package lnwire import ( "io" "github.com/btcsuite/btcd/chaincfg/chainhash" ) // GossipTimestampRange is a message that allows the sender to restrict the set // of future gossip announcements sent by the receiver. Nodes should send this // if they have the gossip-queries feature bit active. Nodes are able to send // new GossipTimestampRange messages to replace the prior window. type GossipTimestampRange struct { // ChainHash denotes the chain that the sender wishes to restrict the // set of received announcements of. ChainHash chainhash.Hash // FirstTimestamp is the timestamp of the earliest announcement message // that should be sent by the receiver. FirstTimestamp uint32 // TimestampRange is the horizon beyond the FirstTimestamp that any // announcement messages should be sent for. The receiving node MUST // NOT send any announcements that have a timestamp greater than // FirstTimestamp + TimestampRange. TimestampRange uint32 } // NewGossipTimestampRange creates a new empty GossipTimestampRange message. func NewGossipTimestampRange() *GossipTimestampRange { return &GossipTimestampRange{} } // A compile time check to ensure GossipTimestampRange implements the // lnwire.Message interface. var _ Message = (*GossipTimestampRange)(nil) // Decode deserializes a serialized GossipTimestampRange message stored in the // passed io.Reader observing the specified protocol version. // // This is part of the lnwire.Message interface. func (g *GossipTimestampRange) Decode(r io.Reader, pver uint32) error { return readElements(r, g.ChainHash[:], &g.FirstTimestamp, &g.TimestampRange, ) } // Encode serializes the target GossipTimestampRange into the passed io.Writer // observing the protocol version specified. // // This is part of the lnwire.Message interface. func (g *GossipTimestampRange) Encode(w io.Writer, pver uint32) error { return writeElements(w, g.ChainHash[:], g.FirstTimestamp, g.TimestampRange, ) } // MsgType returns the integer uniquely identifying this message type on the // wire. // // This is part of the lnwire.Message interface. func (g *GossipTimestampRange) MsgType() MessageType { return MsgGossipTimestampRange } // MaxPayloadLength returns the maximum allowed payload size for a // GossipTimestampRange complete message observing the specified protocol // version. // // This is part of the lnwire.Message interface. func (c *GossipTimestampRange) MaxPayloadLength(uint32) uint32 { // 32 + 4 + 4 // // TODO(roasbeef): update to 8 byte timestmaps? return 40 }