diff --git a/src/org/redkale/net/http/WebSocketPacket.java b/src/org/redkale/net/http/WebSocketPacket.java
index 50aeace3f..8ec53e9ee 100644
--- a/src/org/redkale/net/http/WebSocketPacket.java
+++ b/src/org/redkale/net/http/WebSocketPacket.java
@@ -112,7 +112,7 @@ public final class WebSocketPacket {
     ByteBuffer[] duplicateSendBuffers() {
         ByteBuffer[] rs = new ByteBuffer[this.sendBuffers.length];
         for (int i = 0; i < this.sendBuffers.length; i++) {
-            rs[i] = this.sendBuffers[i].duplicate();
+            rs[i] = this.sendBuffers[i].duplicate().asReadOnlyBuffer();
         }
         return rs;
     }