Fix "Invalid payload REGISTER" error when login (#1319)

arclight-common/src/main/java/io/izzel/arclight/common/mixin/bukkit/StandardMessengerMixin.java

@@ -0,0 +1,19 @@
+package io.izzel.arclight.common.mixin.bukkit;
+
+import org.bukkit.plugin.messaging.Messenger;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.Constant;
+import org.spongepowered.asm.mixin.injection.ModifyConstant;
+import org.bukkit.plugin.messaging.StandardMessenger;
+
+@Mixin(value=StandardMessenger.class, remap = false)
+public abstract class StandardMessengerMixin implements Messenger {
+
+    @ModifyConstant(
+            method = "validateAndCorrectChannel",
+            constant = @Constant(intValue = Messenger.MAX_CHANNEL_SIZE)
+    )
+    private static int modifyMaxChannelSize(int original) {
+        return 256;
+    }
+}

arclight-common/src/main/resources/mixins.arclight.bukkit.json

@@ -42,6 +42,7 @@
     "PluginClassLoaderMixin",
     "PotionEffectTypeMixin",
     "RecipeIteratorMixin",
+    "StandardMessengerMixin",
     "WatchdogThreadMixin"
   ]
 }