/*
* Copyright 2014 Jeanfrancois Arcand
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package org.atmosphere.container;
import org.atmosphere.cpr.Action;
import org.atmosphere.cpr.ApplicationConfig;
import org.atmosphere.cpr.AtmosphereConfig;
import org.atmosphere.cpr.AtmosphereRequest;
import org.atmosphere.cpr.AtmosphereResource;
import org.atmosphere.cpr.AtmosphereResponse;
import org.atmosphere.cpr.WebSocketProcessorFactory;
import org.atmosphere.util.Utils;
import org.atmosphere.websocket.WebSocket;
import org.atmosphere.websocket.WebSocketProcessor;
import org.eclipse.jetty.websocket.api.UpgradeRequest;
import org.eclipse.jetty.websocket.api.UpgradeResponse;
import org.eclipse.jetty.websocket.api.WebSocketBehavior;
import org.eclipse.jetty.websocket.api.WebSocketPolicy;
import org.eclipse.jetty.websocket.server.ServletWebSocketRequest;
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 org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.lang.reflect.Method;
/**
* Jetty 9 WebSocket support.
*
* @author Jeanfrancois Arcand
*/
public class Jetty9AsyncSupportWithWebSocket extends Servlet30CometSupport {
private static final Logger logger = LoggerFactory.getLogger(Jetty9AsyncSupportWithWebSocket.class);
private final WebSocketServerFactory webSocketFactory;
public Jetty9AsyncSupportWithWebSocket(final AtmosphereConfig config) {
super(config);
String bs = config.getInitParameter(ApplicationConfig.WEBSOCKET_BUFFER_SIZE);
WebSocketPolicy policy = new WebSocketPolicy(WebSocketBehavior.SERVER);
if (bs != null) {
policy.setInputBufferSize(Integer.parseInt(bs));
}
String max = config.getInitParameter(ApplicationConfig.WEBSOCKET_IDLETIME);
if (max != null) {
policy.setIdleTimeout(Integer.parseInt(max));
}
try {
// Crazy Jetty API Incompatibility
String serverInfo = config.getServletConfig().getServletContext().getServerInfo();
boolean isJetty91Plus = false;
if (serverInfo != null) {
int version = Integer.valueOf(serverInfo.split("/")[1].substring(0, 3).replace(".", ""));
isJetty91Plus = version > 90;
}
max = config.getInitParameter(ApplicationConfig.WEBSOCKET_MAXTEXTSIZE);
if (max != null) {
//policy.setMaxMessageSize(Integer.parseInt(max));
Method m;
if (isJetty91Plus) {
m = policy.getClass().getMethod("setMaxTextMessageSize", new Class[]{int.class});
} else {
m = policy.getClass().getMethod("setMaxMessageSize", new Class[]{long.class});
}
m.invoke(policy, Integer.parseInt(max));
}
max = config.getInitParameter(ApplicationConfig.WEBSOCKET_MAXBINARYSIZE);
if (max != null) {
//policy.setMaxMessageSize(Integer.parseInt(max));
Method m;
if (isJetty91Plus) {
m = policy.getClass().getMethod("setMaxBinaryMessageSize", new Class[]{int.class});
} else {
m = policy.getClass().getMethod("setMaxMessageSize", new Class[]{long.class});
}
m.invoke(policy, Integer.parseInt(max));
}
} catch (Exception ex) {
logger.warn("", ex);
}
final WebSocketProcessor webSocketProcessor = WebSocketProcessorFactory.getDefault().getWebSocketProcessor(config.framework());
webSocketFactory = new WebSocketServerFactory(policy) {
@Override
public boolean acceptWebSocket(final HttpServletRequest request, final HttpServletResponse response) throws IOException {
setCreator(new WebSocketCreator() {
// @Override 9.0.x
public Object createWebSocket(UpgradeRequest upgradeRequest, UpgradeResponse upgradeResponse) {
ServletWebSocketRequest r = ServletWebSocketRequest.class.cast(upgradeRequest);
r.getExtensions().clear();
if (!webSocketProcessor.handshake(request)) {
try {
response.sendError(HttpServletResponse.SC_FORBIDDEN, "WebSocket requests rejected.");
} catch (IOException e) {
logger.trace("", e);
}
return null;
}
return new Jetty9WebSocketHandler(request, config.framework(), webSocketProcessor);
}
// @Override 9.1.x
public Object createWebSocket(ServletUpgradeRequest req, ServletUpgradeResponse resp) {
req.getExtensions().clear();
if (!webSocketProcessor.handshake(request)) {
try {
response.sendError(HttpServletResponse.SC_FORBIDDEN, "WebSocket requests rejected.");
} catch (IOException e) {
logger.trace("", e);
}
return null;
}
return new Jetty9WebSocketHandler(request, config.framework(), webSocketProcessor);
}
});
return super.acceptWebSocket(request, response);
}
};
try {
webSocketFactory.start();
} catch (Exception e) {
logger.error("", e);
}
}
@Override
public Action service(AtmosphereRequest req, AtmosphereResponse res)
throws IOException, ServletException {
Action action = null;
Boolean b = (Boolean) req.getAttribute(WebSocket.WEBSOCKET_INITIATED);
if (b == null) b = Boolean.FALSE;
if (!Utils.webSocketEnabled(req) && req.getAttribute(WebSocket.WEBSOCKET_ACCEPT_DONE) == null) {
if (req.resource() != null && req.resource().transport() == AtmosphereResource.TRANSPORT.WEBSOCKET) {
WebSocket.notSupported(req, res);
return Action.CANCELLED;
} else {
return super.service(req, res);
}
} else {
if (webSocketFactory != null && !b) {
req.setAttribute(WebSocket.WEBSOCKET_INITIATED, true);
webSocketFactory.acceptWebSocket(req, res);
req.setAttribute(WebSocket.WEBSOCKET_ACCEPT_DONE, true);
return new Action();
}
action = suspended(req, res);
if (action.type() == Action.TYPE.SUSPEND) {
} else if (action.type() == Action.TYPE.RESUME) {
req.setAttribute(WebSocket.WEBSOCKET_RESUME, true);
}
}
return action == null ? super.service(req, res) : action;
}
/**
* Return the container's name.
*/
public String getContainerName() {
return config.getServletConfig().getServletContext().getServerInfo() + " with WebSocket enabled.";
}
@Override
public boolean supportWebSocket() {
return true;
}
}