7f36b70a4a
This commit adds the new set of single funder messages from the specification. As a result, after this commit and a follow up, all of our messages will directly line up with those that are detailed within the specification. The new set of funding messages are very similar to our prior ones, aside from the main difference of the addition of several channel level constraints that give nodes control over their exposure, throughput, and other values.
68 lines
2.3 KiB
Go
68 lines
2.3 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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"github.com/roasbeef/btcd/wire"
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)
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// FundingCreated is sent from Alice (the initiator) to Bob (the responder),
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// once Alice receives Bob's contributions as well as his channel constraints.
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// Once bob receives this message, he'll gain access to an immediately
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// broadcastable commitment transaction and will reply with a signature for
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// Alice's version of the commitment transaction.
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type FundingCreated struct {
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// PendingChannelID serves to uniquely identify the future channel
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// created by the initiated single funder workflow.
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PendingChannelID [32]byte
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// FundingPoint is the outpoint of the funding transaction created by
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// Alice. With this, Bob is able to generate both his version and
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// Alice's version of the commitment transaction.
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FundingPoint wire.OutPoint
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// CommitSig is Alice's signature from Bob's version of the commitment
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// transaction.
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CommitSig *btcec.Signature
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}
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// A compile time check to ensure FundingCreated implements the lnwire.Message
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// interface.
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var _ Message = (*FundingCreated)(nil)
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// Encode serializes the target FundingCreated into the passed io.Writer
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// implementation. Serialization will observe the rules defined by the passed
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// protocol version.
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//
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// This is part of the lnwire.Message interface.
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func (f *FundingCreated) Encode(w io.Writer, pver uint32) error {
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return writeElements(w, f.PendingChannelID[:], f.FundingPoint, f.CommitSig)
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}
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// Decode deserializes the serialized FundingCreated stored in the passed
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// io.Reader into the target FundingCreated using the deserialization rules
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// defined by the passed protocol version.
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//
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// This is part of the lnwire.Message interface.
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func (f *FundingCreated) Decode(r io.Reader, pver uint32) error {
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return readElements(r, f.PendingChannelID[:], &f.FundingPoint, &f.CommitSig)
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}
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// MsgType returns the uint32 code which uniquely identifies this message as a
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// FundingCreated on the wire.
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//
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// This is part of the lnwire.Message interface.
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func (f *FundingCreated) MsgType() MessageType {
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return MsgFundingCreated
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}
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// MaxPayloadLength returns the maximum allowed payload length for a
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// FundingCreated message.
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//
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// This is part of the lnwire.Message interface.
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func (f *FundingCreated) MaxPayloadLength(uint32) uint32 {
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// 32 + 32 + 2 + 64
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return 130
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}
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