Network.HPACK.Context

Types

type HeaderSet = [Header]

Header set.

data Context

Context for encoding/decoding.

newContext :: Size -> IO Context

Creating a new Context. The first argument is the size of HeaderTable.

data DecodeError

Errors for decoder.

Constructors

IndexOverrun Index

Index is out of range

EosInTheMiddle

Eos appears in the middle of string

IllegalEos

Non-eos appears in the end of string

TooLongEos

Eos is more than 7 bits

EmptyEncodedString

Encoded string has no length

EmptyBlock

Header block is empty

Instances

Eq DecodeError

Show DecodeError

Typeable DecodeError

Exception DecodeError

printContext :: Context -> IO ()

Printing Context

Initialization and final results

clearHeaderSet :: Context -> Context

Clearing HeaderSet in Context for the next decode.

getHeaderSet :: Context -> HeaderSet

Getting HeaderSet as emitted headers.

emitNotEmitted :: Context -> IO Context

Emitting non-emitted headers.

Processing

clearRefSets :: Context -> IO Context

The reference set is emptied.

removeRef :: Context -> Index -> IO Context

The entry is removed from the reference set.

newEntry :: Context -> Entry -> IO Context

The header field is emitted. The header field is inserted at the beginning of the header table. A reference to the new entry is added to the reference set.

pushRef :: Context -> Index -> Entry -> IO Context

The header field corresponding to the referenced entry is emitted. The referenced header table entry is added to the reference set.

emitOnly :: Context -> Header -> IO Context

The header field is emitted.

Auxiliary functions

isPresentIn :: Index -> Context -> Bool

Is Index present in the reference set?

getEntry :: Index -> Context -> IO Entry

Getting Entry by Index.

Table

whichTable :: Index -> Context -> IO (WhichTable, Entry)

Which table does Index refer to?

lookupHeader :: Header -> Context -> IO HeaderCache

Which table contains Header?