@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(); } }