protocol

Documentation

Index

• Constants
• Variables
• func WriteIndex(w io.Writer, idx []FileInfo) (int, error)
• type BlockInfo
• type Connection
  • func NewConnection(nodeID string, reader io.Reader, writer io.Writer, receiver Model) *Connection
  • func (c *Connection) ID() string
  • func (c *Connection) Index(idx []FileInfo)
  • func (c *Connection) Request(name string, offset int64, size uint32, hash []byte) ([]byte, error)
  • func (c *Connection) Statistics() Statistics
• type FileInfo
  • func ReadIndex(r io.Reader) ([]FileInfo, error)
• type Model
• type Statistics

Constants

const (
	FlagDeleted = 1 << 12
	FlagInvalid = 1 << 13
)

Variables

var ErrClosed = errors.New("Connection closed")

var ErrFieldLengthExceeded = errors.New("Raw bytes field size exceeds limit")

Functions

func WriteIndex

func WriteIndex(w io.Writer, idx []FileInfo) (int, error)

Types

type BlockInfo

type BlockInfo struct {
	Size uint32
	Hash []byte
}

type Connection

type Connection struct {
	sync.RWMutex
	// contains filtered or unexported fields
}

func NewConnection

func NewConnection(nodeID string, reader io.Reader, writer io.Writer, receiver Model) *Connection

func (*Connection) ID

func (c *Connection) ID() string

func (*Connection) Index

func (c *Connection) Index(idx []FileInfo)

Index writes the list of file information to the connected peer node

func (*Connection) Request

func (c *Connection) Request(name string, offset int64, size uint32, hash []byte) ([]byte, error)

Request returns the bytes for the specified block after fetching them from the connected peer.

func (*Connection) Statistics

func (c *Connection) Statistics() Statistics

type FileInfo

type FileInfo struct {
	Name     string
	Flags    uint32
	Modified int64
	Version  uint32
	Blocks   []BlockInfo
}

func ReadIndex

func ReadIndex(r io.Reader) ([]FileInfo, error)

type Model

type Model interface {
	// An index was received from the peer node
	Index(nodeID string, files []FileInfo)
	// An index update was received from the peer node
	IndexUpdate(nodeID string, files []FileInfo)
	// A request was made by the peer node
	Request(nodeID, name string, offset int64, size uint32, hash []byte) ([]byte, error)
	// The peer node closed the connection
	Close(nodeID string, err error)
}

type Statistics

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