From 5eaaf5a73a66587f2959a8328a0f2a4942aa7d93 Mon Sep 17 00:00:00 2001
From: Joel Koh <joelkoh@ig-interactive.com>
Date: Thu, 3 May 2018 17:24:23 +0800
Subject: [PATCH] fixed disconnect null pointer

---
 .../java/com/corundumstudio/socketio/handler/ClientHead.java  | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/corundumstudio/socketio/handler/ClientHead.java b/src/main/java/com/corundumstudio/socketio/handler/ClientHead.java
index 662624b..0612a59 100644
--- a/src/main/java/com/corundumstudio/socketio/handler/ClientHead.java
+++ b/src/main/java/com/corundumstudio/socketio/handler/ClientHead.java
@@ -205,7 +205,9 @@ public class ClientHead {
 
     public void disconnect() {
         ChannelFuture future = send(new Packet(PacketType.DISCONNECT));
-        future.addListener(ChannelFutureListener.CLOSE);
+		if(future != null) {
+			future.addListener(ChannelFutureListener.CLOSE);
+		}
 
         onChannelDisconnect();
     }