private void startServer() throws Exception {
ServletHandler replicationHandler = new ServletHandler();
ReplicationService service = new ReplicationService(Collections.singletonMap("s1", serverReplicator));
ServletHolder servlet = new ServletHolder(new ReplicationServlet(service));
replicationHandler.addServletWithMapping(servlet, ReplicationService.REPLICATION_CONTEXT + "/*");
server = newHttpServer(replicationHandler);
port = serverPort(server);
host = serverHost(server);
}