Enable fast-sync overlays by proto_version 5

Author: SpyCheese

validator/full-node.cpp

@@ -262,7 +262,11 @@ void FullNodeImpl::on_new_masterchain_block(td::Ref<MasterchainState> state, std
     }
   }
 
+  int proto_version = state->get_consensus_config().proto_version;
+  use_old_private_overlays_ = (proto_version < 5);
+
   if (!use_old_private_overlays_) {
+    private_block_overlays_.clear();
     std::set<adnl::AdnlNodeIdShort> my_adnl_ids;
     my_adnl_ids.insert(adnl_id_);
     for (const auto &[adnl_id, _] : local_collator_nodes_) {
@@ -690,14 +694,6 @@ void FullNodeImpl::update_validator_telemetry_collector() {
 }
 
 void FullNodeImpl::start_up() {
-  // TODO: enable fast sync overlays by other means (e.g. some config param)
-  // TODO: in the future - remove the old private overlay entirely
-  // This env var is for testing
-  auto fast_sync_env = getenv("TON_FAST_SYNC_OVERLAYS");
-  if (fast_sync_env && !strcmp(fast_sync_env, "1")) {
-    use_old_private_overlays_ = false;
-  }
-
   update_shard_actor(ShardIdFull{masterchainId}, true);
   if (local_id_.is_zero()) {
     if (adnl_id_.is_zero()) {