framing

package
v0.2.1 Latest Latest
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 Go to latest Published: Jun 12, 2019 License: Apache-2.0 Imports: 8 Imported by: 0

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Index

Constants

View Source 
const (
	FlagNext FrameFlag = 1 << (5 + iota)
	FlagComplete
	FlagFollow
	FlagMetadata
	FlagIgnore

	FlagResume  = FlagFollow
	FlagLease   = FlagComplete
	FlagRespond = FlagFollow
)

All frame flags

View Source 
const (
	// HeaderLen is len of header.
	HeaderLen = 6
)

Variables

This section is empty.

Functions

func CalcPayloadFrameSize 

func CalcPayloadFrameSize(data, metadata []byte) int

CalcPayloadFrameSize returns payload frame size.

Types

type BaseFrame 

type BaseFrame struct {
	// contains filtered or unexported fields
}

BaseFrame is basic frame implementation.

func NewBaseFrame 

func NewBaseFrame(h FrameHeader, body *common.ByteBuff) *BaseFrame

NewBaseFrame returns a new BaseFrame.

func (*BaseFrame) Body 

func (p *BaseFrame) Body() *common.ByteBuff

Body returns frame body.

func (*BaseFrame) Bytes 

func (p *BaseFrame) Bytes() []byte

Bytes returns frame in bytes.

func (*BaseFrame) Header 

func (p *BaseFrame) Header() FrameHeader

Header returns frame header.

func (*BaseFrame) IsResumable 

func (p *BaseFrame) IsResumable() bool

IsResumable returns true if frame supports resume.

func (*BaseFrame) Len 

func (p *BaseFrame) Len() int

Len returns length of frame.

func (*BaseFrame) Release 

func (p *BaseFrame) Release()

Release release resources of frame.

func (*BaseFrame) SetBody 

func (p *BaseFrame) SetBody(body *common.ByteBuff)

SetBody set frame body.

func (*BaseFrame) SetHeader 

func (p *BaseFrame) SetHeader(h FrameHeader)

SetHeader set frame header.

func (*BaseFrame) WriteTo 

func (p *BaseFrame) WriteTo(w io.Writer) (n int64, err error)

WriteTo write frame to writer.

type Frame 

type Frame interface {
	io.WriterTo
	// Header returns frame FrameHeader.
	Header() FrameHeader
	Body() *common.ByteBuff
	// Release release resources of frame.
	Release()
	// Len returns length of frame.
	Len() int
	// Validate returns error if frame is invalid.
	Validate() error
	// SetHeader set frame header.
	SetHeader(h FrameHeader)
	// SetBody set frame body.
	SetBody(body *common.ByteBuff)
	// Bytes encodes and returns frame in bytes.
	Bytes() []byte
	// IsResumable returns true if frame supports resume.
	IsResumable() bool
}

Frame is a single message containing a request, response, or protocol processing.

func NewFromBase 

func NewFromBase(f *BaseFrame) (frame Frame, err error)

NewFromBase creates a frame from a BaseFrame.

type FrameCancel 

type FrameCancel struct {
	*BaseFrame
}

FrameCancel is frame of cancel.

func NewFrameCancel 

func NewFrameCancel(sid uint32) *FrameCancel

NewFrameCancel returns a new cancel frame.

func (*FrameCancel) String 

func (p *FrameCancel) String() string

func (*FrameCancel) Validate 

func (p *FrameCancel) Validate() (err error)

Validate returns error if frame is invalid.

type FrameError 

type FrameError struct {
	*BaseFrame
}

FrameError is error frame.

func NewFrameError 

func NewFrameError(streamID uint32, code common.ErrorCode, data []byte) *FrameError

NewFrameError returns a new error frame.

func (*FrameError) Error 

func (p *FrameError) Error() string

func (*FrameError) ErrorCode 

func (p *FrameError) ErrorCode() common.ErrorCode

ErrorCode returns error code.

func (*FrameError) ErrorData 

func (p *FrameError) ErrorData() []byte

ErrorData returns error data bytes.

func (*FrameError) Validate 

func (p *FrameError) Validate() (err error)

Validate returns error if frame is invalid.

type FrameFNF 

type FrameFNF struct {
	*BaseFrame
}

FrameFNF is fire and forget frame.

func NewFrameFNF 

func NewFrameFNF(sid uint32, data, metadata []byte, flags ...FrameFlag) *FrameFNF

NewFrameFNF returns a new fire and forget frame.

func (*FrameFNF) Data 

func (p *FrameFNF) Data() []byte

Data returns data bytes.

func (*FrameFNF) DataUTF8 

func (p *FrameFNF) DataUTF8() string

DataUTF8 returns data as UTF8 string.

func (*FrameFNF) Metadata 

func (p *FrameFNF) Metadata() ([]byte, bool)

Metadata returns metadata bytes.

func (*FrameFNF) MetadataUTF8 

func (p *FrameFNF) MetadataUTF8() (metadata string, ok bool)

MetadataUTF8 returns metadata as UTF8 string.

func (*FrameFNF) String 

func (p *FrameFNF) String() string

func (*FrameFNF) Validate 

func (p *FrameFNF) Validate() (err error)

Validate returns error if frame is invalid.

type FrameFlag 

type FrameFlag uint16

FrameFlag is flag of frame.

func (FrameFlag) Check 

func (f FrameFlag) Check(mask FrameFlag) bool

Check returns true if mask exists.

func (FrameFlag) String 

func (f FrameFlag) String() string

type FrameHeader 

type FrameHeader [HeaderLen]byte

FrameHeader is the header fo a RSocke frame. RSocket frames begin with a RSocket Frame Header. It includes StreamID, FrameType and Flags.

func NewFrameHeader 

func NewFrameHeader(streamID uint32, frameType FrameType, flags ...FrameFlag) FrameHeader

NewFrameHeader returns a new frame header.

func ParseFrameHeader 

func ParseFrameHeader(bs []byte) FrameHeader

ParseFrameHeader parse a header from bytes.

func (FrameHeader) Flag 

func (p FrameHeader) Flag() FrameFlag

Flag returns flag of a frame.

func (FrameHeader) StreamID 

func (p FrameHeader) StreamID() uint32

StreamID returns StreamID.

func (FrameHeader) String 

func (p FrameHeader) String() string

func (FrameHeader) Type 

func (p FrameHeader) Type() FrameType

Type returns frame type.

func (FrameHeader) WriteTo 

func (p FrameHeader) WriteTo(w io.Writer) (int64, error)

WriteTo writes frame header to a writer.

type FrameKeepalive 

type FrameKeepalive struct {
	*BaseFrame
}

FrameKeepalive is keepalive frame.

func NewFrameKeepalive 

func NewFrameKeepalive(position uint64, data []byte, respond bool) *FrameKeepalive

NewFrameKeepalive returns a new keepalive frame.

func (*FrameKeepalive) Data 

func (p *FrameKeepalive) Data() []byte

Data returns data bytes.

func (*FrameKeepalive) LastReceivedPosition 

func (p *FrameKeepalive) LastReceivedPosition() uint64

LastReceivedPosition returns last received position.

func (*FrameKeepalive) String 

func (p *FrameKeepalive) String() string

func (*FrameKeepalive) Validate 

func (p *FrameKeepalive) Validate() (err error)

Validate returns error if frame is invalid.

type FrameLease 

type FrameLease struct {
	*BaseFrame
}

FrameLease is lease frame.

func (*FrameLease) Metadata 

func (p *FrameLease) Metadata() []byte

Metadata returns metadata bytes.

func (*FrameLease) NumberOfRequests 

func (p *FrameLease) NumberOfRequests() uint32

NumberOfRequests returns number of requests.

func (*FrameLease) String 

func (p *FrameLease) String() string

func (*FrameLease) TimeToLive 

func (p *FrameLease) TimeToLive() time.Duration

TimeToLive returns time to live duration.

func (*FrameLease) Validate 

func (p *FrameLease) Validate() (err error)

Validate returns error if frame is invalid.

type FrameMetadataPush 

type FrameMetadataPush struct {
	*BaseFrame
}

FrameMetadataPush is metadata push frame.

func NewFrameMetadataPush 

func NewFrameMetadataPush(metadata []byte) *FrameMetadataPush

NewFrameMetadataPush returns a new metadata push frame.

func (*FrameMetadataPush) Data 

func (p *FrameMetadataPush) Data() []byte

Data returns data bytes.

func (*FrameMetadataPush) DataUTF8 

func (p *FrameMetadataPush) DataUTF8() (data string)

DataUTF8 returns data as UTF8 string.

func (*FrameMetadataPush) Metadata 

func (p *FrameMetadataPush) Metadata() ([]byte, bool)

Metadata returns metadata bytes.

func (*FrameMetadataPush) MetadataUTF8 

func (p *FrameMetadataPush) MetadataUTF8() (metadata string, ok bool)

MetadataUTF8 returns metadata as UTF8 string.

func (*FrameMetadataPush) String 

func (p *FrameMetadataPush) String() string

func (*FrameMetadataPush) Validate 

func (p *FrameMetadataPush) Validate() (err error)

Validate returns error if frame is invalid.

type FramePayload 

type FramePayload struct {
	*BaseFrame
}

FramePayload is payload frame.

func NewFramePayload 

func NewFramePayload(id uint32, data, metadata []byte, flags ...FrameFlag) *FramePayload

NewFramePayload returns a new payload frame.

func (*FramePayload) Data 

func (p *FramePayload) Data() []byte

Data returns data bytes.

func (*FramePayload) DataUTF8 

func (p *FramePayload) DataUTF8() string

DataUTF8 returns data as UTF8 string.

func (*FramePayload) Metadata 

func (p *FramePayload) Metadata() ([]byte, bool)

Metadata returns metadata bytes.

func (*FramePayload) MetadataUTF8 

func (p *FramePayload) MetadataUTF8() (metadata string, ok bool)

MetadataUTF8 returns metadata as UTF8 string.

func (*FramePayload) String 

func (p *FramePayload) String() string

func (*FramePayload) Validate 

func (p *FramePayload) Validate() (err error)

Validate returns error if frame is invalid.

type FrameRequestChannel 

type FrameRequestChannel struct {
	*BaseFrame
}

FrameRequestChannel is frame for RequestChannel.

func NewFrameRequestChannel 

func NewFrameRequestChannel(sid uint32, n uint32, data, metadata []byte, flags ...FrameFlag) *FrameRequestChannel

NewFrameRequestChannel returns a new RequestChannel frame.

func (*FrameRequestChannel) Data 

func (p *FrameRequestChannel) Data() []byte

Data returns data bytes.

func (*FrameRequestChannel) DataUTF8 

func (p *FrameRequestChannel) DataUTF8() string

DataUTF8 returns data as UTF8 string.

func (*FrameRequestChannel) InitialRequestN 

func (p *FrameRequestChannel) InitialRequestN() uint32

InitialRequestN returns initial N.

func (*FrameRequestChannel) Metadata 

func (p *FrameRequestChannel) Metadata() ([]byte, bool)

Metadata returns metadata bytes.

func (*FrameRequestChannel) MetadataUTF8 

func (p *FrameRequestChannel) MetadataUTF8() (metadata string, ok bool)

MetadataUTF8 returns metadata as UTF8 string.

func (*FrameRequestChannel) String 

func (p *FrameRequestChannel) String() string

func (*FrameRequestChannel) Validate 

func (p *FrameRequestChannel) Validate() (err error)

Validate returns error if frame is invalid.

type FrameRequestN 

type FrameRequestN struct {
	*BaseFrame
}

FrameRequestN is RequestN frame.

func NewFrameRequestN 

func NewFrameRequestN(sid, n uint32, flags ...FrameFlag) *FrameRequestN

NewFrameRequestN returns a new RequestN frame.

func (*FrameRequestN) N 

func (p *FrameRequestN) N() uint32

N returns N in RequestN.

func (*FrameRequestN) String 

func (p *FrameRequestN) String() string

func (*FrameRequestN) Validate 

func (p *FrameRequestN) Validate() (err error)

Validate returns error if frame is invalid.

type FrameRequestResponse 

type FrameRequestResponse struct {
	*BaseFrame
}

FrameRequestResponse is frame for requesting single response.

func NewFrameRequestResponse 

func NewFrameRequestResponse(id uint32, data, metadata []byte, flags ...FrameFlag) *FrameRequestResponse

NewFrameRequestResponse returns a new RequestResponse frame.

func (*FrameRequestResponse) Data 

func (p *FrameRequestResponse) Data() []byte

Data returns data bytes.

func (*FrameRequestResponse) DataUTF8 

func (p *FrameRequestResponse) DataUTF8() string

DataUTF8 returns data as UTF8 string.

func (*FrameRequestResponse) Metadata 

func (p *FrameRequestResponse) Metadata() ([]byte, bool)

Metadata returns metadata bytes.

func (*FrameRequestResponse) MetadataUTF8 

func (p *FrameRequestResponse) MetadataUTF8() (metadata string, ok bool)

MetadataUTF8 returns metadata as UTF8 string.

func (*FrameRequestResponse) String 

func (p *FrameRequestResponse) String() string

func (*FrameRequestResponse) Validate 

func (p *FrameRequestResponse) Validate() (err error)

Validate returns error if frame is invalid.

type FrameRequestStream 

type FrameRequestStream struct {
	*BaseFrame
}

FrameRequestStream is frame for requesting a completable stream.

func NewFrameRequestStream 

func NewFrameRequestStream(id uint32, n uint32, data, metadata []byte, flags ...FrameFlag) *FrameRequestStream

NewFrameRequestStream returns a new request stream frame.

func (*FrameRequestStream) Data 

func (p *FrameRequestStream) Data() []byte

Data returns data bytes.

func (*FrameRequestStream) DataUTF8 

func (p *FrameRequestStream) DataUTF8() string

DataUTF8 returns data as UTF8 string.

func (*FrameRequestStream) InitialRequestN 

func (p *FrameRequestStream) InitialRequestN() uint32

InitialRequestN returns initial request N.

func (*FrameRequestStream) Metadata 

func (p *FrameRequestStream) Metadata() ([]byte, bool)

Metadata returns metadata bytes.

func (*FrameRequestStream) MetadataUTF8 

func (p *FrameRequestStream) MetadataUTF8() (metadata string, ok bool)

MetadataUTF8 returns metadata as UTF8 string.

func (*FrameRequestStream) String 

func (p *FrameRequestStream) String() string

func (*FrameRequestStream) Validate 

func (p *FrameRequestStream) Validate() (err error)

Validate returns error if frame is invalid.

type FrameResume 

type FrameResume struct {
	*BaseFrame
}

FrameResume represents a frame of Resume.

func NewFrameResume 

func NewFrameResume(version common.Version, token []byte, firstAvailableClientPosition, lastReceivedServerPosition uint64) *FrameResume

NewFrameResume creates a new frame of Resume.

func (*FrameResume) FirstAvailableClientPosition 

func (p *FrameResume) FirstAvailableClientPosition() uint64

FirstAvailableClientPosition returns first available client position.

func (*FrameResume) LastReceivedServerPosition 

func (p *FrameResume) LastReceivedServerPosition() uint64

LastReceivedServerPosition returns last received server position.

func (*FrameResume) String 

func (p *FrameResume) String() string

func (*FrameResume) Token 

func (p *FrameResume) Token() []byte

Token returns resume token in bytes.

func (*FrameResume) Validate 

func (p *FrameResume) Validate() (err error)

Validate validate current frame.

func (*FrameResume) Version 

func (p *FrameResume) Version() common.Version

Version returns version.

type FrameResumeOK 

type FrameResumeOK struct {
	*BaseFrame
}

FrameResumeOK represents a frame of ResumeOK.

func NewResumeOK 

func NewResumeOK(position uint64) *FrameResumeOK

NewResumeOK creates a new frame of ResumeOK.

func (*FrameResumeOK) LastReceivedClientPosition 

func (p *FrameResumeOK) LastReceivedClientPosition() uint64

LastReceivedClientPosition returns last received client position.

func (*FrameResumeOK) String 

func (p *FrameResumeOK) String() string

func (*FrameResumeOK) Validate 

func (p *FrameResumeOK) Validate() (err error)

Validate validate current frame.

type FrameSetup 

type FrameSetup struct {
	*BaseFrame
}

FrameSetup is sent by client to initiate protocol processing.

func NewFrameSetup 

func NewFrameSetup(
	version common.Version,
	timeBetweenKeepalive,
	maxLifetime time.Duration,
	token []byte,
	mimeMetadata []byte,
	mimeData []byte,
	data []byte,
	metadata []byte,
) *FrameSetup

NewFrameSetup returns a new setup frame.

func (*FrameSetup) Data 

func (p *FrameSetup) Data() []byte

Data returns data bytes.

func (*FrameSetup) DataMimeType 

func (p *FrameSetup) DataMimeType() (mime string)

DataMimeType returns MIME of data.

func (*FrameSetup) DataUTF8 

func (p *FrameSetup) DataUTF8() string

DataUTF8 returns data as UTF8 string.

func (*FrameSetup) MaxLifetime 

func (p *FrameSetup) MaxLifetime() time.Duration

MaxLifetime returns keepalive max lifetime.

func (*FrameSetup) Metadata 

func (p *FrameSetup) Metadata() ([]byte, bool)

Metadata returns metadata bytes.

func (*FrameSetup) MetadataMimeType 

func (p *FrameSetup) MetadataMimeType() string

MetadataMimeType returns MIME of metadata.

func (*FrameSetup) MetadataUTF8 

func (p *FrameSetup) MetadataUTF8() (metadata string, ok bool)

MetadataUTF8 returns metadata as UTF8 string

func (*FrameSetup) String 

func (p *FrameSetup) String() string

func (*FrameSetup) TimeBetweenKeepalive 

func (p *FrameSetup) TimeBetweenKeepalive() time.Duration

TimeBetweenKeepalive returns keepalive interval duration.

func (*FrameSetup) Token 

func (p *FrameSetup) Token() []byte

Token returns token of setup.

func (*FrameSetup) Validate 

func (p *FrameSetup) Validate() (err error)

Validate returns error if frame is invalid.

func (*FrameSetup) Version 

func (p *FrameSetup) Version() common.Version

Version returns version.

type FrameType 

type FrameType uint8

FrameType is type of frame. 

const (
	FrameTypeReserved        FrameType = 0x00
	FrameTypeSetup           FrameType = 0x01
	FrameTypeLease           FrameType = 0x02
	FrameTypeKeepalive       FrameType = 0x03
	FrameTypeRequestResponse FrameType = 0x04
	FrameTypeRequestFNF      FrameType = 0x05
	FrameTypeRequestStream   FrameType = 0x06
	FrameTypeRequestChannel  FrameType = 0x07
	FrameTypeRequestN        FrameType = 0x08
	FrameTypeCancel          FrameType = 0x09
	FrameTypePayload         FrameType = 0x0A
	FrameTypeError           FrameType = 0x0B
	FrameTypeMetadataPush    FrameType = 0x0C
	FrameTypeResume          FrameType = 0x0D
	FrameTypeResumeOK        FrameType = 0x0E
	FrameTypeExt             FrameType = 0x3F
)

All frame types

func (FrameType) String 

func (f FrameType) String() string

Source Files

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