code: func (s *server) BroadcastMessage(msg wire.Message, exclPeers ...*serverPeer) {
  	// XXX: Need to determine if this is an alert that has already been
  	// broadcast and refrain from broadcasting again.
  	bmsg := broadcastMsg{message: msg, excludePeers: exclPeers}
  	s.broadcast <- bmsg
  }
docs: // BroadcastMessage sends msg to all peers currently connected to the server
  // except those in the passed peers to exclude.