package lnwire import ( "fmt" "io" "github.com/roasbeef/btcd/btcec" ) // SingleFundingSignComplete is the message Bob sends to Alice which delivers // a signature for Alice's version of the commitment transaction. After this // message is received and processed by Alice, she is free to broadcast the // funding transaction. type SingleFundingSignComplete struct { // PendingChannelID serves to uniquely identify the future channel // created by the initiated single funder workflow. PendingChannelID [32]byte // CommitSignature is Bobs's signature for Alice's version of the // commitment transaction. CommitSignature *btcec.Signature } // NewSingleFundingSignComplete creates a new empty SingleFundingSignComplete // message. func NewSingleFundingSignComplete(chanID [32]byte, sig *btcec.Signature) *SingleFundingSignComplete { return &SingleFundingSignComplete{ PendingChannelID: chanID, CommitSignature: sig, } } // Decode deserializes the serialized SingleFundingSignComplete stored in the // passed io.Reader into the target SingleFundingComplete using the // deserialization rules defined by the passed protocol version. // // This is part of the lnwire.Message interface. func (c *SingleFundingSignComplete) Decode(r io.Reader, pver uint32) error { return readElements(r, c.PendingChannelID[:], &c.CommitSignature) } // Encode serializes the target SingleFundingSignComplete into the passed // io.Writer implementation. Serialization will observe the rules defined by // the passed protocol version. // // This is part of the lnwire.Message interface. func (c *SingleFundingSignComplete) Encode(w io.Writer, pver uint32) error { return writeElements(w, c.PendingChannelID[:], c.CommitSignature) } // Command returns the uint32 code which uniquely identifies this message as a // SingleFundingSignComplete on the wire. // // This is part of the lnwire.Message interface. func (c *SingleFundingSignComplete) Command() uint32 { return CmdSingleFundingSignComplete } // MaxPayloadLength returns the maximum allowed payload length for a // SingleFundingSignComplete. This is calculated by summing the max length of // all the fields within a SingleFundingSignComplete. // // This is part of the lnwire.Message interface. func (c *SingleFundingSignComplete) MaxPayloadLength(uint32) uint32 { // 32 + 64 return 96 } // Validate examines each populated field within the SingleFundingSignComplete // for field sanity. // // This is part of the lnwire.Message interface. func (c *SingleFundingSignComplete) Validate() error { if c.CommitSignature == nil { return fmt.Errorf("commitment signature must be non-nil") } // We're good! return nil }