// should not happen, as stateful context requests are always negotiated down to stateless in this implementation.
long contextId = contextBody.in_context_msg().client_context_id;
threadLocal.sasReply = createMsgCtxError(contextId, 4 /* major status: no context */);
throw new NO_PERMISSION("SAS context does not exist.");
} else if (contextBody.discriminator() == MTEstablishContext.value) {
EstablishContext message = contextBody.establish_msg();
threadLocal.contextId = message.client_context_id;
threadLocal.sasContextReceived = true;
if (message.client_authentication_token != null && message.client_authentication_token.length > 0) {
if (traceEnabled) {