7569cca19b
To avoid code changing underneath the static migrations, we copy the lnwire dependency in its current form into the migration directory. Ideally the migrations doesn't depend on any code that might change, this takes us a step closer.
74 lines
2.2 KiB
Go
74 lines
2.2 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 a legacy feature vector used for backwards
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// compatibility with older nodes. Any features defined here should be
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// merged with those presented in Features.
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GlobalFeatures *RawFeatureVector
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// Features is a feature vector containing the features supported by
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// the remote node.
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//
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// NOTE: Older nodes may place some features in GlobalFeatures, but all
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// new features are to be added in Features. When handling an Init
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// message, any GlobalFeatures should be merged into the unified
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// Features field.
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Features *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, f *RawFeatureVector) *Init {
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return &Init{
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GlobalFeatures: gf,
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Features: f,
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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.GlobalFeatures,
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&msg.Features,
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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.GlobalFeatures,
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msg.Features,
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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 an 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 + 2 + maxAllowedSize + 2 + maxAllowedSize
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}
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