Re-enable Jetty in spring-websocket tests

spring-websocket/src/main/java/org/springframework/web/socket/adapter/jetty/JettyWebSocketSession.java

@@ -191,7 +191,13 @@ public class JettyWebSocketSession extends AbstractWebSocketSession<Session> {
 		this.extensions = getExtensions(session);
 
 		if (this.user == null) {
-			this.user = session.getUpgradeRequest().getUserPrincipal();
+			try {
+				this.user = session.getUpgradeRequest().getUserPrincipal();
+			}
+			catch (NullPointerException ex) {
+				// Necessary until https://github.com/eclipse/jetty.project/issues/10498 is resolved
+				logger.error("Failure from UpgradeRequest while getting Principal", ex);
+			}
 		}
 	}
 

spring-websocket/src/test/java/org/springframework/web/socket/AbstractWebSocketIntegrationTests.java

@@ -62,6 +62,7 @@ public abstract class AbstractWebSocketIntegrationTests {
 
 	static Stream<Arguments> argumentsFactory() {
 		return Stream.of(
+				arguments(named("Jetty", new JettyWebSocketTestServer()), named("Standard", new StandardWebSocketClient())),
 				arguments(named("Tomcat", new TomcatWebSocketTestServer()), named("Standard", new StandardWebSocketClient())),
 				arguments(named("Undertow", new UndertowTestServer()), named("Standard", new StandardWebSocketClient())));
 	}