extension

Documentation

Index

• Constants
• Variables
• func GetTransferData(extendedData GsExtended) (datatransfer.Message, error)
• func ToExtensionData(msg datatransfer.Message, supportedExtensions []graphsync.ExtensionName) ([]graphsync.ExtensionData, error)
• type GsExtended

Constants

const (
	// ExtensionDataTransfer1_1 is the identifier for the current data transfer extension to graphsync
	ExtensionDataTransfer1_1 = graphsync.ExtensionName("fil/data-transfer/1.1")
	// ExtensionDataTransfer1_0 is the identifier for the legacy data transfer extension to graphsync
	ExtensionDataTransfer1_0 = graphsync.ExtensionName("fil/data-transfer")
)

Variables

var ProtocolMap = map[graphsync.ExtensionName]protocol.ID{
	ExtensionDataTransfer1_1: datatransfer.ProtocolDataTransfer1_1,
	ExtensionDataTransfer1_0: datatransfer.ProtocolDataTransfer1_0,
}

ProtocolMap maps graphsync extensions to their libp2p protocols

Functions

func GetTransferData

func GetTransferData(extendedData GsExtended) (datatransfer.Message, error)

GetTransferData unmarshals extension data. Returns:

• nil + nil if the extension is not found
• nil + error if the extendedData fails to unmarshal
• unmarshaled ExtensionDataTransferData + nil if all goes well

func ToExtensionData

func ToExtensionData(msg datatransfer.Message, supportedExtensions []graphsync.ExtensionName) ([]graphsync.ExtensionData, error)

ToExtensionData converts a message to a graphsync extension

Types

type GsExtended

type GsExtended interface {
	Extension(name graphsync.ExtensionName) ([]byte, bool)
}

GsExtended is a small interface used by getExtensionData