Revert "Always use BlockSummariesMessage V1 (instead of V2) when resp…

…onding to GetBlockSummaries requests."

This reverts commit 2d58118.

src/main/java/org/qortal/controller/Controller.java

@@ -1430,7 +1430,9 @@ private void onNetworkGetBlockSummariesMessage(Peer peer, Message message) {
 		// then we have no blocks after that and can short-circuit with an empty response
 		BlockData chainTip = getChainTip();
 		if (chainTip != null && Arrays.equals(parentSignature, chainTip.getSignature())) {
-			Message blockSummariesMessage = new BlockSummariesMessage(Collections.emptyList());
+			Message blockSummariesMessage = peer.getPeersVersion() >= BlockSummariesV2Message.MINIMUM_PEER_VERSION
+					? new BlockSummariesV2Message(Collections.emptyList())
+					: new BlockSummariesMessage(Collections.emptyList());
 
 			blockSummariesMessage.setId(message.getId());
 
@@ -1489,7 +1491,9 @@ private void onNetworkGetBlockSummariesMessage(Peer peer, Message message) {
 				this.stats.getBlockSummariesStats.fullyFromCache.incrementAndGet();
 		}
 
-		Message blockSummariesMessage = new BlockSummariesMessage(blockSummaries);
+		Message blockSummariesMessage = peer.getPeersVersion() >= BlockSummariesV2Message.MINIMUM_PEER_VERSION
+				? new BlockSummariesV2Message(blockSummaries)
+				: new BlockSummariesMessage(blockSummaries);
 		blockSummariesMessage.setId(message.getId());
 		if (!peer.sendMessage(blockSummariesMessage))
 			peer.disconnect("failed to send block summaries");