byte[] content = IOUtils.toByteArray(input);
input.close();
// mock TSA server (RFC 3161)
MockHttpServer mockServer = new MockHttpServer(15371);
mockServer.startServer();
String tsaUrl = "http://localhost:" + mockServer.getServerPort() + "/";
MockHttpServer.MockHttpServerResponse response = new MockHttpServer.MockHttpServerResponse();
response.setMockResponseContent(content);
response.setMockResponseContentType("application/timestamp-reply");
response.setMockResponseCode(200);