Network.HTTP2.Frame

http2-5.3.9: HTTP/2 library

Safe Haskell | None
Language | Haskell2010

Network.HTTP2.Frame

Contents

- Frame
- Encoding
- Frame type
- Priority
- Stream identifier
- Stream identifier related
- Flags
- SettingsList
- Payload length
- Window
- Error code
- Predefined values
- Deprecated

Description

Framing in HTTP/2(https://www.rfc-editor.org/rfc/rfc9113).

Synopsis

- data Frame = Frame {
  - frameHeader :: FrameHeader
  - framePayload :: FramePayload
  }
- data FrameHeader = FrameHeader {
  - payloadLength :: Int
  - flags :: FrameFlags
  - streamId :: StreamId
  }
- data FramePayload
  - = DataFrame ByteString
  - | HeadersFrame (Maybe Priority) HeaderBlockFragment
  - | PriorityFrame Priority
  - | RSTStreamFrame ErrorCode
  - | SettingsFrame SettingsList
  - | PushPromiseFrame StreamId HeaderBlockFragment
  - | PingFrame ByteString
  - | GoAwayFrame StreamId ErrorCode ByteString
  - | WindowUpdateFrame WindowSize
  - | ContinuationFrame HeaderBlockFragment
  - | UnknownFrame FrameType ByteString
- type HeaderBlockFragment = ByteString
- type Padding = ByteString
- isPaddingDefined :: FramePayload -> Bool
- encodeFrame :: EncodeInfo -> FramePayload -> ByteString
- encodeFrameChunks :: EncodeInfo -> FramePayload -> [ByteString]
- encodeFrameHeader :: FrameType -> FrameHeader -> ByteString
- encodeFrameHeaderBuf :: FrameType -> FrameHeader -> Ptr Word8 -> IO ()
- encodeFramePayload :: EncodeInfo -> FramePayload -> (FrameHeader, [ByteString])
- data EncodeInfo = EncodeInfo {
  - encodeFlags :: FrameFlags
  - encodeStreamId :: StreamId
  - encodePadding :: Maybe Padding
  }
- encodeInfo :: (FrameFlags -> FrameFlags) -> Int -> EncodeInfo
- decodeFrame :: ByteString -> Either FrameDecodeError Frame
- decodeFrameHeader :: ByteString -> (FrameType, FrameHeader)
- checkFrameHeader :: (FrameType, FrameHeader) -> Either FrameDecodeError (FrameType, FrameHeader)
- data FrameDecodeError = FrameDecodeError ErrorCode StreamId ShortByteString
- decodeFramePayload :: FrameType -> FramePayloadDecoder
- type FramePayloadDecoder = FrameHeader -> ByteString -> Either FrameDecodeError FramePayload
- decodeDataFrame :: FramePayloadDecoder
- decodeHeadersFrame :: FramePayloadDecoder
- decodePriorityFrame :: FramePayloadDecoder
- decodeRSTStreamFrame :: FramePayloadDecoder
- decodeSettingsFrame :: FramePayloadDecoder
- decodePushPromiseFrame :: FramePayloadDecoder
- decodePingFrame :: FramePayloadDecoder
- decodeGoAwayFrame :: FramePayloadDecoder
- decodeWindowUpdateFrame :: FramePayloadDecoder
- decodeContinuationFrame :: FramePayloadDecoder
- newtype FrameType where
  - FrameType Word8
  - pattern FrameData :: FrameType
  - pattern FrameHeaders :: FrameType
  - pattern FramePriority :: FrameType
  - pattern FrameRSTStream :: FrameType
  - pattern FrameSettings :: FrameType
  - pattern FramePushPromise :: FrameType
  - pattern FramePing :: FrameType
  - pattern FrameGoAway :: FrameType
  - pattern FrameWindowUpdate :: FrameType
  - pattern FrameContinuation :: FrameType
- fromFrameType :: FrameType -> Word8
- toFrameType :: Word8 -> FrameType
- minFrameType :: FrameType
- maxFrameType :: FrameType
- framePayloadToFrameType :: FramePayload -> FrameType
- data Priority = Priority {
  - exclusive :: Bool
  - streamDependency :: StreamId
  - weight :: Weight
  }
- type Weight = Int
- type StreamId = Int
- isControl :: StreamId -> Bool
- isClientInitiated :: StreamId -> Bool
- isServerInitiated :: StreamId -> Bool
- testExclusive :: StreamId -> Bool
- setExclusive :: StreamId -> StreamId
- clearExclusive :: StreamId -> StreamId
- type FrameFlags = Word8
- defaultFlags :: FrameFlags
- testEndStream :: FrameFlags -> Bool
- testAck :: FrameFlags -> Bool
- testEndHeader :: FrameFlags -> Bool
- testPadded :: FrameFlags -> Bool
- testPriority :: FrameFlags -> Bool
- setEndStream :: FrameFlags -> FrameFlags
- setAck :: FrameFlags -> FrameFlags
- setEndHeader :: FrameFlags -> FrameFlags
- setPadded :: FrameFlags -> FrameFlags
- setPriority :: FrameFlags -> FrameFlags
- type SettingsList = [(SettingsKey, SettingsValue)]
- newtype SettingsKey where
  - SettingsKey Word16
  - pattern SettingsTokenHeaderTableSize :: SettingsKey
  - pattern SettingsEnablePush :: SettingsKey
  - pattern SettingsMaxConcurrentStreams :: SettingsKey
  - pattern SettingsInitialWindowSize :: SettingsKey
  - pattern SettingsMaxFrameSize :: SettingsKey
  - pattern SettingsMaxHeaderListSize :: SettingsKey
- type SettingsValue = Int
- fromSettingsKey :: SettingsKey -> Word16
- toSettingsKey :: Word16 -> SettingsKey
- defaultPayloadLength :: Int
- maxPayloadLength :: Int
- type WindowSize = Int
- defaultWindowSize :: WindowSize
- maxWindowSize :: WindowSize
- isWindowOverflow :: WindowSize -> Bool
- newtype ErrorCode where
  - ErrorCode Word32
  - pattern NoError :: ErrorCode
  - pattern ProtocolError :: ErrorCode
  - pattern InternalError :: ErrorCode
  - pattern FlowControlError :: ErrorCode
  - pattern SettingsTimeout :: ErrorCode
  - pattern StreamClosed :: ErrorCode
  - pattern FrameSizeError :: ErrorCode
  - pattern RefusedStream :: ErrorCode
  - pattern Cancel :: ErrorCode
  - pattern CompressionError :: ErrorCode
  - pattern ConnectError :: ErrorCode
  - pattern EnhanceYourCalm :: ErrorCode
  - pattern InadequateSecurity :: ErrorCode
  - pattern HTTP11Required :: ErrorCode
- fromErrorCode :: ErrorCode -> Word32
- toErrorCode :: Word32 -> ErrorCode
- connectionPreface :: ByteString
- connectionPrefaceLength :: Int
- frameHeaderLength :: Int
- recommendedConcurrency :: Int
- type ErrorCodeId = ErrorCode
- type SettingsKeyId = SettingsKey
- type FrameTypeId = FrameType

# Frame

data Frame #

The data type for HTTP/2 frames.

Constructors

Frame |
Fields frameHeader :: FrameHeader framePayload :: FramePayload

#### Instances

Instances details

Read Frame # |
Instance details Defined in Network.HTTP2.Frame.Types Methods readsPrec :: Int -> ReadS Frame # readList :: ReadS [Frame] # readPrec :: ReadPrec Frame # readListPrec :: ReadPrec [Frame] #
Show Frame # |
Instance details Defined in Network.HTTP2.Frame.Types Methods showsPrec :: Int -> Frame -> ShowS # show :: Frame -> String # showList :: [Frame] -> ShowS #
Eq Frame # |
Instance details Defined in Network.HTTP2.Frame.Types Methods (==) :: Frame -> Frame -> Bool # (/=) :: Frame -> Frame -> Bool #

data FrameHeader #

The data type for HTTP/2 frame headers.

Constructors

FrameHeader |
Fields payloadLength :: Int flags :: FrameFlags streamId :: StreamId

#### Instances

Instances details

Read FrameHeader # |
Instance details Defined in Network.HTTP2.Frame.Types Methods readsPrec :: Int -> ReadS FrameHeader # readList :: ReadS [FrameHeader] # readPrec :: ReadPrec FrameHeader # readListPrec :: ReadPrec [FrameHeader] #
Show FrameHeader # |
Instance details Defined in Network.HTTP2.Frame.Types Methods showsPrec :: Int -> FrameHeader -> ShowS # show :: FrameHeader -> String # showList :: [FrameHeader] -> ShowS #
Eq FrameHeader # |
Instance details Defined in Network.HTTP2.Frame.Types Methods (==) :: FrameHeader -> FrameHeader -> Bool # (/=) :: FrameHeader -> FrameHeader -> Bool #

data FramePayload #

The data type for HTTP/2 frame payloads.

Constructors

DataFrame ByteString |
HeadersFrame (Maybe Priority) HeaderBlockFragment |
PriorityFrame Priority |
RSTStreamFrame ErrorCode |
SettingsFrame SettingsList |
PushPromiseFrame StreamId HeaderBlockFragment |
PingFrame ByteString |
GoAwayFrame StreamId ErrorCode ByteString |
WindowUpdateFrame WindowSize |
ContinuationFrame HeaderBlockFragment |
UnknownFrame FrameType ByteString |

#### Instances

Instances details

Read FramePayload # |
Instance details Defined in Network.HTTP2.Frame.Types Methods readsPrec :: Int -> ReadS FramePayload # readList :: ReadS [FramePayload] # readPrec :: ReadPrec FramePayload # readListPrec :: ReadPrec [FramePayload] #
Show FramePayload # |
Instance details Defined in Network.HTTP2.Frame.Types Methods showsPrec :: Int -> FramePayload -> ShowS # show :: FramePayload -> String # showList :: [FramePayload] -> ShowS #
Eq FramePayload # |
Instance details Defined in Network.HTTP2.Frame.Types Methods (==) :: FramePayload -> FramePayload -> Bool # (/=) :: FramePayload -> FramePayload -> Bool #

type HeaderBlockFragment = ByteString #

The type for fragments of a header encoded with HPACK.

type Padding = ByteString #

The type for padding in payloads.

isPaddingDefined :: FramePayload -> Bool #

Checking if padding is defined in this frame type.

    >>> isPaddingDefined $ DataFrame ""
    True
    >>> isPaddingDefined $ PingFrame ""
    False

# Encoding

encodeFrame :: EncodeInfo -> FramePayload -> ByteString #

Encoding an HTTP/2 frame to `ByteString`. This function is not efficient enough for high performace program because of the concatenation of `ByteString`.

    >>> encodeFrame (encodeInfo id 1) (DataFrame "body")
    "\NUL\NUL\EOT\NUL\NUL\NUL\NUL\NUL\SOHbody"

encodeFrameChunks :: EncodeInfo -> FramePayload -> [ByteString] #

Encoding an HTTP/2 frame to [`ByteString`]. This is suitable for sendMany.

encodeFrameHeader :: FrameType -> FrameHeader -> ByteString #

Encoding an HTTP/2 frame header. The frame header must be completed.

encodeFrameHeaderBuf :: FrameType -> FrameHeader -> Ptr Word8 -> IO () #

Writing an encoded HTTP/2 frame header to the buffer. The length of the buffer must be larger than or equal to 9 bytes.

encodeFramePayload :: EncodeInfo -> FramePayload -> (FrameHeader, [ByteString]) #

Encoding an HTTP/2 frame payload. This returns a complete frame header and chunks of payload.

data EncodeInfo #

Auxiliary information for frame encoding.

Constructors

EncodeInfo |
Fields encodeFlags :: FrameFlags Flags to be set in a frame header encodeStreamId :: StreamId Stream id to be set in a frame header encodePadding :: Maybe Padding Padding if any. In the case where this value is set but the priority flag is not set, this value gets preference over the priority flag. So, if this value is set, the priority flag is also set.

#### Instances

Instances details

Read EncodeInfo # |
Instance details Defined in Network.HTTP2.Frame.Encode Methods readsPrec :: Int -> ReadS EncodeInfo # readList :: ReadS [EncodeInfo] # readPrec :: ReadPrec EncodeInfo # readListPrec :: ReadPrec [EncodeInfo] #
Show EncodeInfo # |
Instance details Defined in Network.HTTP2.Frame.Encode Methods showsPrec :: Int -> EncodeInfo -> ShowS # show :: EncodeInfo -> String # showList :: [EncodeInfo] -> ShowS #

encodeInfo #

Arguments

:: (FrameFlags -> FrameFlags) |
-> Int | stream identifier
-> EncodeInfo |

A smart builder of `EncodeInfo`.

    >>> encodeInfo setAck 0
    EncodeInfo {encodeFlags = 1, encodeStreamId = 0, encodePadding = Nothing}

decodeFrame #

Arguments

:: ByteString | Input byte-stream
-> Either FrameDecodeError Frame | Decoded frame

Decoding an HTTP/2 frame to `ByteString`. The second argument must be include the entire of frame. So, this function is not useful for real applications but useful for testing.

decodeFrameHeader :: ByteString -> (FrameType, FrameHeader) #

Decoding an HTTP/2 frame header. Must supply 9 bytes.

checkFrameHeader :: (FrameType, FrameHeader) -> Either FrameDecodeError (FrameType, FrameHeader) #

Checking a frame header and reporting an error if any.

    >>> checkFrameHeader (FrameData,(FrameHeader 100 0 0))
    Left (FrameDecodeError ProtocolError 0 "cannot used in control stream")

data FrameDecodeError #

Constructors

FrameDecodeError ErrorCode StreamId ShortByteString |

#### Instances

Instances details

Exception FrameDecodeError # |
Instance details Defined in Network.HTTP2.Frame.Decode Methods toException :: FrameDecodeError -> SomeException # fromException :: SomeException -> Maybe FrameDecodeError # displayException :: FrameDecodeError -> String # backtraceDesired :: FrameDecodeError -> Bool #
Show FrameDecodeError # |
Instance details Defined in Network.HTTP2.Frame.Decode Methods showsPrec :: Int -> FrameDecodeError -> ShowS # show :: FrameDecodeError -> String # showList :: [FrameDecodeError] -> ShowS #
Eq FrameDecodeError # |
Instance details Defined in Network.HTTP2.Frame.Decode Methods (==) :: FrameDecodeError -> FrameDecodeError -> Bool # (/=) :: FrameDecodeError -> FrameDecodeError -> Bool #

decodeFramePayload :: FrameType -> FramePayloadDecoder #

Decoding an HTTP/2 frame payload. This function is considered to return a frame payload decoder according to a frame type.

type FramePayloadDecoder = FrameHeader -> ByteString -> Either FrameDecodeError FramePayload #

The type for frame payload decoder.

decodeDataFrame :: FramePayloadDecoder #

Frame payload decoder for DATA frame.

decodeHeadersFrame :: FramePayloadDecoder #

Frame payload decoder for HEADERS frame.

decodePriorityFrame :: FramePayloadDecoder #

Frame payload decoder for PRIORITY frame.

decodeRSTStreamFrame :: FramePayloadDecoder #

Frame payload decoder for RST_STREAM frame.

decodeSettingsFrame :: FramePayloadDecoder #

Frame payload decoder for SETTINGS frame.

decodePushPromiseFrame :: FramePayloadDecoder #

Frame payload decoder for PUSH_PROMISE frame.

decodePingFrame :: FramePayloadDecoder #

Frame payload decoder for PING frame.

decodeGoAwayFrame :: FramePayloadDecoder #

Frame payload decoder for GOAWAY frame.

decodeWindowUpdateFrame :: FramePayloadDecoder #

Frame payload decoder for WINDOW_UPDATE frame.

decodeContinuationFrame :: FramePayloadDecoder #

Frame payload decoder for CONTINUATION frame.

# Frame type

newtype FrameType #

The type for raw frame type.

Constructors

FrameType Word8 |

Bundled Patterns

pattern FrameData :: FrameType |
pattern FrameHeaders :: FrameType |
pattern FramePriority :: FrameType |
pattern FrameRSTStream :: FrameType |
pattern FrameSettings :: FrameType |
pattern FramePushPromise :: FrameType |
pattern FramePing :: FrameType |
pattern FrameGoAway :: FrameType |
pattern FrameWindowUpdate :: FrameType |
pattern FrameContinuation :: FrameType |

#### Instances

Instances details

Ix FrameType # |
Instance details Defined in Network.HTTP2.Frame.Types Methods range :: (FrameType, FrameType) -> [FrameType] # index :: (FrameType, FrameType) -> FrameType -> Int # unsafeIndex :: (FrameType, FrameType) -> FrameType -> Int # inRange :: (FrameType, FrameType) -> FrameType -> Bool # rangeSize :: (FrameType, FrameType) -> Int # unsafeRangeSize :: (FrameType, FrameType) -> Int #
Read FrameType # |
Instance details Defined in Network.HTTP2.Frame.Types Methods readsPrec :: Int -> ReadS FrameType # readList :: ReadS [FrameType] # readPrec :: ReadPrec FrameType # readListPrec :: ReadPrec [FrameType] #
Show FrameType # |
Instance details Defined in Network.HTTP2.Frame.Types Methods showsPrec :: Int -> FrameType -> ShowS # show :: FrameType -> String # showList :: [FrameType] -> ShowS #
Eq FrameType # |
Instance details Defined in Network.HTTP2.Frame.Types Methods (==) :: FrameType -> FrameType -> Bool # (/=) :: FrameType -> FrameType -> Bool #
Ord FrameType # |
Instance details Defined in Network.HTTP2.Frame.Types Methods compare :: FrameType -> FrameType -> Ordering # (<) :: FrameType -> FrameType -> Bool # (<=) :: FrameType -> FrameType -> Bool # (>) :: FrameType -> FrameType -> Bool # (>=) :: FrameType -> FrameType -> Bool # max :: FrameType -> FrameType -> FrameType # min :: FrameType -> FrameType -> FrameType #

fromFrameType :: FrameType -> Word8 #

Converting `FrameType` to `Word8`.

    >>> fromFrameType FrameData
    0
    >>> fromFrameType FrameContinuation
    9

toFrameType :: Word8 -> FrameType #

minFrameType :: FrameType #

maxFrameType :: FrameType #

framePayloadToFrameType :: FramePayload -> FrameType #

Getting `FrameType` from `FramePayload`.

    >>> framePayloadToFrameType (DataFrame "body")
    FrameData

# Priority

data Priority #

Type for stream priority. Deprecated in RFC 9113 but provided for `FrameHeaders`.

Constructors

Priority |
Fields exclusive :: Bool streamDependency :: StreamId weight :: Weight

#### Instances

Instances details

Read Priority # |
Instance details Defined in Network.HTTP2.Frame.Types Methods readsPrec :: Int -> ReadS Priority # readList :: ReadS [Priority] # readPrec :: ReadPrec Priority # readListPrec :: ReadPrec [Priority] #
Show Priority # |
Instance details Defined in Network.HTTP2.Frame.Types Methods showsPrec :: Int -> Priority -> ShowS # show :: Priority -> String # showList :: [Priority] -> ShowS #
Eq Priority # |
Instance details Defined in Network.HTTP2.Frame.Types Methods (==) :: Priority -> Priority -> Bool # (/=) :: Priority -> Priority -> Bool #

type Weight = Int #

The type for weight in priority. Its values are from 1 to 256. Deprecated in RFC 9113.

# Stream identifier

type StreamId = Int #

The type for stream identifier

isControl :: StreamId -> Bool #

Checking if the stream identifier for control.

    >>> isControl 0
    True
    >>> isControl 1
    False

isClientInitiated :: StreamId -> Bool #

Checking if the stream identifier is from a client.

    >>> isClientInitiated 0
    False
    >>> isClientInitiated 1
    True

isServerInitiated :: StreamId -> Bool #

Checking if the stream identifier is from a server.

    >>> isServerInitiated 0
    False
    >>> isServerInitiated 2
    True

# Stream identifier related

testExclusive :: StreamId -> Bool #

Checking if the exclusive flag is set.

setExclusive :: StreamId -> StreamId #

Setting the exclusive flag.

clearExclusive :: StreamId -> StreamId #

Clearing the exclusive flag.

# Flags

type FrameFlags = Word8 #

The type for flags.

defaultFlags :: FrameFlags #

The initial value of flags. No flags are set.

    >>> defaultFlags
    0

testEndStream :: FrameFlags -> Bool #

Checking if the END_STREAM flag is set. >>> testEndStream 0x1 True

testAck :: FrameFlags -> Bool #

Checking if the ACK flag is set. >>> testAck 0x1 True

testEndHeader :: FrameFlags -> Bool #

Checking if the END_HEADERS flag is set.

    >>> testEndHeader 0x4
    True

testPadded :: FrameFlags -> Bool #

Checking if the PADDED flag is set.

    >>> testPadded 0x8
    True

testPriority :: FrameFlags -> Bool #

Checking if the PRIORITY flag is set.

    >>> testPriority 0x20
    True

setEndStream :: FrameFlags -> FrameFlags #

Setting the END_STREAM flag.

    >>> setEndStream 0
    1

setAck :: FrameFlags -> FrameFlags #

Setting the ACK flag.

    >>> setAck 0
    1

setEndHeader :: FrameFlags -> FrameFlags #

Setting the END_HEADERS flag.

    >>> setEndHeader 0
    4

setPadded :: FrameFlags -> FrameFlags #

Setting the PADDED flag.

    >>> setPadded 0
    8

setPriority :: FrameFlags -> FrameFlags #

Setting the PRIORITY flag.

    >>> setPriority 0
    32

# SettingsList

type SettingsList = [(SettingsKey, SettingsValue)] #

Association list of SETTINGS.

newtype SettingsKey #

The type for SETTINGS key.

Constructors

SettingsKey Word16 |

Bundled Patterns

pattern SettingsTokenHeaderTableSize :: SettingsKey |
pattern SettingsEnablePush :: SettingsKey |
pattern SettingsMaxConcurrentStreams :: SettingsKey |
pattern SettingsInitialWindowSize :: SettingsKey |
pattern SettingsMaxFrameSize :: SettingsKey |
pattern SettingsMaxHeaderListSize :: SettingsKey |

#### Instances

Instances details

Read SettingsKey # |
Instance details Defined in Network.HTTP2.Frame.Types Methods readsPrec :: Int -> ReadS SettingsKey # readList :: ReadS [SettingsKey] # readPrec :: ReadPrec SettingsKey # readListPrec :: ReadPrec [SettingsKey] #
Show SettingsKey # |
Instance details Defined in Network.HTTP2.Frame.Types Methods showsPrec :: Int -> SettingsKey -> ShowS # show :: SettingsKey -> String # showList :: [SettingsKey] -> ShowS #
Eq SettingsKey # |
Instance details Defined in Network.HTTP2.Frame.Types Methods (==) :: SettingsKey -> SettingsKey -> Bool # (/=) :: SettingsKey -> SettingsKey -> Bool #
Ord SettingsKey # |
Instance details Defined in Network.HTTP2.Frame.Types Methods compare :: SettingsKey -> SettingsKey -> Ordering # (<) :: SettingsKey -> SettingsKey -> Bool # (<=) :: SettingsKey -> SettingsKey -> Bool # (>) :: SettingsKey -> SettingsKey -> Bool # (>=) :: SettingsKey -> SettingsKey -> Bool # max :: SettingsKey -> SettingsKey -> SettingsKey # min :: SettingsKey -> SettingsKey -> SettingsKey #

type SettingsValue = Int #

The type for raw SETTINGS value.

fromSettingsKey :: SettingsKey -> Word16 #

toSettingsKey :: Word16 -> SettingsKey #

# Payload length

defaultPayloadLength :: Int #

The default payload length of HTTP/2 payload.

    >>> defaultPayloadLength
    16384

maxPayloadLength :: Int #

The maximum payload length of HTTP/2 payload.

    >>> maxPayloadLength
    16777215

# Window

type WindowSize = Int #

Window size.

defaultWindowSize :: WindowSize #

The default initial window size.

    >>> defaultWindowSize
    65535

maxWindowSize :: WindowSize #

The maximum window size.

    >>> maxWindowSize
    2147483647

isWindowOverflow :: WindowSize -> Bool #

Checking if a window size exceeds the maximum window size.

    >>> isWindowOverflow 10
    False
    >>> isWindowOverflow maxWindowSize
    False
    >>> isWindowOverflow (maxWindowSize + 1)
    True

# Error code

newtype ErrorCode #

The type for raw error code.

Constructors

ErrorCode Word32 |

Bundled Patterns

pattern NoError :: ErrorCode | The type for error code. See https://www.rfc-editor.org/rfc/rfc9113#ErrorCodes.
pattern ProtocolError :: ErrorCode |
pattern InternalError :: ErrorCode |
pattern FlowControlError :: ErrorCode |
pattern SettingsTimeout :: ErrorCode |
pattern StreamClosed :: ErrorCode |
pattern FrameSizeError :: ErrorCode |
pattern RefusedStream :: ErrorCode |
pattern Cancel :: ErrorCode |
pattern CompressionError :: ErrorCode |
pattern ConnectError :: ErrorCode |
pattern EnhanceYourCalm :: ErrorCode |
pattern InadequateSecurity :: ErrorCode |
pattern HTTP11Required :: ErrorCode |

#### Instances

Instances details

Read ErrorCode # |
Instance details Defined in Network.HTTP2.Frame.Types Methods readsPrec :: Int -> ReadS ErrorCode # readList :: ReadS [ErrorCode] # readPrec :: ReadPrec ErrorCode # readListPrec :: ReadPrec [ErrorCode] #
Show ErrorCode # |
Instance details Defined in Network.HTTP2.Frame.Types Methods showsPrec :: Int -> ErrorCode -> ShowS # show :: ErrorCode -> String # showList :: [ErrorCode] -> ShowS #
Eq ErrorCode # |
Instance details Defined in Network.HTTP2.Frame.Types Methods (==) :: ErrorCode -> ErrorCode -> Bool # (/=) :: ErrorCode -> ErrorCode -> Bool #
Ord ErrorCode # |
Instance details Defined in Network.HTTP2.Frame.Types Methods compare :: ErrorCode -> ErrorCode -> Ordering # (<) :: ErrorCode -> ErrorCode -> Bool # (<=) :: ErrorCode -> ErrorCode -> Bool # (>) :: ErrorCode -> ErrorCode -> Bool # (>=) :: ErrorCode -> ErrorCode -> Bool # max :: ErrorCode -> ErrorCode -> ErrorCode # min :: ErrorCode -> ErrorCode -> ErrorCode #

fromErrorCode :: ErrorCode -> Word32 #

toErrorCode :: Word32 -> ErrorCode #

# Predefined values

connectionPreface :: ByteString #

The preface of HTTP/2.

    >>> connectionPreface
    "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"

connectionPrefaceLength :: Int #

Length of the preface.

    >>> connectionPrefaceLength
    24

frameHeaderLength :: Int #

The length of HTTP/2 frame header.

    >>> frameHeaderLength
    9

recommendedConcurrency :: Int #

Default concurrency.

    >>> recommendedConcurrency
    100

# Deprecated

type ErrorCodeId = ErrorCode #

type SettingsKeyId = SettingsKey #

type FrameTypeId = FrameType #