// Broadcast sends a message to all peers with that have the hash in their keyspace.
func (s *Server) Broadcast(hash *uint64, msg *protocol.Message) error {
alreadySentTo := make(map[uint64]bool)
if msg.Gossip {
for _, to := range msg.SentTo {
alreadySentTo[to] = true
}
}
sentTo := []uint64{murmur3.Sum64([]byte(s.LocalPeer().Id))}
var toPeers []*Conn
for _, peer := range s.Peers {
peerHash := murmur3.Sum64([]byte(peer.Peer.Id))
if (hash == nil || peer.Peer.GetKeyspace().Includes(*hash)) && !alreadySentTo[peerHash] {
sentTo = append(sentTo, peerHash)
toPeers = append(toPeers, peer)
}
}
if msg.Gossip {
msg.SentTo = append(msg.SentTo, sentTo...)
}
for _, peer := range toPeers {
s.Printf("Broadcasting to %s", peer.Peer.Id)
if err := peer.Send(msg); err != nil {
return err
}
}
return nil
}
