From 17c0722862f88c6e7e9e91eec3e85ea1832b597d Mon Sep 17 00:00:00 2001
From: Trustin Lee <t@motd.kr>
Date: Mon, 13 Jan 2014 23:29:41 +0900
Subject: [PATCH] Add missing validation which results in NPE later

---
 .../src/main/java/io/netty/bootstrap/ServerBootstrap.java      | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/transport/src/main/java/io/netty/bootstrap/ServerBootstrap.java b/transport/src/main/java/io/netty/bootstrap/ServerBootstrap.java
index 33e388a8c0..4dc95a4dff 100644
--- a/transport/src/main/java/io/netty/bootstrap/ServerBootstrap.java
+++ b/transport/src/main/java/io/netty/bootstrap/ServerBootstrap.java
@@ -241,6 +241,9 @@ public final class ServerBootstrap extends AbstractBootstrap<ServerBootstrap, Se
             logger.warn("childGroup is not set. Using parentGroup instead.");
             childGroup = group();
         }
+        if (channelFactory == null) {
+            throw new IllegalStateException("factory not set");
+        }
         return this;
     }