diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/HashByteSet.java b/protocol/src/main/java/com/zfoo/protocol/collection/HashByteSet.java
index 9a751434..bfcfa40c 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/HashByteSet.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/HashByteSet.java
@@ -16,6 +16,7 @@ import io.netty.util.collection.ByteObjectHashMap;
 
 import java.util.AbstractSet;
 import java.util.Iterator;
+import java.util.Objects;
 
 /**
  * @author godotg
@@ -72,4 +73,20 @@ public class HashByteSet extends AbstractSet<Byte> {
         map.clear();
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        var obj = (HashByteSet) o;
+        return Objects.equals(map, obj.map);
+    }
+
+    @Override
+    public int hashCode() {
+        return map.hashCode();
+    }
 }
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/HashIntSet.java b/protocol/src/main/java/com/zfoo/protocol/collection/HashIntSet.java
index 37fc4990..3ff9f283 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/HashIntSet.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/HashIntSet.java
@@ -16,6 +16,7 @@ import io.netty.util.collection.IntObjectHashMap;
 
 import java.util.AbstractSet;
 import java.util.Iterator;
+import java.util.Objects;
 
 /**
  * @author godotg
@@ -72,4 +73,20 @@ public class HashIntSet extends AbstractSet<Integer> {
         map.clear();
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        var obj = (HashIntSet) o;
+        return Objects.equals(map, obj.map);
+    }
+
+    @Override
+    public int hashCode() {
+        return map.hashCode();
+    }
 }
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/HashLongSet.java b/protocol/src/main/java/com/zfoo/protocol/collection/HashLongSet.java
index 81593b1b..9afe93ce 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/HashLongSet.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/HashLongSet.java
@@ -16,6 +16,7 @@ import io.netty.util.collection.LongObjectHashMap;
 
 import java.util.AbstractSet;
 import java.util.Iterator;
+import java.util.Objects;
 
 /**
  * @author godotg
@@ -72,4 +73,20 @@ public class HashLongSet extends AbstractSet<Long> {
         map.clear();
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        var obj = (HashLongSet) o;
+        return Objects.equals(map, obj.map);
+    }
+
+    @Override
+    public int hashCode() {
+        return map.hashCode();
+    }
 }
diff --git a/protocol/src/main/java/com/zfoo/protocol/collection/HashShortSet.java b/protocol/src/main/java/com/zfoo/protocol/collection/HashShortSet.java
index 2e493ece..d302567e 100644
--- a/protocol/src/main/java/com/zfoo/protocol/collection/HashShortSet.java
+++ b/protocol/src/main/java/com/zfoo/protocol/collection/HashShortSet.java
@@ -16,6 +16,7 @@ import io.netty.util.collection.ShortObjectHashMap;
 
 import java.util.AbstractSet;
 import java.util.Iterator;
+import java.util.Objects;
 
 /**
  * @author godotg
@@ -72,4 +73,20 @@ public class HashShortSet extends AbstractSet<Short> {
         map.clear();
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        var obj = (HashShortSet) o;
+        return Objects.equals(map, obj.map);
+    }
+
+    @Override
+    public int hashCode() {
+        return map.hashCode();
+    }
 }