public Action inspect(final AtmosphereResource ar) {
if (Utils.webSocketMessage(ar)) return Action.CONTINUE;
final AtmosphereResourceImpl r = AtmosphereResourceImpl.class.cast(ar);
final AtmosphereRequest request = r.getRequest(false);
final AtmosphereResponse response = r.getResponse(false);
String uuid = request.getHeader(HeaderConfig.X_ATMOSPHERE_TRACKING_ID);
String handshakeUUID = request.getHeader(HeaderConfig.X_ATMO_PROTOCOL);
if (uuid != null && uuid.equals("0") && handshakeUUID != null) {
if (enforceAtmosphereVersion) {
String javascriptVersion = request.getHeader(HeaderConfig.X_ATMOSPHERE_FRAMEWORK);
int version = parseVersion(javascriptVersion.split("-")[0]);
if (version < 221) {
logger.error("Invalid Atmosphere Version {}", javascriptVersion);
response.setStatus(501);
response.addHeader(X_ATMOSPHERE_ERROR, "Atmosphere Protocol version not supported.");
try {
response.flushBuffer();
} catch (IOException e) {
}
return Action.CANCELLED;
}
}
request.header(HeaderConfig.X_ATMO_PROTOCOL, null);
// Extract heartbeat data
int heartbeatInterval = 0;
String heartbeatData = "";
for (final AtmosphereInterceptor interceptor : framework.interceptors()) {
if (HeartbeatInterceptor.class.isAssignableFrom(interceptor.getClass())) {
final HeartbeatInterceptor heartbeatInterceptor = HeartbeatInterceptor.class.cast(interceptor);
heartbeatInterval = heartbeatInterceptor.clientHeartbeatFrequencyInSeconds() * 1000;
heartbeatData = new String(heartbeatInterceptor.getPaddingBytes());
break;
}
}
// Since 1.0.10
final StringBuffer message = new StringBuffer(r.uuid()).append(wsDelimiter);
// since 2.2
if (enforceAtmosphereVersion) {
message.append(heartbeatInterval)
.append(wsDelimiter)
.append(heartbeatData)
.append(wsDelimiter);
}
// https://github.com/Atmosphere/atmosphere/issues/993
final AtomicReference<String> protocolMessage = new AtomicReference<String>(message.toString());
if (r.getBroadcaster().getBroadcasterConfig().hasFilters()) {
for (BroadcastFilter bf : r.getBroadcaster().getBroadcasterConfig().filters()) {
if (TrackMessageSizeFilter.class.isAssignableFrom(bf.getClass())) {
protocolMessage.set((String) f.filter(r.getBroadcaster().getID(), r, protocolMessage.get(), protocolMessage.get()).message());
break;
}
}
}
if (!Utils.resumableTransport(r.transport())) {
OnSuspend a = new OnSuspend() {
@Override
public void onSuspend(AtmosphereResourceEvent event) {
response.write(protocolMessage.get());
try {
response.flushBuffer();
} catch (IOException e) {
logger.trace("", e);
}
r.removeEventListener(this);
}
};
// Pass the information to Servlet Based Framework
request.setAttribute(CALLBACK_JAVASCRIPT_PROTOCOL, a);
r.addEventListener(a);
} else {
response.write(protocolMessage.get());
}