Small fixes

src/main/java/refinedstorage/api/network/INetworkNode.java

@@ -53,6 +53,13 @@ public interface INetworkNode {
      */
     void onDisconnected();
 
+    /**
+     * Called when the connection state of this node changes.
+     * This is also called when redstone mode is updated, as opposed to {@link INetworkNode#onConnected(INetworkMaster)} and {@link INetworkNode#onDisconnected()}.
+     *
+     * @param network The network
+     * @param state   The state
+     */
     void onConnectionChange(INetworkMaster network, boolean state);
 
     /**

src/main/java/refinedstorage/block/BlockNode.java

@@ -49,11 +49,7 @@ public abstract class BlockNode extends BlockBase {
     @Override
     public void breakBlock(World world, BlockPos pos, IBlockState state) {
         if (!world.isRemote) {
-            TileNode node = (TileNode) world.getTileEntity(pos);
+            ((TileNode) world.getTileEntity(pos)).onBreak(world);
-
-            if (node.isConnected()) {
-                node.onBreak(world);
-            }
         }
 
         super.breakBlock(world, pos, state);

src/main/java/refinedstorage/tile/TileNode.java

@@ -126,6 +126,10 @@ public abstract class TileNode extends TileBase implements INetworkNode, ISynchr
 
     @Override
     public void onBreak(World world) {
+        if (network == null) {
+            return;
+        }
+
         List<INetworkNode> nodes = new ArrayList<INetworkNode>();
         Set<BlockPos> nodesPos = new HashSet<BlockPos>();
 
@@ -184,10 +188,6 @@ public abstract class TileNode extends TileBase implements INetworkNode, ISynchr
 
         this.connected = true;
         this.network = network;
-
-        if (canSendConnectivityUpdate()) {
-            RefinedStorageUtils.updateBlock(worldObj, pos);
-        }
     }
 
     @Override
@@ -196,10 +196,6 @@ public abstract class TileNode extends TileBase implements INetworkNode, ISynchr
 
         this.connected = false;
         this.network = null;
-
-        if (canSendConnectivityUpdate()) {
-            RefinedStorageUtils.updateBlock(worldObj, pos);
-        }
     }
 
     @Override