WebSocket enhancements for 3.x
This commit is contained in:
Daniel Bevenius
parent
051b062530
commit
21b9dd00cd
@ -0,0 +1,114 @@
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/*
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* Copyright 2012 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package org.jboss.netty.handler.codec.http.websocketx;
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import static org.jboss.netty.handler.codec.http.HttpVersion.HTTP_1_1;
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import org.jboss.netty.buffer.ChannelBuffers;
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import org.jboss.netty.channel.ChannelFutureListener;
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import org.jboss.netty.channel.ChannelHandler;
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import org.jboss.netty.channel.ChannelHandlerContext;
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import org.jboss.netty.channel.ChannelPipeline;
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import org.jboss.netty.channel.ChannelStateEvent;
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import org.jboss.netty.channel.ExceptionEvent;
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import org.jboss.netty.channel.MessageEvent;
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import org.jboss.netty.channel.SimpleChannelHandler;
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import org.jboss.netty.handler.codec.http.DefaultHttpResponse;
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import org.jboss.netty.handler.codec.http.HttpResponseStatus;
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/**
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* Handles WebSocket control frames (Close, Ping, Pong) and data frames (Text and Binary) are passed
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* to the next handler in the pipeline.
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*/
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public class WebSocketServerProtocolHandler extends SimpleChannelHandler {
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private final String websocketPath;
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private final String subprotocols;
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private final boolean allowExtensions;
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public WebSocketServerProtocolHandler(String websocketPath) {
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this(websocketPath, null, false);
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}
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public WebSocketServerProtocolHandler(String websocketPath, String subprotocols) {
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this(websocketPath, subprotocols, false);
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}
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public WebSocketServerProtocolHandler(String websocketPath, String subprotocols, boolean allowExtensions) {
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this.websocketPath = websocketPath;
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this.subprotocols = subprotocols;
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this.allowExtensions = allowExtensions;
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}
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@Override
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public void channelBound(ChannelHandlerContext ctx, ChannelStateEvent e) throws Exception {
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ChannelPipeline cp = ctx.getPipeline();
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if (cp.get(WebSocketServerProtocolHandshakeHandler.class) == null) {
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// Add the WebSocketHandshakeHandler before this one.
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ctx.getPipeline().addBefore(ctx.getName(), WebSocketServerProtocolHandshakeHandler.class.getName(),
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new WebSocketServerProtocolHandshakeHandler(websocketPath, subprotocols, allowExtensions));
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}
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}
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@Override
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public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
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if (e.getMessage() instanceof WebSocketFrame) {
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WebSocketFrame frame = (WebSocketFrame) e.getMessage();
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if (frame instanceof CloseWebSocketFrame) {
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WebSocketServerHandshaker handshaker = WebSocketServerProtocolHandler.getHandshaker(ctx);
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handshaker.close(ctx.getChannel(), (CloseWebSocketFrame) frame);
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return;
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} else if (frame instanceof PingWebSocketFrame) {
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ctx.getChannel().write(new PongWebSocketFrame(frame.getBinaryData()));
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return;
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}
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}
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ctx.sendUpstream(e);
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}
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@Override
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public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) throws Exception {
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if (e.getCause() instanceof WebSocketHandshakeException) {
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DefaultHttpResponse response = new DefaultHttpResponse(HTTP_1_1, HttpResponseStatus.BAD_REQUEST);
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response.setContent(ChannelBuffers.wrappedBuffer(e.getCause().getMessage().getBytes()));
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ctx.getChannel().write(response).addListener(ChannelFutureListener.CLOSE);
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} else {
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ctx.getChannel().close();
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}
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}
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static WebSocketServerHandshaker getHandshaker(ChannelHandlerContext ctx) {
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return (WebSocketServerHandshaker) ctx.getAttachment();
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}
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static void setHandshaker(ChannelHandlerContext ctx, WebSocketServerHandshaker handshaker) {
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ctx.setAttachment(handshaker);
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}
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static ChannelHandler forbiddenHttpRequestResponder() {
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return new SimpleChannelHandler() {
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@Override
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public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
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if (!(e.getMessage() instanceof WebSocketFrame)) {
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DefaultHttpResponse response = new DefaultHttpResponse(HTTP_1_1, HttpResponseStatus.FORBIDDEN);
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ctx.getChannel().write(response);
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} else {
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ctx.sendUpstream(e);
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}
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}
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};
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}
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}
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@ -0,0 +1,107 @@
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/*
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* Copyright 2012 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package org.jboss.netty.handler.codec.http.websocketx;
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import static org.jboss.netty.handler.codec.http.HttpHeaders.isKeepAlive;
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import static org.jboss.netty.handler.codec.http.HttpMethod.GET;
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import static org.jboss.netty.handler.codec.http.HttpResponseStatus.FORBIDDEN;
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import static org.jboss.netty.handler.codec.http.HttpVersion.HTTP_1_1;
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import org.jboss.netty.channel.ChannelFuture;
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import org.jboss.netty.channel.ChannelFutureListener;
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import org.jboss.netty.channel.ChannelHandlerContext;
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import org.jboss.netty.channel.ChannelPipeline;
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import org.jboss.netty.channel.MessageEvent;
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import org.jboss.netty.channel.SimpleChannelHandler;
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import org.jboss.netty.handler.codec.http.DefaultHttpResponse;
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import org.jboss.netty.handler.codec.http.HttpHeaders;
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import org.jboss.netty.handler.codec.http.HttpRequest;
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import org.jboss.netty.handler.codec.http.HttpResponse;
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import org.jboss.netty.handler.ssl.SslHandler;
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import org.jboss.netty.logging.InternalLogger;
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import org.jboss.netty.logging.InternalLoggerFactory;
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/**
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* Handles the HTTP handshake (the HTTP Upgrade request)
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*/
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public class WebSocketServerProtocolHandshakeHandler extends SimpleChannelHandler {
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private static final InternalLogger logger =
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InternalLoggerFactory.getInstance(WebSocketServerProtocolHandshakeHandler.class);
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private final String websocketPath;
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private final String subprotocols;
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private final boolean allowExtensions;
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public WebSocketServerProtocolHandshakeHandler(String websocketPath, String subprotocols,
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boolean allowExtensions) {
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this.websocketPath = websocketPath;
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this.subprotocols = subprotocols;
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this.allowExtensions = allowExtensions;
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}
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@Override
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public void messageReceived(final ChannelHandlerContext ctx, MessageEvent e) throws Exception {
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if (e.getMessage() instanceof HttpRequest) {
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HttpRequest req = (HttpRequest) e.getMessage();
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if (req.getMethod() != GET) {
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sendHttpResponse(ctx, req, new DefaultHttpResponse(HTTP_1_1, FORBIDDEN));
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return;
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}
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final WebSocketServerHandshakerFactory wsFactory = new WebSocketServerHandshakerFactory(
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getWebSocketLocation(ctx.getPipeline(), req, websocketPath), subprotocols, allowExtensions);
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final WebSocketServerHandshaker handshaker = wsFactory.newHandshaker(req);
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if (handshaker == null) {
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wsFactory.sendUnsupportedWebSocketVersionResponse(ctx.getChannel());
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} else {
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final ChannelFuture handshakeFuture = handshaker.handshake(ctx.getChannel(), req);
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handshakeFuture.addListener(new ChannelFutureListener() {
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@Override
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public void operationComplete(ChannelFuture future) throws Exception {
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if (!future.isSuccess()) {
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//ctx.fireExceptionCaught(future.getCause());
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}
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}
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});
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WebSocketServerProtocolHandler.setHandshaker(ctx, handshaker);
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ctx.getPipeline().replace(this, "WS403Responder",
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WebSocketServerProtocolHandler.forbiddenHttpRequestResponder());
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}
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}
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}
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public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
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logger.error("Exception Caught", cause);
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//ctx.close();
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}
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private static void sendHttpResponse(ChannelHandlerContext ctx, HttpRequest req, HttpResponse res) {
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ChannelFuture f = ctx.getChannel().write(res);
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if (!isKeepAlive(req) || res.getStatus().getCode() != 200) {
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f.addListener(ChannelFutureListener.CLOSE);
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}
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}
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private static String getWebSocketLocation(ChannelPipeline cp, HttpRequest req, String path) {
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String protocol = "ws";
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if (cp.get(SslHandler.class) != null) {
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// SSL in use so use Secure WebSockets
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protocol = "wss";
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}
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return protocol + "://" + req.getHeader(HttpHeaders.Names.HOST) + path;
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}
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}
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@ -0,0 +1,132 @@
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/*
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* Copyright 2012 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License, version
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* 2.0 (the "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations under
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* the License.
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*/
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package org.jboss.netty.handler.codec.http.websocketx;
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import static org.jboss.netty.handler.codec.http.HttpHeaders.Values.WEBSOCKET;
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import static org.jboss.netty.handler.codec.http.HttpVersion.HTTP_1_1;
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import org.jboss.netty.handler.codec.http.DefaultHttpRequest;
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import org.jboss.netty.handler.codec.http.HttpMethod;
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import org.jboss.netty.handler.codec.http.HttpRequest;
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import org.jboss.netty.handler.codec.http.HttpVersion;
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import org.jboss.netty.handler.codec.http.HttpHeaders.Names;
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public class WebSocketRequestBuilder {
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private HttpVersion httpVersion;
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private HttpMethod method;
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private String uri;
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private String host;
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private String upgrade;
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private String connection;
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private String key;
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private String origin;
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private WebSocketVersion version;
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public WebSocketRequestBuilder httpVersion(HttpVersion httpVersion) {
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this.httpVersion = httpVersion;
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return this;
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}
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public WebSocketRequestBuilder method(HttpMethod method) {
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this.method = method;
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return this;
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}
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public WebSocketRequestBuilder uri(String uri) {
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this.uri = uri;
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return this;
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}
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public WebSocketRequestBuilder host(String host) {
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this.host = host;
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return this;
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}
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public WebSocketRequestBuilder upgrade(String upgrade) {
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this.upgrade = upgrade;
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return this;
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}
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public WebSocketRequestBuilder connection(String connection) {
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this.connection = connection;
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return this;
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}
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public WebSocketRequestBuilder key(String key) {
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this.key = key;
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return this;
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}
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public WebSocketRequestBuilder origin(String origin) {
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this.origin = origin;
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return this;
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}
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public WebSocketRequestBuilder version13() {
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this.version = WebSocketVersion.V13;
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return this;
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}
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public WebSocketRequestBuilder version8() {
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this.version = WebSocketVersion.V08;
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return this;
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}
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public WebSocketRequestBuilder version00() {
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this.version = null;
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return this;
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}
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public WebSocketRequestBuilder noVersion() {
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return this;
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}
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public HttpRequest build() {
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HttpRequest req = new DefaultHttpRequest(httpVersion, method, uri);
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if (host != null) {
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req.setHeader(Names.HOST, host);
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}
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if (upgrade != null) {
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req.setHeader(Names.UPGRADE, upgrade);
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}
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if (connection != null) {
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req.setHeader(Names.CONNECTION, connection);
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}
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if (key != null) {
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req.setHeader(Names.SEC_WEBSOCKET_KEY, key);
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}
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if (origin != null) {
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req.setHeader(Names.SEC_WEBSOCKET_ORIGIN, origin);
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}
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if (version != null) {
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req.setHeader(Names.SEC_WEBSOCKET_VERSION, version.toHttpHeaderValue());
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}
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return req;
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}
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public static HttpRequest sucessful() {
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return new WebSocketRequestBuilder().httpVersion(HTTP_1_1)
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.method(HttpMethod.GET)
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.uri("/test")
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.host("server.example.com")
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.upgrade(WEBSOCKET.toLowerCase())
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.key("dGhlIHNhbXBsZSBub25jZQ==")
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.origin("http://example.com")
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.version13()
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.build();
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}
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}
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@ -0,0 +1,176 @@
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/*
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* Copyright 2012 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License, version
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* 2.0 (the "License"); you may not use this file except in compliance with the
|
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* License. You may obtain a copy of the License at:
|
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
|
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
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* License for the specific language governing permissions and limitations under
|
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* the License.
|
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*/
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package org.jboss.netty.handler.codec.http.websocketx;
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import static org.jboss.netty.handler.codec.http.HttpHeaders.Values.WEBSOCKET;
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import static org.jboss.netty.handler.codec.http.HttpResponseStatus.FORBIDDEN;
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import static org.jboss.netty.handler.codec.http.HttpResponseStatus.SWITCHING_PROTOCOLS;
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import static org.jboss.netty.handler.codec.http.HttpVersion.HTTP_1_1;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertNotNull;
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import static org.junit.Assert.assertTrue;
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import java.util.LinkedList;
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import java.util.Queue;
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import org.jboss.netty.channel.Channel;
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import org.jboss.netty.channel.ChannelHandlerContext;
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import org.jboss.netty.channel.MessageEvent;
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import org.jboss.netty.channel.SimpleChannelHandler;
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import org.jboss.netty.handler.codec.embedder.CodecEmbedderException;
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import org.jboss.netty.handler.codec.embedder.DecoderEmbedder;
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import org.jboss.netty.handler.codec.http.DefaultHttpRequest;
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import org.jboss.netty.handler.codec.http.HttpMethod;
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import org.jboss.netty.handler.codec.http.HttpRequest;
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import org.jboss.netty.handler.codec.http.HttpRequestDecoder;
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import org.jboss.netty.handler.codec.http.HttpResponse;
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import org.jboss.netty.handler.codec.http.HttpResponseEncoder;
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import org.jboss.netty.handler.codec.http.HttpVersion;
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import org.junit.Test;
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public class WebSocketServerProtocolHandlerTest {
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@Test
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public void testHttpUpgradeRequest() {
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DecoderEmbedder<Object> embedder = decoderEmbedder();
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ChannelHandlerContext ctx = embedder.getPipeline().getContext(WebSocketServerProtocolHandshakeHandler.class);
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HttpResponseInterceptor responseInterceptor = addHttpResponseInterceptor(embedder);
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embedder.offer(WebSocketRequestBuilder.sucessful());
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HttpResponse response = responseInterceptor.getHttpResponse();
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assertEquals(SWITCHING_PROTOCOLS, response.getStatus());
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assertNotNull(WebSocketServerProtocolHandler.getHandshaker(ctx));
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}
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private HttpResponseInterceptor addHttpResponseInterceptor(DecoderEmbedder<Object> embedder) {
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HttpResponseInterceptor interceptor = new HttpResponseInterceptor();
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embedder.getPipeline().addLast("httpEncoder", interceptor);
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return interceptor;
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}
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@Test
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public void testSubsequentHttpRequestsAfterUpgradeShouldReturn403() throws Exception {
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DecoderEmbedder<Object> embedder = decoderEmbedder();
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HttpResponseInterceptor responseInterceptor = addHttpResponseInterceptor(embedder);
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embedder.offer(WebSocketRequestBuilder.sucessful());
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embedder.offer(new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, "path"));
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assertEquals(SWITCHING_PROTOCOLS, responseInterceptor.getHttpResponse().getStatus());
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assertEquals(FORBIDDEN, responseInterceptor.getHttpResponse().getStatus());
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}
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@Test
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public void testHttpUpgradeRequestInvalidUpgradeHeader() {
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DecoderEmbedder<Object> embedder = decoderEmbedder();
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HttpRequest invalidUpgradeRequest = new WebSocketRequestBuilder().httpVersion(HTTP_1_1)
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.method(HttpMethod.GET)
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.uri("/test")
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.connection("Upgrade")
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.version00()
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.upgrade("BogusSocket")
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.build();
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try {
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embedder.offer(invalidUpgradeRequest);
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} catch (Exception e) {
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assertWebSocketHandshakeException(e);
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}
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}
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@Test
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public void testHttpUpgradeRequestMissingWSKeyHeader() {
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DecoderEmbedder<Object> embedder = decoderEmbedder();
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HttpRequest missingWSKeyRequest = new WebSocketRequestBuilder().httpVersion(HTTP_1_1)
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.method(HttpMethod.GET)
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.uri("/test")
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.key(null)
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.connection("Upgrade")
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.upgrade(WEBSOCKET.toLowerCase())
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.version13()
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.build();
|
||||
|
||||
try {
|
||||
embedder.offer(missingWSKeyRequest);
|
||||
} catch (Exception e) {
|
||||
assertWebSocketHandshakeException(e);
|
||||
}
|
||||
}
|
||||
|
||||
private void assertWebSocketHandshakeException(Exception e) {
|
||||
assertTrue(e instanceof CodecEmbedderException);
|
||||
assertTrue(e.getCause() instanceof WebSocketHandshakeException);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testHandleTextFrame() {
|
||||
CustomTextFrameHandler customTextFrameHandler = new CustomTextFrameHandler();
|
||||
DecoderEmbedder<Object> embedder = decoderEmbedder(customTextFrameHandler);
|
||||
|
||||
embedder.offer(WebSocketRequestBuilder.sucessful());
|
||||
embedder.offer(new TextWebSocketFrame("payload"));
|
||||
|
||||
assertEquals("processed: payload", customTextFrameHandler.getContent());
|
||||
}
|
||||
|
||||
private DecoderEmbedder<Object> decoderEmbedder(SimpleChannelHandler handler) {
|
||||
DecoderEmbedder<Object> decoder = decoderEmbedder();
|
||||
decoder.getPipeline().addFirst("someHandler", handler);
|
||||
return decoder;
|
||||
}
|
||||
|
||||
private DecoderEmbedder<Object> decoderEmbedder() {
|
||||
DecoderEmbedder<Object> decoder = new DecoderEmbedder<Object>(
|
||||
new HttpRequestDecoder(),
|
||||
new WebSocketServerProtocolHandler("path"));
|
||||
return decoder;
|
||||
}
|
||||
|
||||
private static class CustomTextFrameHandler extends SimpleChannelHandler {
|
||||
private String content;
|
||||
|
||||
@Override
|
||||
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
|
||||
if (e.getMessage() instanceof TextWebSocketFrame) {
|
||||
TextWebSocketFrame frame = (TextWebSocketFrame) e.getMessage();
|
||||
content = "processed: " + frame.getText();
|
||||
}
|
||||
}
|
||||
|
||||
public String getContent() {
|
||||
return content;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
private static class HttpResponseInterceptor extends HttpResponseEncoder {
|
||||
|
||||
private Queue<HttpResponse> responses = new LinkedList<HttpResponse>();
|
||||
|
||||
@Override
|
||||
protected Object encode(ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception {
|
||||
responses.add((HttpResponse) msg);
|
||||
return super.encode(ctx, channel, msg);
|
||||
}
|
||||
|
||||
public HttpResponse getHttpResponse() {
|
||||
return responses.poll();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user