43     public static void sendException(HttpServerExchange exchange, int status, Throwable e) {
 44         try {
 45             exchange.setStatusCode(status);
 46             exchange.getResponseHeaders().put(Headers.CONTENT_TYPE, "application/x-wf-jbmar-exception;version=1");
 47             final MarshallingConfiguration marshallingConfiguration = new MarshallingConfiguration();
 48             marshallingConfiguration.setVersion(2);
 49             final Marshaller marshaller = RIVER_MARSHALLER_FACTORY.createMarshaller(marshallingConfiguration);
 50             OutputStream outputStream = exchange.getOutputStream();
 51             final ByteOutput byteOutput = Marshalling.createByteOutput(outputStream);
 52             // start the marshaller
 53             marshaller.start(byteOutput);
 54             marshaller.writeObject(e);
 55             marshaller.write(0);
 56             marshaller.finish();
 57             marshaller.flush();
 58             exchange.endExchange();
 59         } catch (Exception ex) {
 60             HttpClientMessages.MESSAGES.failedToWriteException(ex);
 61             exchange.endExchange();
 62         }
 63     }