68 lines
1.9 KiB
Go
68 lines
1.9 KiB
Go
package lnwire
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import "io"
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// Init is the first message reveals the features supported or required by this
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// node. Nodes wait for receipt of the other's features to simplify error
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// diagnosis where features are incompatible. Each node MUST wait to receive
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// init before sending any other messages.
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type Init struct {
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// GlobalFeatures is feature vector which affects HTLCs and thus are
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// also advertised to other nodes.
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GlobalFeatures *RawFeatureVector
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// LocalFeatures is feature vector which only affect the protocol
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// between two nodes.
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LocalFeatures *RawFeatureVector
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}
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// NewInitMessage creates new instance of init message object.
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func NewInitMessage(gf *RawFeatureVector, lf *RawFeatureVector) *Init {
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return &Init{
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GlobalFeatures: gf,
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LocalFeatures: lf,
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}
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}
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// A compile time check to ensure Init implements the lnwire.Message
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// interface.
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var _ Message = (*Init)(nil)
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// Decode deserializes a serialized Init 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 (msg *Init) Decode(r io.Reader, pver uint32) error {
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return readElements(r,
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&msg.LocalFeatures,
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&msg.GlobalFeatures,
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)
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}
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// Encode serializes the target Init into the passed io.Writer observing
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// 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 (msg *Init) Encode(w io.Writer, pver uint32) error {
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return writeElements(w,
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msg.LocalFeatures,
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msg.GlobalFeatures,
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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 (msg *Init) MsgType() MessageType {
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return MsgInit
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}
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// MaxPayloadLength returns the maximum allowed payload size for a Init
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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 (msg *Init) MaxPayloadLength(uint32) uint32 {
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return 2 + maxAllowedSize + 2 + maxAllowedSize
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}
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