/**
* Invoke the {@link AtmosphereHandler#onRequest} method.
*
* @param req the {@link AtmosphereRequest}
* @param res the {@link AtmosphereResponse}
* @return action the Action operation.
* @throws java.io.IOException
* @throws javax.servlet.ServletException
*/
Action action(AtmosphereRequest req, AtmosphereResponse res)
throws IOException, ServletException {
boolean webSocketEnabled = false;
if (req.getHeaders("Connection") != null && req.getHeaders("Connection").hasMoreElements()) {
String[] e = req.getHeaders("Connection").nextElement().toString().split(",");
for (String upgrade : e) {
if (upgrade.equalsIgnoreCase("Upgrade")) {
webSocketEnabled = true;
break;
}
}
}
if (webSocketEnabled && !supportWebSocket()) {
res.setStatus(501);
res.addHeader(X_ATMOSPHERE_ERROR, "Websocket protocol not supported");
res.flushBuffer();
return new Action();
}
if (config.handlers().isEmpty()) {
logger.error(
"No AtmosphereHandler found. Make sure you define it inside META-INF/atmosphere.xml");
throw new AtmosphereMappingException(
"No AtmosphereHandler found. Make sure you define it insides META-INF/atmosphere.xml");
}
if (supportSession()) {
// Create the session needed to support the Resume
// operation from disparate requests.
HttpSession session = req.getSession(true);
// Do not allow times out.
if (session.getMaxInactiveInterval() == DEFAULT_SESSION_TIMEOUT) {
session.setMaxInactiveInterval(-1);
}
}
req.setAttribute(FrameworkConfig.SUPPORT_SESSION, supportSession());
AtmosphereHandlerWrapper handlerWrapper = map(req);
// Check Broadcaster state. If destroyed, replace it.
Broadcaster b = handlerWrapper.broadcaster;
if (b.isDestroyed()) {
synchronized (handlerWrapper) {
config.getBroadcasterFactory().remove(b, b.getID());
handlerWrapper.broadcaster = config.getBroadcasterFactory().get(b.getID());
}
}
AtmosphereResourceImpl resource =
new AtmosphereResourceImpl(
config, handlerWrapper.broadcaster, req, res, this, handlerWrapper.atmosphereHandler);
req.setAttribute(FrameworkConfig.ATMOSPHERE_RESOURCE, resource);
req.setAttribute(FrameworkConfig.ATMOSPHERE_HANDLER, handlerWrapper.atmosphereHandler);
try {
handlerWrapper.atmosphereHandler.onRequest(resource);
} catch (IOException t) {
resource.onThrowable(t);
throw t;
}
if (trackActiveRequest
&& resource.getAtmosphereResourceEvent().isSuspended()
&& req.getAttribute(FrameworkConfig.CANCEL_SUSPEND_OPERATION) == null) {
req.setAttribute(MAX_INACTIVE, System.currentTimeMillis());
aliveRequests.put(req, resource);
}
return resource.action();
}
