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
2.4 KiB
Go
79 lines
2.4 KiB
Go
package lnwire
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import (
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"io"
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"github.com/roasbeef/btcd/btcec"
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)
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// CommitSig is sent by either side to stage any pending HTLC's in the
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// receiver's pending set into a new commitment state. Implicitly, the new
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// commitment transaction constructed which has been signed by CommitSig
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// includes all HTLC's in the remote node's pending set. A CommitSig message
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// may be sent after a series of UpdateAddHTLC/UpdateFufillHTLC messages in
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// order to batch add several HTLC's with a single signature covering all
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// implicitly accepted HTLC's.
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type CommitSig struct {
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// ChanID uniquely identifies to which currently active channel this
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// CommitSig applies to.
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ChanID ChannelID
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// CommitSig is Alice's signature for Bob's new commitment transaction.
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// Alice is able to send this signature without requesting any
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// additional data due to the piggybacking of Bob's next revocation
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// hash in his prior RevokeAndAck message, as well as the canonical
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// ordering used for all inputs/outputs within commitment transactions.
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CommitSig *btcec.Signature
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// TODO(roasbeef): add HTLC sigs after state machine is updated to
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// support that
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}
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// NewCommitSig creates a new empty CommitSig message.
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func NewCommitSig() *CommitSig {
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return &CommitSig{}
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}
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// A compile time check to ensure CommitSig implements the lnwire.Message
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// interface.
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var _ Message = (*CommitSig)(nil)
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// Decode deserializes a serialized CommitSig message stored in the
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// passed 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 *CommitSig) 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.CommitSig,
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)
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}
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// Encode serializes the target CommitSig 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 *CommitSig) 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.CommitSig,
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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 *CommitSig) MsgType() MessageType {
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return MsgCommitSig
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}
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// MaxPayloadLength returns the maximum allowed payload size for a
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// CommitSig 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 *CommitSig) MaxPayloadLength(uint32) uint32 {
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// 32 + 64
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return 96
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}
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