From 467c770b4de997b00508f1d8423615a251464e74 Mon Sep 17 00:00:00 2001
From: Michael Irwin <mikesir87@gmail.com>
Date: Mon, 4 Nov 2013 14:47:22 -0500
Subject: [PATCH] Handle UnsupportedOperationException from
 getInstalledExtensions in Glassfish 4.0

---
 .../support/GlassFish40RequestUpgradeStrategy.java  | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/spring-websocket/src/main/java/org/springframework/web/socket/server/support/GlassFish40RequestUpgradeStrategy.java b/spring-websocket/src/main/java/org/springframework/web/socket/server/support/GlassFish40RequestUpgradeStrategy.java
index ed2508e538..5afe02f47c 100644
--- a/spring-websocket/src/main/java/org/springframework/web/socket/server/support/GlassFish40RequestUpgradeStrategy.java
+++ b/spring-websocket/src/main/java/org/springframework/web/socket/server/support/GlassFish40RequestUpgradeStrategy.java
@@ -17,11 +17,16 @@
 package org.springframework.web.socket.server.support;
 
 import java.lang.reflect.Constructor;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.websocket.WebSocketContainer;
 
 import org.glassfish.tyrus.core.EndpointWrapper;
 import org.glassfish.tyrus.spi.SPIEndpoint;
 import org.glassfish.tyrus.websockets.WebSocketApplication;
 import org.springframework.util.ClassUtils;
+import org.springframework.web.socket.support.WebSocketExtension;
 
 
 /**
@@ -34,6 +39,14 @@ import org.springframework.util.ClassUtils;
  */
 public class GlassFish40RequestUpgradeStrategy extends AbstractGlassFishRequestUpgradeStrategy {
 
+	protected List<WebSocketExtension> getInstalledExtensions(WebSocketContainer container) {
+		try {
+			return super.getInstalledExtensions(container);
+		}
+		catch (UnsupportedOperationException e) {
+			return new ArrayList<WebSocketExtension>();
+		}
+	}
 
 	protected WebSocketApplication createTyrusEndpoint(EndpointWrapper endpoint) {
 		try {