Consistently extend WebSocketHandlerAdapterSupport

The WebSocketHandler adapters for all runtimes now extend
WebSocketHandlerAdapterSupport, which now also exposes
a shared DataBufferFactory property initialized from the response.

Issue: SPR-14527

spring-web-reactive/src/main/java/org/springframework/web/reactive/socket/adapter/JettyWebSocketHandlerAdapter.java

@@ -32,9 +32,8 @@ import org.reactivestreams.Subscriber;
 import org.reactivestreams.Subscription;
 
 import org.springframework.core.io.buffer.DataBuffer;
-import org.springframework.core.io.buffer.DataBufferFactory;
-import org.springframework.core.io.buffer.DefaultDataBufferFactory;
-import org.springframework.util.Assert;
+import org.springframework.http.server.reactive.ServerHttpRequest;
+import org.springframework.http.server.reactive.ServerHttpResponse;
 import org.springframework.web.reactive.socket.CloseStatus;
 import org.springframework.web.reactive.socket.WebSocketHandler;
 import org.springframework.web.reactive.socket.WebSocketMessage;
@@ -48,21 +47,17 @@ import org.springframework.web.reactive.socket.WebSocketMessage.Type;
  * @since 5.0
  */
 @WebSocket
-public class JettyWebSocketHandlerAdapter {
+public class JettyWebSocketHandlerAdapter extends WebSocketHandlerAdapterSupport {
 
 	private static final ByteBuffer EMPTY_PAYLOAD = ByteBuffer.wrap(new byte[0]);
 
-
-	private final WebSocketHandler delegate;
-
 	private JettyWebSocketSession session;
 
-	private final DataBufferFactory bufferFactory = new DefaultDataBufferFactory(false);
 
+	public JettyWebSocketHandlerAdapter(ServerHttpRequest request, ServerHttpResponse response,
+			WebSocketHandler delegate) {
 
-	public JettyWebSocketHandlerAdapter(WebSocketHandler delegate) {
-		Assert.notNull("WebSocketHandler is required");
-		this.delegate = delegate;
+		super(request, response, delegate);
 	}
 
 
@@ -71,7 +66,7 @@ public class JettyWebSocketHandlerAdapter {
 		this.session = new JettyWebSocketSession(session);
 
 		HandlerResultSubscriber subscriber = new HandlerResultSubscriber();
-		this.delegate.handle(this.session).subscribe(subscriber);
+		getDelegate().handle(this.session).subscribe(subscriber);
 	}
 
 	@OnWebSocketMessage
@@ -105,15 +100,15 @@ public class JettyWebSocketHandlerAdapter {
 	private <T> WebSocketMessage toMessage(Type type, T message) {
 		if (Type.TEXT.equals(type)) {
 			byte[] bytes = ((String) message).getBytes(StandardCharsets.UTF_8);
-			DataBuffer buffer = this.bufferFactory.wrap(bytes);
+			DataBuffer buffer = getBufferFactory().wrap(bytes);
 			return WebSocketMessage.create(Type.TEXT, buffer);
 		}
 		else if (Type.BINARY.equals(type)) {
-			DataBuffer buffer = this.bufferFactory.wrap((ByteBuffer) message);
+			DataBuffer buffer = getBufferFactory().wrap((ByteBuffer) message);
 			return WebSocketMessage.create(Type.BINARY, buffer);
 		}
 		else if (Type.PONG.equals(type)) {
-			DataBuffer buffer = this.bufferFactory.wrap((ByteBuffer) message);
+			DataBuffer buffer = getBufferFactory().wrap((ByteBuffer) message);
 			return WebSocketMessage.create(Type.PONG, buffer);
 		}
 		else {

spring-web-reactive/src/main/java/org/springframework/web/reactive/socket/adapter/ReactorNettyWebSocketHandlerAdapter.java

@@ -21,10 +21,8 @@ import org.reactivestreams.Publisher;
 import reactor.ipc.netty.http.HttpInbound;
 import reactor.ipc.netty.http.HttpOutbound;
 
-import org.springframework.core.io.buffer.NettyDataBufferFactory;
 import org.springframework.http.server.reactive.ServerHttpRequest;
 import org.springframework.http.server.reactive.ServerHttpResponse;
-import org.springframework.util.Assert;
 import org.springframework.web.reactive.socket.WebSocketHandler;
 
 /**
@@ -38,22 +36,13 @@ public class ReactorNettyWebSocketHandlerAdapter extends WebSocketHandlerAdapter
 		implements BiFunction<HttpInbound, HttpOutbound, Publisher<Void>> {
 
 
-	private final NettyDataBufferFactory bufferFactory;
-
-
 	public ReactorNettyWebSocketHandlerAdapter(ServerHttpRequest request, ServerHttpResponse response,
 			WebSocketHandler handler) {
 
-		super(request, handler);
-		Assert.notNull("'response' is required");
-		this.bufferFactory = (NettyDataBufferFactory) response.bufferFactory();
+		super(request, response, handler);
 	}
 
 
-	public NettyDataBufferFactory getBufferFactory() {
-		return this.bufferFactory;
-	}
-
 	@Override
 	public Publisher<Void> apply(HttpInbound inbound, HttpOutbound outbound) {
 		ReactorNettyWebSocketSession session =

spring-web-reactive/src/main/java/org/springframework/web/reactive/socket/adapter/RxNettyWebSocketHandlerAdapter.java

@@ -20,10 +20,8 @@ import reactor.core.publisher.Mono;
 import rx.Observable;
 import rx.RxReactiveStreams;
 
-import org.springframework.core.io.buffer.NettyDataBufferFactory;
 import org.springframework.http.server.reactive.ServerHttpRequest;
 import org.springframework.http.server.reactive.ServerHttpResponse;
-import org.springframework.util.Assert;
 import org.springframework.web.reactive.socket.WebSocketHandler;
 
 /**
@@ -36,22 +34,14 @@ import org.springframework.web.reactive.socket.WebSocketHandler;
 public class RxNettyWebSocketHandlerAdapter extends WebSocketHandlerAdapterSupport
 		implements io.reactivex.netty.protocol.http.ws.server.WebSocketHandler {
 
-	private final NettyDataBufferFactory bufferFactory;
-
 
 	public RxNettyWebSocketHandlerAdapter(ServerHttpRequest request, ServerHttpResponse response,
 			WebSocketHandler handler) {
 
-		super(request, handler);
-		Assert.notNull("'response' is required");
-		this.bufferFactory = (NettyDataBufferFactory) response.bufferFactory();
+		super(request, response, handler);
 	}
 
 
-	public NettyDataBufferFactory getBufferFactory() {
-		return this.bufferFactory;
-	}
-
 	@Override
 	public Observable<Void> handle(WebSocketConnection conn) {
 		RxNettyWebSocketSession session = new RxNettyWebSocketSession(conn, getUri(), getBufferFactory());

spring-web-reactive/src/main/java/org/springframework/web/reactive/socket/adapter/TomcatWebSocketHandlerAdapter.java

@@ -28,9 +28,8 @@ import org.reactivestreams.Subscriber;
 import org.reactivestreams.Subscription;
 
 import org.springframework.core.io.buffer.DataBuffer;
-import org.springframework.core.io.buffer.DataBufferFactory;
-import org.springframework.core.io.buffer.DefaultDataBufferFactory;
-import org.springframework.util.Assert;
+import org.springframework.http.server.reactive.ServerHttpRequest;
+import org.springframework.http.server.reactive.ServerHttpResponse;
 import org.springframework.web.reactive.socket.CloseStatus;
 import org.springframework.web.reactive.socket.WebSocketHandler;
 import org.springframework.web.reactive.socket.WebSocketMessage;
@@ -43,76 +42,84 @@ import org.springframework.web.reactive.socket.WebSocketMessage.Type;
  * @author Violeta Georgieva
  * @since 5.0
  */
-public class TomcatWebSocketHandlerAdapter extends Endpoint {
-
-	private final WebSocketHandler delegate;
+public class TomcatWebSocketHandlerAdapter extends WebSocketHandlerAdapterSupport {
 
 	private TomcatWebSocketSession session;
 
-	private final DataBufferFactory bufferFactory = new DefaultDataBufferFactory(false);
 
+	public TomcatWebSocketHandlerAdapter(ServerHttpRequest request, ServerHttpResponse response,
+			WebSocketHandler delegate) {
 
-	public TomcatWebSocketHandlerAdapter(WebSocketHandler delegate) {
-		Assert.notNull("WebSocketHandler is required");
-		this.delegate = delegate;
+		super(request, response, delegate);
 	}
 
 
-	@Override
-	public void onOpen(Session session, EndpointConfig config) {
-		this.session = new TomcatWebSocketSession(session);
-
-		session.addMessageHandler(String.class, message -> {
-			WebSocketMessage webSocketMessage = toMessage(message);
-			this.session.handleMessage(webSocketMessage.getType(), webSocketMessage);
-		});
-		session.addMessageHandler(ByteBuffer.class, message -> {
-			WebSocketMessage webSocketMessage = toMessage(message);
-			this.session.handleMessage(webSocketMessage.getType(), webSocketMessage);
-		});
-		session.addMessageHandler(PongMessage.class, message -> {
-			WebSocketMessage webSocketMessage = toMessage(message);
-			this.session.handleMessage(webSocketMessage.getType(), webSocketMessage);
-		});
-
-		HandlerResultSubscriber resultSubscriber = new HandlerResultSubscriber();
-		this.delegate.handle(this.session).subscribe(resultSubscriber);
+	public Endpoint getEndpoint() {
+		return new StandardEndpoint();
 	}
 
-	private <T> WebSocketMessage toMessage(T message) {
-		if (message instanceof String) {
-			byte[] bytes = ((String) message).getBytes(StandardCharsets.UTF_8);
-			return WebSocketMessage.create(Type.TEXT, this.bufferFactory.wrap(bytes));
-		}
-		else if (message instanceof ByteBuffer) {
-			DataBuffer buffer = this.bufferFactory.wrap((ByteBuffer) message);
-			return WebSocketMessage.create(Type.BINARY, buffer);
-		}
-		else if (message instanceof PongMessage) {
-			DataBuffer buffer = this.bufferFactory.wrap(((PongMessage) message).getApplicationData());
-			return WebSocketMessage.create(Type.PONG, buffer);
+	private TomcatWebSocketSession getSession() {
+		return this.session;
+	}
+
+
+	private class StandardEndpoint extends Endpoint {
+
+		@Override
+		public void onOpen(Session session, EndpointConfig config) {
+			TomcatWebSocketHandlerAdapter.this.session = new TomcatWebSocketSession(session);
+
+			session.addMessageHandler(String.class, message -> {
+				WebSocketMessage webSocketMessage = toMessage(message);
+				getSession().handleMessage(webSocketMessage.getType(), webSocketMessage);
+			});
+			session.addMessageHandler(ByteBuffer.class, message -> {
+				WebSocketMessage webSocketMessage = toMessage(message);
+				getSession().handleMessage(webSocketMessage.getType(), webSocketMessage);
+			});
+			session.addMessageHandler(PongMessage.class, message -> {
+				WebSocketMessage webSocketMessage = toMessage(message);
+				getSession().handleMessage(webSocketMessage.getType(), webSocketMessage);
+			});
+
+			HandlerResultSubscriber resultSubscriber = new HandlerResultSubscriber();
+			getDelegate().handle(TomcatWebSocketHandlerAdapter.this.session).subscribe(resultSubscriber);
 		}
-		else {
-			throw new IllegalArgumentException("Unexpected message type: " + message);
+
+		private <T> WebSocketMessage toMessage(T message) {
+			if (message instanceof String) {
+				byte[] bytes = ((String) message).getBytes(StandardCharsets.UTF_8);
+				return WebSocketMessage.create(Type.TEXT, getBufferFactory().wrap(bytes));
+			}
+			else if (message instanceof ByteBuffer) {
+				DataBuffer buffer = getBufferFactory().wrap((ByteBuffer) message);
+				return WebSocketMessage.create(Type.BINARY, buffer);
+			}
+			else if (message instanceof PongMessage) {
+				DataBuffer buffer = getBufferFactory().wrap(((PongMessage) message).getApplicationData());
+				return WebSocketMessage.create(Type.PONG, buffer);
+			}
+			else {
+				throw new IllegalArgumentException("Unexpected message type: " + message);
+			}
 		}
-	}
 
-	@Override
-	public void onClose(Session session, CloseReason reason) {
-		if (this.session != null) {
-			int code = reason.getCloseCode().getCode();
-			this.session.handleClose(new CloseStatus(code, reason.getReasonPhrase()));
+		@Override
+		public void onClose(Session session, CloseReason reason) {
+			if (getSession() != null) {
+				int code = reason.getCloseCode().getCode();
+				getSession().handleClose(new CloseStatus(code, reason.getReasonPhrase()));
+			}
 		}
-	}
 
-	@Override
-	public void onError(Session session, Throwable exception) {
-		if (this.session != null) {
-			this.session.handleError(exception);
+		@Override
+		public void onError(Session session, Throwable exception) {
+			if (getSession() != null) {
+				getSession().handleError(exception);
+			}
 		}
 	}
 
-
 	private final class HandlerResultSubscriber implements Subscriber<Void> {
 
 		@Override
@@ -127,15 +134,15 @@ public class TomcatWebSocketHandlerAdapter extends Endpoint {
 
 		@Override
 		public void onError(Throwable ex) {
-			if (session != null) {
-				session.close(new CloseStatus(CloseStatus.SERVER_ERROR.getCode(), ex.getMessage()));
+			if (getSession() != null) {
+				getSession().close(new CloseStatus(CloseStatus.SERVER_ERROR.getCode(), ex.getMessage()));
 			}
 		}
 
 		@Override
 		public void onComplete() {
-			if (session != null) {
-				session.close();
+			if (getSession() != null) {
+				getSession().close();
 			}
 		}
 	}

spring-web-reactive/src/main/java/org/springframework/web/reactive/socket/adapter/UndertowWebSocketHandlerAdapter.java

@@ -16,30 +16,27 @@
 
 package org.springframework.web.reactive.socket.adapter;
 
-import java.net.URISyntaxException;
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 
+import io.undertow.websockets.WebSocketConnectionCallback;
+import io.undertow.websockets.core.AbstractReceiveListener;
+import io.undertow.websockets.core.BufferedBinaryMessage;
+import io.undertow.websockets.core.BufferedTextMessage;
+import io.undertow.websockets.core.CloseMessage;
+import io.undertow.websockets.core.WebSocketChannel;
+import io.undertow.websockets.spi.WebSocketHttpExchange;
 import org.reactivestreams.Subscriber;
 import org.reactivestreams.Subscription;
 
 import org.springframework.core.io.buffer.DataBuffer;
-import org.springframework.core.io.buffer.DataBufferFactory;
-import org.springframework.core.io.buffer.DefaultDataBufferFactory;
-import org.springframework.util.Assert;
+import org.springframework.http.server.reactive.ServerHttpRequest;
+import org.springframework.http.server.reactive.ServerHttpResponse;
 import org.springframework.web.reactive.socket.CloseStatus;
 import org.springframework.web.reactive.socket.WebSocketHandler;
 import org.springframework.web.reactive.socket.WebSocketMessage;
 import org.springframework.web.reactive.socket.WebSocketMessage.Type;
 
-import io.undertow.websockets.WebSocketConnectionCallback;
-import io.undertow.websockets.core.AbstractReceiveListener;
-import io.undertow.websockets.core.BufferedBinaryMessage;
-import io.undertow.websockets.core.BufferedTextMessage;
-import io.undertow.websockets.core.CloseMessage;
-import io.undertow.websockets.core.WebSocketChannel;
-import io.undertow.websockets.spi.WebSocketHttpExchange;
-
 /**
  * Undertow {@code WebSocketHandler} implementation adapting and
  * delegating to a Spring {@link WebSocketHandler}.
@@ -47,36 +44,27 @@ import io.undertow.websockets.spi.WebSocketHttpExchange;
  * @author Violeta Georgieva
  * @since 5.0
  */
-public class UndertowWebSocketHandlerAdapter implements WebSocketConnectionCallback {
-
-	private final WebSocketHandler delegate;
+public class UndertowWebSocketHandlerAdapter extends WebSocketHandlerAdapterSupport
+		implements WebSocketConnectionCallback {
 
 	private UndertowWebSocketSession session;
 
-	private final DataBufferFactory bufferFactory = new DefaultDataBufferFactory(false);
 
+	public UndertowWebSocketHandlerAdapter(ServerHttpRequest request, ServerHttpResponse response,
+			WebSocketHandler delegate) {
 
-	public UndertowWebSocketHandlerAdapter(WebSocketHandler delegate) {
-		Assert.notNull("WebSocketHandler is required");
-		this.delegate = delegate;
+		super(request, response, delegate);
 	}
 
 
 	@Override
 	public void onConnect(WebSocketHttpExchange exchange, WebSocketChannel channel) {
-		try {
-			this.session = new UndertowWebSocketSession(channel);
-		}
-		catch (URISyntaxException e) {
-			// TODO Auto-generated catch block
-			e.printStackTrace();
-		}
-
+		this.session = new UndertowWebSocketSession(channel, getUri());
 		channel.getReceiveSetter().set(new UndertowReceiveListener());
 		channel.resumeReceives();
 
 		HandlerResultSubscriber resultSubscriber = new HandlerResultSubscriber();
-		this.delegate.handle(this.session).subscribe(resultSubscriber);
+		getDelegate().handle(this.session).subscribe(resultSubscriber);
 	}
 
 
@@ -114,14 +102,14 @@ public class UndertowWebSocketHandlerAdapter implements WebSocketConnectionCallb
 		private <T> WebSocketMessage toMessage(Type type, T message) {
 			if (Type.TEXT.equals(type)) {
 				byte[] bytes = ((String) message).getBytes(StandardCharsets.UTF_8);
-				return WebSocketMessage.create(Type.TEXT, bufferFactory.wrap(bytes));
+				return WebSocketMessage.create(Type.TEXT, getBufferFactory().wrap(bytes));
 			}
 			else if (Type.BINARY.equals(type)) {
-				DataBuffer buffer = bufferFactory.allocateBuffer().write((ByteBuffer[]) message);
+				DataBuffer buffer = getBufferFactory().allocateBuffer().write((ByteBuffer[]) message);
 				return WebSocketMessage.create(Type.BINARY, buffer);
 			}
 			else if (Type.PONG.equals(type)) {
-				DataBuffer buffer = bufferFactory.allocateBuffer().write((ByteBuffer[]) message);
+				DataBuffer buffer = getBufferFactory().allocateBuffer().write((ByteBuffer[]) message);
 				return WebSocketMessage.create(Type.PONG, buffer);
 			}
 			else {

spring-web-reactive/src/main/java/org/springframework/web/reactive/socket/adapter/UndertowWebSocketSession.java

@@ -18,7 +18,6 @@ package org.springframework.web.reactive.socket.adapter;
 
 import java.io.IOException;
 import java.net.URI;
-import java.net.URISyntaxException;
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 
@@ -43,8 +42,8 @@ import org.springframework.web.reactive.socket.WebSocketSession;
 public class UndertowWebSocketSession extends AbstractListenerWebSocketSession<WebSocketChannel> {
 
 
-	public UndertowWebSocketSession(WebSocketChannel channel) throws URISyntaxException {
-		super(channel, ObjectUtils.getIdentityHexString(channel), new URI(channel.getUrl()));
+	public UndertowWebSocketSession(WebSocketChannel channel, URI url) {
+		super(channel, ObjectUtils.getIdentityHexString(channel), url);
 	}
 
 

spring-web-reactive/src/main/java/org/springframework/web/reactive/socket/adapter/WebSocketHandlerAdapterSupport.java

@@ -17,12 +17,15 @@ package org.springframework.web.reactive.socket.adapter;
 
 import java.net.URI;
 
+import org.springframework.core.io.buffer.DataBufferFactory;
 import org.springframework.http.server.reactive.ServerHttpRequest;
+import org.springframework.http.server.reactive.ServerHttpResponse;
 import org.springframework.util.Assert;
 import org.springframework.web.reactive.socket.WebSocketHandler;
 
 /**
- * Base class for {@link WebSocketHandler} implementations.
+ * Base class for {@link WebSocketHandler} adapters to underlying WebSocket
+ * handler APIs.
  *
  * @author Rossen Stoyanchev
  * @since 5.0
@@ -33,21 +36,32 @@ public abstract class WebSocketHandlerAdapterSupport {
 
 	private final WebSocketHandler delegate;
 
+	private final DataBufferFactory bufferFactory;
 
-	protected WebSocketHandlerAdapterSupport(ServerHttpRequest request, WebSocketHandler handler) {
-		Assert.notNull("'request' is required");
-		Assert.notNull("'handler' handler is required");
+
+	protected WebSocketHandlerAdapterSupport(ServerHttpRequest request, ServerHttpResponse response,
+			WebSocketHandler handler) {
+
+		Assert.notNull("ServerHttpRequest is required");
+		Assert.notNull("ServerHttpResponse is required");
+		Assert.notNull("WebSocketHandler handler is required");
 		this.uri = request.getURI();
+		this.bufferFactory = response.bufferFactory();
 		this.delegate = handler;
 	}
 
 
-	public URI getUri() {
+	protected URI getUri() {
 		return this.uri;
 	}
 
-	public WebSocketHandler getDelegate() {
+	protected WebSocketHandler getDelegate() {
 		return this.delegate;
 	}
 
+	@SuppressWarnings("unchecked")
+	protected <T extends DataBufferFactory> T getBufferFactory() {
+		return (T) this.bufferFactory;
+	}
+
 }

spring-web-reactive/src/main/java/org/springframework/web/reactive/socket/server/upgrade/JettyRequestUpgradeStrategy.java

@@ -17,16 +17,14 @@
 package org.springframework.web.reactive.socket.server.upgrade;
 
 import java.io.IOException;
-
 import javax.servlet.ServletContext;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
 import org.eclipse.jetty.util.DecoratedObjectFactory;
 import org.eclipse.jetty.websocket.server.WebSocketServerFactory;
-import org.eclipse.jetty.websocket.servlet.ServletUpgradeRequest;
-import org.eclipse.jetty.websocket.servlet.ServletUpgradeResponse;
-import org.eclipse.jetty.websocket.servlet.WebSocketCreator;
+import reactor.core.publisher.Mono;
+
 import org.springframework.context.Lifecycle;
 import org.springframework.core.NamedThreadLocal;
 import org.springframework.http.server.reactive.ServerHttpRequest;
@@ -39,8 +37,6 @@ import org.springframework.web.reactive.socket.adapter.JettyWebSocketHandlerAdap
 import org.springframework.web.reactive.socket.server.RequestUpgradeStrategy;
 import org.springframework.web.server.ServerWebExchange;
 
-import reactor.core.publisher.Mono;
-
 /**
  * A {@link RequestUpgradeStrategy} for use with Jetty.
  * 
@@ -52,43 +48,13 @@ public class JettyRequestUpgradeStrategy implements RequestUpgradeStrategy, Life
 	private static final ThreadLocal<JettyWebSocketHandlerAdapter> wsContainerHolder =
 			new NamedThreadLocal<>("Jetty WebSocketHandler Adapter");
 
+
 	private WebSocketServerFactory factory;
 
 	private ServletContext servletContext;
 
 	private volatile boolean running = false;
 
-	@Override
-	public Mono<Void> upgrade(ServerWebExchange exchange, WebSocketHandler webSocketHandler) {
-
-		JettyWebSocketHandlerAdapter adapter =
-				new JettyWebSocketHandlerAdapter(webSocketHandler);
-
-		HttpServletRequest servletRequest = getHttpServletRequest(exchange.getRequest());
-		HttpServletResponse servletResponse = getHttpServletResponse(exchange.getResponse());
-
-		if (this.servletContext == null) {
-			this.servletContext = servletRequest.getServletContext();
-			servletContext.setAttribute(DecoratedObjectFactory.ATTR, new DecoratedObjectFactory());
-		}
-
-		try {
-			start();
-
-			Assert.isTrue(this.factory.isUpgradeRequest(servletRequest, servletResponse), "Not a WebSocket handshake");
-
-			wsContainerHolder.set(adapter);
-			this.factory.acceptWebSocket(servletRequest, servletResponse);
-		}
-		catch (IOException ex) {
-			return Mono.error(ex);
-		}
-		finally {
-			wsContainerHolder.remove();
-		}
-
-		return Mono.empty();
-	}
 
 	@Override
 	public void start() {
@@ -96,16 +62,10 @@ public class JettyRequestUpgradeStrategy implements RequestUpgradeStrategy, Life
 			this.running = true;
 			try {
 				this.factory = new WebSocketServerFactory(this.servletContext);
-				this.factory.setCreator(new WebSocketCreator() {
-
-					@Override
-					public Object createWebSocket(ServletUpgradeRequest req,
-							ServletUpgradeResponse resp) {
-						JettyWebSocketHandlerAdapter adapter = wsContainerHolder.get();
-						Assert.state(adapter != null, "Expected JettyWebSocketHandlerAdapter");
-						return adapter;
-					}
-
+				this.factory.setCreator((request, response) -> {
+					JettyWebSocketHandlerAdapter adapter = wsContainerHolder.get();
+					Assert.state(adapter != null, "Expected JettyWebSocketHandlerAdapter");
+					return adapter;
 				});
 				this.factory.start();
 			}
@@ -133,12 +93,46 @@ public class JettyRequestUpgradeStrategy implements RequestUpgradeStrategy, Life
 		return this.running;
 	}
 
-	private final HttpServletRequest getHttpServletRequest(ServerHttpRequest request) {
+	@Override
+	public Mono<Void> upgrade(ServerWebExchange exchange, WebSocketHandler handler) {
+
+		ServerHttpRequest request = exchange.getRequest();
+		ServerHttpResponse response = exchange.getResponse();
+		JettyWebSocketHandlerAdapter adapter = new JettyWebSocketHandlerAdapter(request, response, handler);
+
+		HttpServletRequest servletRequest = getHttpServletRequest(request);
+		HttpServletResponse servletResponse = getHttpServletResponse(response);
+
+		if (this.servletContext == null) {
+			this.servletContext = servletRequest.getServletContext();
+			this.servletContext.setAttribute(DecoratedObjectFactory.ATTR, new DecoratedObjectFactory());
+		}
+
+		try {
+			start();
+
+			Assert.isTrue(this.factory.isUpgradeRequest(
+					servletRequest, servletResponse), "Not a WebSocket handshake");
+
+			wsContainerHolder.set(adapter);
+			this.factory.acceptWebSocket(servletRequest, servletResponse);
+		}
+		catch (IOException ex) {
+			return Mono.error(ex);
+		}
+		finally {
+			wsContainerHolder.remove();
+		}
+
+		return Mono.empty();
+	}
+
+	private HttpServletRequest getHttpServletRequest(ServerHttpRequest request) {
 		Assert.isTrue(request instanceof ServletServerHttpRequest);
 		return ((ServletServerHttpRequest) request).getServletRequest();
 	}
 
-	private final HttpServletResponse getHttpServletResponse(ServerHttpResponse response) {
+	private HttpServletResponse getHttpServletResponse(ServerHttpResponse response) {
 		Assert.isTrue(response instanceof ServletServerHttpResponse);
 		return ((ServletServerHttpResponse) response).getServletResponse();
 	}

spring-web-reactive/src/main/java/org/springframework/web/reactive/socket/server/upgrade/TomcatRequestUpgradeStrategy.java

@@ -24,6 +24,8 @@ import javax.servlet.ServletContext;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
+import javax.websocket.Endpoint;
+import javax.websocket.server.ServerEndpointConfig;
 
 import org.apache.tomcat.websocket.server.WsServerContainer;
 import org.springframework.http.server.reactive.ServerHttpRequest;
@@ -50,45 +52,46 @@ public class TomcatRequestUpgradeStrategy implements RequestUpgradeStrategy {
 
 
 	@Override
-	public Mono<Void> upgrade(ServerWebExchange exchange, WebSocketHandler webSocketHandler){
+	public Mono<Void> upgrade(ServerWebExchange exchange, WebSocketHandler handler){
 
-		TomcatWebSocketHandlerAdapter endpoint =
-				new TomcatWebSocketHandlerAdapter(webSocketHandler);
+		ServerHttpRequest request = exchange.getRequest();
+		ServerHttpResponse response = exchange.getResponse();
+		Endpoint endpoint = new TomcatWebSocketHandlerAdapter(request, response, handler).getEndpoint();
 
-		HttpServletRequest servletRequest = getHttpServletRequest(exchange.getRequest());
-		HttpServletResponse servletResponse = getHttpServletResponse(exchange.getResponse());
+		HttpServletRequest servletRequest = getHttpServletRequest(request);
+		HttpServletResponse servletResponse = getHttpServletResponse(response);
 
-		Map<String, String> pathParams = Collections.<String, String> emptyMap();
-
-		ServerEndpointRegistration sec =
-				new ServerEndpointRegistration(servletRequest.getRequestURI(), endpoint);
+		String requestURI = servletRequest.getRequestURI();
+		ServerEndpointConfig config = new ServerEndpointRegistration(requestURI, endpoint);
 		try {
-			getContainer(servletRequest).doUpgrade(servletRequest, servletResponse,
-					sec, pathParams);
+			WsServerContainer container = getContainer(servletRequest);
+			container.doUpgrade(servletRequest, servletResponse, config, Collections.emptyMap());
 		}
-		catch (ServletException | IOException e) {
-			return Mono.error(e);
+		catch (ServletException | IOException ex) {
+			return Mono.error(ex);
 		}
 
 		return Mono.empty();
 	}
 
-	private WsServerContainer getContainer(HttpServletRequest request) {
-		ServletContext servletContext = request.getServletContext();
-		Object container = servletContext.getAttribute(SERVER_CONTAINER_ATTR);
-		Assert.notNull(container, "No '" + SERVER_CONTAINER_ATTR + "' ServletContext attribute. " +
-				"Are you running in a Servlet container that supports JSR-356?");
-		Assert.isTrue(container instanceof WsServerContainer);
-		return (WsServerContainer) container;
-	}
-
-	private final HttpServletRequest getHttpServletRequest(ServerHttpRequest request) {
+	private HttpServletRequest getHttpServletRequest(ServerHttpRequest request) {
 		Assert.isTrue(request instanceof ServletServerHttpRequest);
 		return ((ServletServerHttpRequest) request).getServletRequest();
 	}
 
-	private final HttpServletResponse getHttpServletResponse(ServerHttpResponse response) {
+	private HttpServletResponse getHttpServletResponse(ServerHttpResponse response) {
 		Assert.isTrue(response instanceof ServletServerHttpResponse);
 		return ((ServletServerHttpResponse) response).getServletResponse();
 	}
+
+	private WsServerContainer getContainer(HttpServletRequest request) {
+		ServletContext servletContext = request.getServletContext();
+		Object container = servletContext.getAttribute(SERVER_CONTAINER_ATTR);
+		Assert.notNull(container,
+				"No 'javax.websocket.server.ServerContainer' ServletContext attribute. " +
+						"Are you running in a Servlet container that supports JSR-356?");
+		Assert.isTrue(container instanceof WsServerContainer);
+		return (WsServerContainer) container;
+	}
+
 }

spring-web-reactive/src/main/java/org/springframework/web/reactive/socket/server/upgrade/UndertowRequestUpgradeStrategy.java

@@ -17,6 +17,7 @@
 package org.springframework.web.reactive.socket.server.upgrade;
 
 import org.springframework.http.server.reactive.ServerHttpRequest;
+import org.springframework.http.server.reactive.ServerHttpResponse;
 import org.springframework.http.server.reactive.UndertowServerHttpRequest;
 import org.springframework.util.Assert;
 import org.springframework.web.reactive.socket.WebSocketHandler;
@@ -25,6 +26,7 @@ import org.springframework.web.reactive.socket.server.RequestUpgradeStrategy;
 import org.springframework.web.server.ServerWebExchange;
 
 import io.undertow.server.HttpServerExchange;
+import io.undertow.websockets.WebSocketConnectionCallback;
 import io.undertow.websockets.WebSocketProtocolHandshakeHandler;
 import reactor.core.publisher.Mono;
 
@@ -37,27 +39,23 @@ import reactor.core.publisher.Mono;
 public class UndertowRequestUpgradeStrategy implements RequestUpgradeStrategy {
 
 	@Override
-	public Mono<Void> upgrade(ServerWebExchange exchange,
-			WebSocketHandler webSocketHandler) {
+	public Mono<Void> upgrade(ServerWebExchange exchange, WebSocketHandler handler) {
 
-		UndertowWebSocketHandlerAdapter callback =
-				new UndertowWebSocketHandlerAdapter(webSocketHandler);
+		ServerHttpRequest request = exchange.getRequest();
+		ServerHttpResponse response = exchange.getResponse();
+		WebSocketConnectionCallback callback = new UndertowWebSocketHandlerAdapter(request, response, handler);
+
+		Assert.isTrue(request instanceof UndertowServerHttpRequest);
+		HttpServerExchange httpExchange = ((UndertowServerHttpRequest) request).getUndertowExchange();
 
-		WebSocketProtocolHandshakeHandler handler =
-				new WebSocketProtocolHandshakeHandler(callback);
 		try {
-			handler.handleRequest(getUndertowExchange(exchange.getRequest()));
+			new WebSocketProtocolHandshakeHandler(callback).handleRequest(httpExchange);
 		}
-		catch (Exception e) {
-			return Mono.error(e);
+		catch (Exception ex) {
+			return Mono.error(ex);
 		}
 
 		return Mono.empty();
 	}
 
-	private final HttpServerExchange getUndertowExchange(ServerHttpRequest request) {
-		Assert.isTrue(request instanceof UndertowServerHttpRequest);
-		return ((UndertowServerHttpRequest) request).getUndertowExchange();
-	}
-
 }