polish the logic of avoiding doing some unnessary work when # of peers is 0

p2p/peer.go

@@ -37,6 +37,9 @@ func SendMessage(peer Peer, msg []byte) {
 
 // BroadcastMessage sends the message to a list of peers
 func BroadcastMessage(peers []Peer, msg []byte) {
+	if len(peers) == 0 {
+		return
+	}
 	// Construct broadcast p2p message
 	content := ConstructP2pMessage(byte(17), msg)
 
@@ -77,10 +80,8 @@ func BroadcastMessageFromLeader(peers []Peer, msg []byte) {
 // BroadcastMessage sends the message to a list of peers from a validator.
 func BroadcastMessageFromValidator(selfPeer Peer, peers []Peer, msg []byte) {
 	peers = SelectMyPeers(peers, selfPeer.ValidatorID*MAX_BROADCAST+1, (selfPeer.ValidatorID+1)*MAX_BROADCAST)
-	if len(peers) > 0 {
 	BroadcastMessage(peers, msg)
 	log.Info("Done sending from validator")
-	}
 }
 
 // ConstructP2pMessage constructs the p2p message as [messageType, contentSize, content]