.

Note that the Show instance is only for debugging.

Constructors

Status 

Fields

statusCode :: Int
 
statusMessage :: ByteString
 

Instances

mkStatus :: Int -> ByteString -> Status

Create a Status from status code and message.

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

statusIsInformational :: Status -> Bool

Informational class

statusIsSuccessful :: Status -> Bool

Successful class

statusIsRedirection :: Status -> Bool

Redirection class

statusIsClientError :: Status -> Bool

Client Error class

statusIsServerError :: Status -> Bool

Server Error class

Headers

Types

type Header = (HeaderName, ByteString)

Header

type HeaderName = CI ByteString

Header name

type RequestHeaders = [Header]

Request Headers

type ResponseHeaders = [Header]

Response Headers

Common headers

hAccept :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hAcceptLanguage :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hAuthorization :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hCacheControl :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hCookie :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hConnection :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hContentEncoding :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hContentLength :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hContentMD5 :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hContentType :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hDate :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hIfModifiedSince :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hIfRange :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hLastModified :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hLocation :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hRange :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hReferer :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hServer :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

hUserAgent :: HeaderName

HTTP Header names According to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html

Byte ranges

data ByteRange

RFC 2616 Byte range (individual).

Negative indices are not allowed!

Constructors

ByteRangeFrom !Integer 
ByteRangeFromTo !Integer !Integer 
ByteRangeSuffix !Integer 

Instances

renderByteRangeBuilder :: ByteRange -> Builder

renderByteRange :: ByteRange -> ByteString

type ByteRanges = [ByteRange]

RFC 2616 Byte ranges (set).

renderByteRangesBuilder :: ByteRanges -> Builder

renderByteRanges :: ByteRanges -> ByteString

parseByteRanges :: ByteString -> Maybe ByteRanges

Parse the value of a Range header into a ByteRanges.

>>> parseByteRanges "error"
Nothing
>>> parseByteRanges "bytes=0-499"
Just [ByteRangeFromTo 0 499]
>>> parseByteRanges "bytes=500-999"
Just [ByteRangeFromTo 500 999]
>>> parseByteRanges "bytes=-500"
Just [ByteRangeSuffix 500]
>>> parseByteRanges "bytes=9500-"
Just [ByteRangeFrom 9500]
>>> parseByteRanges "bytes=0-0,-1"
Just [ByteRangeFromTo 0 0,ByteRangeSuffix 1]
>>> parseByteRanges "bytes=500-600,601-999"
Just [ByteRangeFromTo 500 600,ByteRangeFromTo 601 999]
>>> parseByteRanges "bytes=500-700,601-999"
Just [ByteRangeFromTo 500 700,ByteRangeFromTo 601 999]

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

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)

extractPath :: ByteString -> ByteString

Extract whole path (path segments + query) from a RFC 2616 Request-URI.

>>> extractPath "/path"
"/path"

>>> extractPath "http://example.com:8080/path"
"/path"

>>> extractPath "http://example.com"
"/"

>>> extractPath ""
"/"

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

Arguments

:: Bool

Whether to decode + to ' '

-> ByteString

The ByteString to encode as URL

-> ByteString

The encoded URL

Percent-encoding for URLs.

urlDecode

Arguments

:: Bool

Whether to decode + to ' '

-> ByteString 
-> ByteString 

Percent-decoding.