wire

package
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 Go to latest Published: Sep 28, 2023 License: MIT Imports: 11 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func ComposeVersionNegotiation 

func ComposeVersionNegotiation(destConnID, srcConnID protocol.ConnectionID, versions []protocol.VersionNumber) ([]byte, error)

ComposeVersionNegotiation composes a Version Negotiation

func IsVersionNegotiationPacket 

func IsVersionNegotiationPacket(b []byte) bool

IsVersionNegotiationPacket says if this is a version negotiation packet

func LogFrame 

func LogFrame(logger utils.Logger, frame Frame, sent bool)

LogFrame logs a frame, either sent or received

func ParseConnectionID 

func ParseConnectionID(data []byte, shortHeaderConnIDLen int) (protocol.ConnectionID, error)

ParseConnectionID parses the destination connection ID of a packet. It uses the data slice for the connection ID. That means that the connection ID must not be used after the packet buffer is released.

Types

type AckFrame 

type AckFrame struct {
	AckRanges []AckRange // has to be ordered. The highest ACK range goes first, the lowest ACK range goes last
	DelayTime time.Duration
}

An AckFrame is an ACK frame

func (*AckFrame) AcksPacket 

func (f *AckFrame) AcksPacket(p protocol.PacketNumber) bool

AcksPacket determines if this ACK frame acks a certain packet number

func (*AckFrame) HasMissingRanges 

func (f *AckFrame) HasMissingRanges() bool

HasMissingRanges returns if this frame reports any missing packets

func (*AckFrame) LargestAcked 

func (f *AckFrame) LargestAcked() protocol.PacketNumber

LargestAcked is the largest acked packet number

func (*AckFrame) Length 

func (f *AckFrame) Length(version protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*AckFrame) LowestAcked 

func (f *AckFrame) LowestAcked() protocol.PacketNumber

LowestAcked is the lowest acked packet number

func (*AckFrame) Write 

func (f *AckFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error

Write writes an ACK frame.

type AckRange 

type AckRange struct {
	Smallest protocol.PacketNumber
	Largest  protocol.PacketNumber
}

AckRange is an ACK range

func (AckRange) Len 

func (r AckRange) Len() protocol.PacketNumber

Len returns the number of packets contained in this ACK range

type ConnectionCloseFrame 

type ConnectionCloseFrame struct {
	IsApplicationError bool
	ErrorCode          qerr.ErrorCode
	ReasonPhrase       string
}

A ConnectionCloseFrame is a CONNECTION_CLOSE frame

func (*ConnectionCloseFrame) Length 

func (f *ConnectionCloseFrame) Length(version protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*ConnectionCloseFrame) Write 

func (f *ConnectionCloseFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error

type CryptoFrame 

type CryptoFrame struct {
	Offset protocol.ByteCount
	Data   []byte
}

A CryptoFrame is a CRYPTO frame

func (*CryptoFrame) Length 

func (f *CryptoFrame) Length(_ protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*CryptoFrame) MaxDataLen 

func (f *CryptoFrame) MaxDataLen(maxSize protocol.ByteCount) protocol.ByteCount

MaxDataLen returns the maximum data length

func (*CryptoFrame) Write 

func (f *CryptoFrame) Write(b *bytes.Buffer, _ protocol.VersionNumber) error

type DataBlockedFrame 

type DataBlockedFrame struct {
	DataLimit protocol.ByteCount
}

A DataBlockedFrame is a DATA_BLOCKED frame

func (*DataBlockedFrame) Length 

func (f *DataBlockedFrame) Length(version protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*DataBlockedFrame) Write 

func (f *DataBlockedFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error

type ExtendedHeader 

type ExtendedHeader struct {
	Header

	PacketNumberLen protocol.PacketNumberLen
	PacketNumber    protocol.PacketNumber

	KeyPhase int
	// contains filtered or unexported fields
}

ExtendedHeader is the header of a QUIC packet.

func (*ExtendedHeader) GetLength 

func (h *ExtendedHeader) GetLength(v protocol.VersionNumber) protocol.ByteCount

GetLength determines the length of the Header.

func (*ExtendedHeader) Log 

func (h *ExtendedHeader) Log(logger utils.Logger)

Log logs the Header

func (*ExtendedHeader) Write 

func (h *ExtendedHeader) Write(b *bytes.Buffer, ver protocol.VersionNumber) error

Write writes the Header.

type Frame 

type Frame interface {
	Write(b *bytes.Buffer, version protocol.VersionNumber) error
	Length(version protocol.VersionNumber) protocol.ByteCount
}

A Frame in QUIC

type FrameParser 

type FrameParser interface {
	ParseNext(*bytes.Reader, protocol.EncryptionLevel) (Frame, error)
	SetAckDelayExponent(uint8)
}

A FrameParser parses QUIC frames, one by one.

func NewFrameParser 

func NewFrameParser(v protocol.VersionNumber) FrameParser

NewFrameParser creates a new frame parser. 

type Header struct {
	Version          protocol.VersionNumber
	SrcConnectionID  protocol.ConnectionID
	DestConnectionID protocol.ConnectionID

	IsLongHeader bool
	Type         protocol.PacketType
	Length       protocol.ByteCount

	Token                []byte
	SupportedVersions    []protocol.VersionNumber // sent in a Version Negotiation Packet
	OrigDestConnectionID protocol.ConnectionID    // sent in the Retry packet
	// contains filtered or unexported fields
}

The Header is the version independent part of the header

func ParsePacket 

func ParsePacket(data []byte, shortHeaderConnIDLen int) (*Header, []byte, []byte, error)

ParsePacket parses a packet. If the packet has a long header, the packet is cut according to the length field. If we understand the version, the packet is header up unto the packet number. Otherwise, only the invariant part of the header is parsed.

func (*Header) ParseExtended 

func (h *Header) ParseExtended(b *bytes.Reader, ver protocol.VersionNumber) (*ExtendedHeader, error)

ParseExtended parses the version dependent part of the header. The Reader has to be set such that it points to the first byte of the header.

func (*Header) ParsedLen 

func (h *Header) ParsedLen() protocol.ByteCount

ParsedLen returns the number of bytes that were consumed when parsing the header

type MaxDataFrame 

type MaxDataFrame struct {
	ByteOffset protocol.ByteCount
}

A MaxDataFrame carries flow control information for the connection

func (*MaxDataFrame) Length 

func (f *MaxDataFrame) Length(version protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*MaxDataFrame) Write 

func (f *MaxDataFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error

Write writes a MAX_STREAM_DATA frame

type MaxStreamDataFrame 

type MaxStreamDataFrame struct {
	StreamID   protocol.StreamID
	ByteOffset protocol.ByteCount
}

A MaxStreamDataFrame is a MAX_STREAM_DATA frame

func (*MaxStreamDataFrame) Length 

func (f *MaxStreamDataFrame) Length(version protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*MaxStreamDataFrame) Write 

func (f *MaxStreamDataFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error

type MaxStreamsFrame 

type MaxStreamsFrame struct {
	Type         protocol.StreamType
	MaxStreamNum protocol.StreamNum
}

A MaxStreamsFrame is a MAX_STREAMS frame

func (*MaxStreamsFrame) Length 

func (f *MaxStreamsFrame) Length(protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*MaxStreamsFrame) Write 

func (f *MaxStreamsFrame) Write(b *bytes.Buffer, _ protocol.VersionNumber) error

type NewConnectionIDFrame 

type NewConnectionIDFrame struct {
	SequenceNumber      uint64
	ConnectionID        protocol.ConnectionID
	StatelessResetToken [16]byte
}

A NewConnectionIDFrame is a NEW_CONNECTION_ID frame

func (*NewConnectionIDFrame) Length 

func (f *NewConnectionIDFrame) Length(protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*NewConnectionIDFrame) Write 

func (f *NewConnectionIDFrame) Write(b *bytes.Buffer, _ protocol.VersionNumber) error

type NewTokenFrame 

type NewTokenFrame struct {
	Token []byte
}

A NewTokenFrame is a NEW_TOKEN frame

func (*NewTokenFrame) Length 

func (f *NewTokenFrame) Length(protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*NewTokenFrame) Write 

func (f *NewTokenFrame) Write(b *bytes.Buffer, _ protocol.VersionNumber) error

type PathChallengeFrame 

type PathChallengeFrame struct {
	Data [8]byte
}

A PathChallengeFrame is a PATH_CHALLENGE frame

func (*PathChallengeFrame) Length 

func (f *PathChallengeFrame) Length(_ protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*PathChallengeFrame) Write 

func (f *PathChallengeFrame) Write(b *bytes.Buffer, _ protocol.VersionNumber) error

type PathResponseFrame 

type PathResponseFrame struct {
	Data [8]byte
}

A PathResponseFrame is a PATH_RESPONSE frame

func (*PathResponseFrame) Length 

func (f *PathResponseFrame) Length(_ protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*PathResponseFrame) Write 

func (f *PathResponseFrame) Write(b *bytes.Buffer, _ protocol.VersionNumber) error

type PingFrame 

type PingFrame struct{}

A PingFrame is a PING frame

func (*PingFrame) Length 

func (f *PingFrame) Length(version protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*PingFrame) Write 

func (f *PingFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error

type ResetStreamFrame 

type ResetStreamFrame struct {
	StreamID   protocol.StreamID
	ErrorCode  protocol.ApplicationErrorCode
	ByteOffset protocol.ByteCount
}

A ResetStreamFrame is a RESET_STREAM frame in QUIC

func (*ResetStreamFrame) Length 

func (f *ResetStreamFrame) Length(version protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*ResetStreamFrame) Write 

func (f *ResetStreamFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error

type RetireConnectionIDFrame 

type RetireConnectionIDFrame struct {
	SequenceNumber uint64
}

A RetireConnectionIDFrame is a RETIRE_CONNECTION_ID frame

func (*RetireConnectionIDFrame) Length 

func (f *RetireConnectionIDFrame) Length(protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*RetireConnectionIDFrame) Write 

func (f *RetireConnectionIDFrame) Write(b *bytes.Buffer, _ protocol.VersionNumber) error

type StopSendingFrame 

type StopSendingFrame struct {
	StreamID  protocol.StreamID
	ErrorCode protocol.ApplicationErrorCode
}

A StopSendingFrame is a STOP_SENDING frame

func (*StopSendingFrame) Length 

func (f *StopSendingFrame) Length(_ protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*StopSendingFrame) Write 

func (f *StopSendingFrame) Write(b *bytes.Buffer, _ protocol.VersionNumber) error

type StreamDataBlockedFrame 

type StreamDataBlockedFrame struct {
	StreamID  protocol.StreamID
	DataLimit protocol.ByteCount
}

A StreamDataBlockedFrame is a STREAM_DATA_BLOCKED frame

func (*StreamDataBlockedFrame) Length 

func (f *StreamDataBlockedFrame) Length(version protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*StreamDataBlockedFrame) Write 

func (f *StreamDataBlockedFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error

type StreamFrame 

type StreamFrame struct {
	StreamID       protocol.StreamID
	FinBit         bool
	DataLenPresent bool
	Offset         protocol.ByteCount
	Data           []byte
}

A StreamFrame of QUIC

func (*StreamFrame) DataLen 

func (f *StreamFrame) DataLen() protocol.ByteCount

DataLen gives the length of data in bytes

func (*StreamFrame) Length 

func (f *StreamFrame) Length(version protocol.VersionNumber) protocol.ByteCount

Length returns the total length of the STREAM frame

func (*StreamFrame) MaxDataLen 

func (f *StreamFrame) MaxDataLen(maxSize protocol.ByteCount, version protocol.VersionNumber) protocol.ByteCount

MaxDataLen returns the maximum data length If 0 is returned, writing will fail (a STREAM frame must contain at least 1 byte of data).

func (*StreamFrame) MaybeSplitOffFrame 

func (f *StreamFrame) MaybeSplitOffFrame(maxSize protocol.ByteCount, version protocol.VersionNumber) (*StreamFrame, error)

MaybeSplitOffFrame splits a frame such that it is not bigger than n bytes. If n >= len(frame), nil is returned and nothing is modified.

func (*StreamFrame) Write 

func (f *StreamFrame) Write(b *bytes.Buffer, version protocol.VersionNumber) error

Write writes a STREAM frame

type StreamsBlockedFrame 

type StreamsBlockedFrame struct {
	Type        protocol.StreamType
	StreamLimit protocol.StreamNum
}

A StreamsBlockedFrame is a STREAMS_BLOCKED frame

func (*StreamsBlockedFrame) Length 

func (f *StreamsBlockedFrame) Length(_ protocol.VersionNumber) protocol.ByteCount

Length of a written frame

func (*StreamsBlockedFrame) Write 

func (f *StreamsBlockedFrame) Write(b *bytes.Buffer, _ protocol.VersionNumber) error

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