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Code Issues Releases Wiki Activity

Check for duplicate ids when registering channels

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Should prevent #1130 occurring again. Possibly worth submitting a PR to
Forge for this too.
This commit is contained in:
Jonathan Coates
2022-07-08 08:27:37 +01:00
parent 954254e7e4
commit be3a960273
1 changed files with 5 additions and 1 deletions
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6
src/main/java/dan200/computercraft/shared/network/NetworkHandler.java
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@@ -9,6 +9,8 @@ import dan200.computercraft.ComputerCraft;
import dan200.computercraft.api.ComputerCraftAPI; import dan200.computercraft.api.ComputerCraftAPI;
import dan200.computercraft.shared.network.client.*; import dan200.computercraft.shared.network.client.*;
import dan200.computercraft.shared.network.server.*; import dan200.computercraft.shared.network.server.*;
import it.unimi.dsi.fastutil.ints.IntOpenHashSet;
import it.unimi.dsi.fastutil.ints.IntSet;
import net.minecraft.entity.player.PlayerEntity; import net.minecraft.entity.player.PlayerEntity;
import net.minecraft.entity.player.ServerPlayerEntity; import net.minecraft.entity.player.ServerPlayerEntity;
import net.minecraft.network.PacketBuffer; import net.minecraft.network.PacketBuffer;
@@ -26,7 +28,8 @@ import java.util.function.Function;
public final class NetworkHandler public final class NetworkHandler
{ {
public static SimpleChannel network; private static SimpleChannel network;
private static final IntSet usedIds = new IntOpenHashSet();
private NetworkHandler() private NetworkHandler()
{ {
@@ -100,6 +103,7 @@ public final class NetworkHandler
*/ */
private static <T extends NetworkMessage> void registerMainThread( int id, NetworkDirection direction, Class<T> type, Function<PacketBuffer, T> decoder ) private static <T extends NetworkMessage> void registerMainThread( int id, NetworkDirection direction, Class<T> type, Function<PacketBuffer, T> decoder )
{ {
if( !usedIds.add( id ) ) throw new IllegalStateException( "Duplicate message kind for for id " + id );
network.messageBuilder( type, id, direction ) network.messageBuilder( type, id, direction )
.encoder( NetworkMessage::toBytes ) .encoder( NetworkMessage::toBytes )
.decoder( decoder ) .decoder( decoder )