f6b3c25f95
This commit modifies the Message interface to convert the Command method to a MsgType method that uses a new set of message type for all the defined messages. These new messages types nearly exactly match the message types used within the current draft of the BOLT specifications.
79 lines
2.3 KiB
Go
79 lines
2.3 KiB
Go
package lnwire
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import "io"
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// UpdateFufillHTLC is sent by Alice to Bob when she wishes to settle a
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// particular HTLC referenced by its HTLCKey within a specific active channel
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// referenced by ChannelPoint. A subsequent CommitSig message will be sent by
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// Alice to "lock-in" the removal of the specified HTLC, possible containing a
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// batch signature covering several settled HTLC's.
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type UpdateFufillHTLC struct {
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// ChanID references an active channel which holds the HTLC to be
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// settled.
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ChanID ChannelID
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// ID denotes the exact HTLC stage within the receiving node's
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// commitment transaction to be removed.
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ID uint64
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// PaymentPreimage is the R-value preimage required to fully settle an
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// HTLC.
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PaymentPreimage [32]byte
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}
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// NewUpdateFufillHTLC returns a new empty UpdateFufillHTLC.
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func NewUpdateFufillHTLC(chanID ChannelID, id uint64,
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preimage [32]byte) *UpdateFufillHTLC {
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return &UpdateFufillHTLC{
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ChanID: chanID,
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ID: id,
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PaymentPreimage: preimage,
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}
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}
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// A compile time check to ensure UpdateFufillHTLC implements the lnwire.Message
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// interface.
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var _ Message = (*UpdateFufillHTLC)(nil)
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// Decode deserializes a serialized UpdateFufillHTLC message stored in the passed
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// io.Reader observing the specified protocol version.
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//
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// This is part of the lnwire.Message interface.
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func (c *UpdateFufillHTLC) Decode(r io.Reader, pver uint32) error {
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return readElements(r,
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&c.ChanID,
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&c.ID,
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c.PaymentPreimage[:],
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)
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}
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// Encode serializes the target UpdateFufillHTLC into the passed io.Writer
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// observing the protocol version specified.
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//
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// This is part of the lnwire.Message interface.
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func (c *UpdateFufillHTLC) Encode(w io.Writer, pver uint32) error {
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return writeElements(w,
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c.ChanID,
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c.ID,
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c.PaymentPreimage[:],
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)
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}
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// MsgType returns the integer uniquely identifying this message type on the
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// wire.
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//
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// This is part of the lnwire.Message interface.
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func (c *UpdateFufillHTLC) MsgType() MessageType {
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return MsgUpdateFufillHTLC
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}
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// MaxPayloadLength returns the maximum allowed payload size for a UpdateFufillHTLC
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// complete message observing the specified protocol version.
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//
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// This is part of the lnwire.Message interface.
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func (c *UpdateFufillHTLC) MaxPayloadLength(uint32) uint32 {
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// 32 + 8 + 32
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return 72
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}
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