protocol

package
v0.10.20 Latest Latest
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 Go to latest Published: Jan 13, 2015 License: MIT, GPL-3.0 Imports: 20 Imported by: 0

README

The BEPv1 Protocol

Latest Build API Documentation MIT License

This is the protocol implementation used by Syncthing.

License

MIT

Documentation

Overview

Package protocol implements the Block Exchange Protocol.

Index

Constants

View Source 
const (
	FlagDeleted              uint32 = 1 << 12
	FlagInvalid                     = 1 << 13
	FlagDirectory                   = 1 << 14
	FlagNoPermBits                  = 1 << 15
	FlagSymlink                     = 1 << 16
	FlagSymlinkMissingTarget        = 1 << 17

	SymlinkTypeMask = FlagDirectory | FlagSymlinkMissingTarget
)
View Source 
const (
	FlagShareTrusted  uint32 = 1 << 0
	FlagShareReadOnly        = 1 << 1
	FlagIntroducer           = 1 << 2
	FlagShareBits            = 0x000000ff
)
View Source 
const (
	BlockSize = 128 * 1024
)

Variables

View Source 
var (
	ErrClusterHash = fmt.Errorf("configuration error: mismatched cluster hash")
	ErrClosed      = errors.New("connection closed")
)
View Source 
var LocalDeviceID = DeviceID{0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}

Functions

func TotalInOut 

func TotalInOut() (uint64, uint64)

Types

type BlockInfo 

type BlockInfo struct {
	Offset int64 // noencode (cache only)
	Size   uint32
	Hash   []byte // max:64
}

func (BlockInfo) AppendXDR 

func (o BlockInfo) AppendXDR(bs []byte) ([]byte, error)

func (*BlockInfo) DecodeXDR 

func (o *BlockInfo) DecodeXDR(r io.Reader) error

func (BlockInfo) EncodeXDR 

func (o BlockInfo) EncodeXDR(w io.Writer) (int, error)

func (BlockInfo) MarshalXDR 

func (o BlockInfo) MarshalXDR() ([]byte, error)

func (BlockInfo) MustMarshalXDR 

func (o BlockInfo) MustMarshalXDR() []byte

func (BlockInfo) String 

func (b BlockInfo) String() string

func (*BlockInfo) UnmarshalXDR 

func (o *BlockInfo) UnmarshalXDR(bs []byte) error

type CloseMessage 

type CloseMessage struct {
	Reason string // max:1024
	Code   uint32
}

func (CloseMessage) AppendXDR 

func (o CloseMessage) AppendXDR(bs []byte) ([]byte, error)

func (*CloseMessage) DecodeXDR 

func (o *CloseMessage) DecodeXDR(r io.Reader) error

func (CloseMessage) EncodeXDR 

func (o CloseMessage) EncodeXDR(w io.Writer) (int, error)

func (CloseMessage) MarshalXDR 

func (o CloseMessage) MarshalXDR() ([]byte, error)

func (CloseMessage) MustMarshalXDR 

func (o CloseMessage) MustMarshalXDR() []byte

func (*CloseMessage) UnmarshalXDR 

func (o *CloseMessage) UnmarshalXDR(bs []byte) error

type ClusterConfigMessage 

type ClusterConfigMessage struct {
	ClientName    string   // max:64
	ClientVersion string   // max:64
	Folders       []Folder // max:64
	Options       []Option // max:64
}

func (ClusterConfigMessage) AppendXDR 

func (o ClusterConfigMessage) AppendXDR(bs []byte) ([]byte, error)

func (*ClusterConfigMessage) DecodeXDR 

func (o *ClusterConfigMessage) DecodeXDR(r io.Reader) error

func (ClusterConfigMessage) EncodeXDR 

func (o ClusterConfigMessage) EncodeXDR(w io.Writer) (int, error)

func (*ClusterConfigMessage) GetOption 

func (o *ClusterConfigMessage) GetOption(key string) string

func (ClusterConfigMessage) MarshalXDR 

func (o ClusterConfigMessage) MarshalXDR() ([]byte, error)

func (ClusterConfigMessage) MustMarshalXDR 

func (o ClusterConfigMessage) MustMarshalXDR() []byte

func (*ClusterConfigMessage) UnmarshalXDR 

func (o *ClusterConfigMessage) UnmarshalXDR(bs []byte) error

type Connection 

type Connection interface {
	ID() DeviceID
	Name() string
	Index(folder string, files []FileInfo) error
	IndexUpdate(folder string, files []FileInfo) error
	Request(folder string, name string, offset int64, size int) ([]byte, error)
	ClusterConfig(config ClusterConfigMessage)
	Statistics() Statistics
}

func NewConnection 

func NewConnection(deviceID DeviceID, reader io.Reader, writer io.Writer, receiver Model, name string, compress bool) Connection

type Device 

type Device struct {
	ID              []byte // max:32
	Flags           uint32
	MaxLocalVersion uint64
}

func (Device) AppendXDR 

func (o Device) AppendXDR(bs []byte) ([]byte, error)

func (*Device) DecodeXDR 

func (o *Device) DecodeXDR(r io.Reader) error

func (Device) EncodeXDR 

func (o Device) EncodeXDR(w io.Writer) (int, error)

func (Device) MarshalXDR 

func (o Device) MarshalXDR() ([]byte, error)

func (Device) MustMarshalXDR 

func (o Device) MustMarshalXDR() []byte

func (*Device) UnmarshalXDR 

func (o *Device) UnmarshalXDR(bs []byte) error

type DeviceID 

type DeviceID [32]byte

func DeviceIDFromBytes 

func DeviceIDFromBytes(bs []byte) DeviceID

func DeviceIDFromString 

func DeviceIDFromString(s string) (DeviceID, error)

func NewDeviceID 

func NewDeviceID(rawCert []byte) DeviceID

NewDeviceID generates a new device ID from the raw bytes of a certificate

func (DeviceID) Compare 

func (n DeviceID) Compare(other DeviceID) int

func (DeviceID) Equals 

func (n DeviceID) Equals(other DeviceID) bool

func (DeviceID) GoString 

func (n DeviceID) GoString() string

func (*DeviceID) MarshalText 

func (n *DeviceID) MarshalText() ([]byte, error)

func (DeviceID) String 

func (n DeviceID) String() string

String returns the canonical string representation of the device ID

func (*DeviceID) UnmarshalText 

func (n *DeviceID) UnmarshalText(bs []byte) error

type EmptyMessage 

type EmptyMessage struct{}

func (EmptyMessage) AppendXDR 

func (o EmptyMessage) AppendXDR(bs []byte) ([]byte, error)

func (*EmptyMessage) DecodeXDR 

func (o *EmptyMessage) DecodeXDR(r io.Reader) error

func (EmptyMessage) EncodeXDR 

func (o EmptyMessage) EncodeXDR(w io.Writer) (int, error)

func (EmptyMessage) MarshalXDR 

func (o EmptyMessage) MarshalXDR() ([]byte, error)

func (EmptyMessage) MustMarshalXDR 

func (o EmptyMessage) MustMarshalXDR() []byte

func (*EmptyMessage) UnmarshalXDR 

func (o *EmptyMessage) UnmarshalXDR(bs []byte) error

type FileInfo 

type FileInfo struct {
	Name         string // max:8192
	Flags        uint32
	Modified     int64
	Version      uint64
	LocalVersion uint64
	Blocks       []BlockInfo
}

func (FileInfo) AppendXDR 

func (o FileInfo) AppendXDR(bs []byte) ([]byte, error)

func (*FileInfo) DecodeXDR 

func (o *FileInfo) DecodeXDR(r io.Reader) error

func (FileInfo) EncodeXDR 

func (o FileInfo) EncodeXDR(w io.Writer) (int, error)

func (FileInfo) HasPermissionBits 

func (f FileInfo) HasPermissionBits() bool

func (FileInfo) IsDeleted 

func (f FileInfo) IsDeleted() bool

func (FileInfo) IsDirectory 

func (f FileInfo) IsDirectory() bool

func (FileInfo) IsInvalid 

func (f FileInfo) IsInvalid() bool
func (f FileInfo) IsSymlink() bool

func (FileInfo) MarshalXDR 

func (o FileInfo) MarshalXDR() ([]byte, error)

func (FileInfo) MustMarshalXDR 

func (o FileInfo) MustMarshalXDR() []byte

func (FileInfo) Size 

func (f FileInfo) Size() (bytes int64)

func (FileInfo) String 

func (f FileInfo) String() string

func (*FileInfo) UnmarshalXDR 

func (o *FileInfo) UnmarshalXDR(bs []byte) error

type Folder 

type Folder struct {
	ID      string // max:64
	Devices []Device
}

func (Folder) AppendXDR 

func (o Folder) AppendXDR(bs []byte) ([]byte, error)

func (*Folder) DecodeXDR 

func (o *Folder) DecodeXDR(r io.Reader) error

func (Folder) EncodeXDR 

func (o Folder) EncodeXDR(w io.Writer) (int, error)

func (Folder) MarshalXDR 

func (o Folder) MarshalXDR() ([]byte, error)

func (Folder) MustMarshalXDR 

func (o Folder) MustMarshalXDR() []byte

func (*Folder) UnmarshalXDR 

func (o *Folder) UnmarshalXDR(bs []byte) error

type IndexMessage 

type IndexMessage struct {
	Folder  string // max:64
	Files   []FileInfo
	Flags   uint32
	Options []Option // max:64
}

func (IndexMessage) AppendXDR 

func (o IndexMessage) AppendXDR(bs []byte) ([]byte, error)

func (*IndexMessage) DecodeXDR 

func (o *IndexMessage) DecodeXDR(r io.Reader) error

func (IndexMessage) EncodeXDR 

func (o IndexMessage) EncodeXDR(w io.Writer) (int, error)

func (IndexMessage) MarshalXDR 

func (o IndexMessage) MarshalXDR() ([]byte, error)

func (IndexMessage) MustMarshalXDR 

func (o IndexMessage) MustMarshalXDR() []byte

func (*IndexMessage) UnmarshalXDR 

func (o *IndexMessage) UnmarshalXDR(bs []byte) error

type Model 

type Model interface {
	// An index was received from the peer device
	Index(deviceID DeviceID, folder string, files []FileInfo)
	// An index update was received from the peer device
	IndexUpdate(deviceID DeviceID, folder string, files []FileInfo)
	// A request was made by the peer device
	Request(deviceID DeviceID, folder string, name string, offset int64, size int) ([]byte, error)
	// A cluster configuration message was received
	ClusterConfig(deviceID DeviceID, config ClusterConfigMessage)
	// The peer device closed the connection
	Close(deviceID DeviceID, err error)
}

type Option 

type Option struct {
	Key   string // max:64
	Value string // max:1024
}

func (Option) AppendXDR 

func (o Option) AppendXDR(bs []byte) ([]byte, error)

func (*Option) DecodeXDR 

func (o *Option) DecodeXDR(r io.Reader) error

func (Option) EncodeXDR 

func (o Option) EncodeXDR(w io.Writer) (int, error)

func (Option) MarshalXDR 

func (o Option) MarshalXDR() ([]byte, error)

func (Option) MustMarshalXDR 

func (o Option) MustMarshalXDR() []byte

func (*Option) UnmarshalXDR 

func (o *Option) UnmarshalXDR(bs []byte) error

type RequestMessage 

type RequestMessage struct {
	Folder  string // max:64
	Name    string // max:8192
	Offset  uint64
	Size    uint32
	Hash    []byte // max:64
	Flags   uint32
	Options []Option // max:64
}

func (RequestMessage) AppendXDR 

func (o RequestMessage) AppendXDR(bs []byte) ([]byte, error)

func (*RequestMessage) DecodeXDR 

func (o *RequestMessage) DecodeXDR(r io.Reader) error

func (RequestMessage) EncodeXDR 

func (o RequestMessage) EncodeXDR(w io.Writer) (int, error)

func (RequestMessage) MarshalXDR 

func (o RequestMessage) MarshalXDR() ([]byte, error)

func (RequestMessage) MustMarshalXDR 

func (o RequestMessage) MustMarshalXDR() []byte

func (*RequestMessage) UnmarshalXDR 

func (o *RequestMessage) UnmarshalXDR(bs []byte) error

type ResponseMessage 

type ResponseMessage struct {
	Data  []byte
	Error uint32
}

func (ResponseMessage) AppendXDR 

func (o ResponseMessage) AppendXDR(bs []byte) ([]byte, error)

func (*ResponseMessage) DecodeXDR 

func (o *ResponseMessage) DecodeXDR(r io.Reader) error

func (ResponseMessage) EncodeXDR 

func (o ResponseMessage) EncodeXDR(w io.Writer) (int, error)

func (ResponseMessage) MarshalXDR 

func (o ResponseMessage) MarshalXDR() ([]byte, error)

func (ResponseMessage) MustMarshalXDR 

func (o ResponseMessage) MustMarshalXDR() []byte

func (*ResponseMessage) UnmarshalXDR 

func (o *ResponseMessage) UnmarshalXDR(bs []byte) error

type Statistics 

type Statistics struct {
	At            time.Time
	InBytesTotal  uint64
	OutBytesTotal uint64
}

Source Files

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