@Override
public Extension newInstance(ExtensionConfig config) {
if (config == null) {
return null;
}
String name = config.getName();
if (StringUtil.isBlank(name)) {
return null;
}
Class<? extends Extension> extClass = getExtension(name);
if (extClass == null) {
return null;
}
try {
Extension ext = extClass.newInstance();
if (ext instanceof AbstractExtension) {
AbstractExtension aext = (AbstractExtension) ext;
aext.setConfig(config);
aext.setPolicy(policy);
aext.setBufferPool(bufferPool);
}
return ext;
} catch (InstantiationException | IllegalAccessException e) {
throw new WebSocketException("Cannot instantiate extension: " + extClass, e);
}
}
@Override
public void setConfig(final ExtensionConfig config) {
configRequested = new ExtensionConfig(config);
configNegotiated = new ExtensionConfig(config.getName());
for (String key : config.getParameterKeys()) {
key = key.trim();
switch (key) {
case "client_max_window_bits":
case "server_max_window_bits":
{
// Not supported by Jetty
// Don't negotiate these parameters
break;
}
case "client_no_context_takeover":
{
configNegotiated.setParameter("client_no_context_takeover");
switch (getPolicy().getBehavior()) {
case CLIENT:
incomingContextTakeover = false;
break;
case SERVER:
outgoingContextTakeover = false;
break;
}
break;
}
case "server_no_context_takeover":
{
configNegotiated.setParameter("server_no_context_takeover");
switch (getPolicy().getBehavior()) {
case CLIENT:
outgoingContextTakeover = false;
break;
case SERVER:
incomingContextTakeover = false;
break;
}
break;
}
default:
{
throw new IllegalArgumentException();
}
}
}
super.setConfig(configNegotiated);
}
@Override
public void initializeNativeSession(Session session) {
super.initializeNativeSession(session);
this.id = ObjectUtils.getIdentityHexString(getNativeSession());
this.uri = session.getUpgradeRequest().getRequestURI();
this.headers = new HttpHeaders();
this.headers.putAll(getNativeSession().getUpgradeRequest().getHeaders());
this.headers = HttpHeaders.readOnlyHttpHeaders(headers);
this.acceptedProtocol = session.getUpgradeResponse().getAcceptedSubProtocol();
List<ExtensionConfig> source = getNativeSession().getUpgradeResponse().getExtensions();
this.extensions = new ArrayList<WebSocketExtension>(source.size());
for (ExtensionConfig ec : source) {
this.extensions.add(new WebSocketExtension(ec.getName(), ec.getParameters()));
}
if (this.user == null) {
this.user = session.getUpgradeRequest().getUserPrincipal();
}
}