Test websphere integration with spring framework websocket

dev/io.openliberty.springboot.fat30.websocket.app/build.gradle

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2017, 2023 IBM Corporation and others.
+ * Copyright (c) 2017, 2025 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
@@ -13,7 +13,7 @@
 
 // https://plugins.gradle.org/plugin/org.springframework.boot
 plugins {
-  id 'org.springframework.boot' version '3.0.7'
+  id 'org.springframework.boot' version '3.4.4'
 }
 apply from: '../wlp-gradle/subprojects/spring.gradle'
 def sv = springVersions[ '3.0' ]
@@ -28,5 +28,8 @@ sourceCompatibility = 17
 apply from: '../wlp-gradle/subprojects/maven-central-mirror.gradle'
 
 dependencies {
-  implementation('org.springframework.boot:spring-boot-starter-websocket' + ':' + sv['springBoot'])
+  implementation('org.springframework.boot:spring-boot-starter-websocket') {
+    exclude module: 'spring-boot-starter-tomcat' //Temporarily excluding tomcat starter till it is removed in SpringBootThinUtil
+  }
+  compileOnly('org.springframework.boot:spring-boot-starter-tomcat')
 }

dev/io.openliberty.springboot.fat30.websocket.app/src/main/java/com/ibm/ws/springboot/fat30/websocket/app/TestApplication.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2018,2023 IBM Corporation and others.
+ * Copyright (c) 2018,2025 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
@@ -18,13 +18,20 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.web.socket.config.annotation.EnableWebSocket;
 import org.springframework.web.socket.server.standard.ServerEndpointExporter;
+import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
+import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry;
+import org.springframework.web.socket.server.support.AbstractHandshakeHandler;
+import org.springframework.web.socket.server.support.DefaultHandshakeHandler;
+import org.springframework.web.socket.handler.TextWebSocketHandler;
+import org.springframework.web.socket.TextMessage;
+import org.springframework.web.socket.WebSocketSession;
 
 import com.ibm.ws.springboot.fat30.websocket.echo.ServerEchoWebSocketEndpoint;
 
 
 @SpringBootApplication
 @EnableWebSocket
-public class TestApplication{
+public class TestApplication implements WebSocketConfigurer {
 
 	public static void main(String[] args) {
 		SpringApplication.run(TestApplication.class, args);
@@ -40,4 +47,23 @@ public ServerEndpointExporter serverEndpointExporter() {
 		return new ServerEndpointExporter();
 	}
 
+	@Override
+    public void registerWebSocketHandlers(WebSocketHandlerRegistry registry) {
+        registry.addHandler(customWebSocketHandler(), "/customHandler").setHandshakeHandler(customHandshakeHandler());
+    }
+
+    @Bean
+    public TextWebSocketHandler customWebSocketHandler() {
+        return new TextWebSocketHandler() {
+            @Override
+            public void handleTextMessage(WebSocketSession session, TextMessage message) throws Exception {
+                session.sendMessage(new TextMessage("Did you say: " + message.getPayload()));
+            }
+        };
+    }
+
+    @Bean
+    public AbstractHandshakeHandler customHandshakeHandler() {
+        return new DefaultHandshakeHandler();
+    }	
 }

dev/io.openliberty.springboot.fat30_fat/fat/src/com/ibm/ws/springboot/support/fat/WebSocketTests30.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2018,2023 IBM Corporation and others.
+ * Copyright (c) 2018,2025 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
@@ -27,6 +27,7 @@
 import jakarta.websocket.Session;
 import jakarta.websocket.WebSocketContainer;
 
+import org.junit.AfterClass;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -86,6 +87,28 @@ public void testEchoWebSocket30() throws Exception {
         assertEquals("Expected message from server not found", "Did you say: Hello World", clientEndpoint.getMessageFromServer());
     }
 
+    /**
+     * Test websocket using a custom websocket configurer.
+     *
+     * The application registers a custom websocket handler and a abstract handshake handler.
+     * The org.springframework.web.socket.server.support.AbstractHandshakeHandler looksup websphere websocket code which is now being removed in spring framework 7.x.
+     * This test should fail for future Spring Boot versions using spring framework 7.x, we might have to use the websocket-2.2 feature and do some implementation changes if
+     * required.
+     *
+     * @throws Exception
+     */
+    @Test
+    public void testEchoWithCustomWebsocketHandler() throws Exception {
+        Log.info(getClass(), "testEchoWithCustomWebsocketHandler", wsContainer.toString());
+        Session session = wsContainer.connectToServer(clientEndpoint, new URI("ws://" + server.getHostname() + ":" + server.getHttpDefaultPort() + "/customHandler"));
+        assertNotNull("Session cannot be null", session);
+        assertTrue("Session is not open", session.isOpen());
+        CountDownLatch latch = new CountDownLatch(1);
+        clientEndpoint.sendMessage("Hello Websocket", latch);
+        assertTrue(latch.await(5, TimeUnit.SECONDS));
+        assertEquals("Expected message from server not found", "Did you say: Hello Websocket", clientEndpoint.getMessageFromServer());
+    }
+
     @Override
     public Set<String> getFeatures() {
         return new HashSet<>(Arrays.asList("springBoot-3.0", "servlet-6.0", "websocket-2.1"));
@@ -96,4 +119,11 @@ public String getApplication() {
         return SPRING_BOOT_30_APP_WEBSOCKET;
     }
 
+    @AfterClass
+    public static void stopTestServer() throws Exception {
+        //[WARNING ] SRVE8094W: WARNING: Cannot set header. Response already committed.  Stack trace of errant attempt to set header:
+        //at com.ibm.ws.webcontainer.srt.SRTServletResponse.setHeader(SRTServletResponse.java:1845)
+        server.stopServer(true, "SRVE8094W");
+    }
+
 }