@Test
    public void testStartRepeatedly() {
        RpcServer rpcServer = new RpcServer(PortScan.select());
        rpcServer.start();

        try {
            rpcServer.start();
            Assert.fail("Should not reach here!");
        } catch (Exception e) {
            // expect IllegalStateException
        }
        rpcServer.stop();
    }
test {@link AbstractRemotingServer} apis

@author tsui
@version $Id: RemotingServerTest.java, v 0.1 May 16, 2018 10:00:48 AM tsui Exp $
src/test/java/com/alipay/remoting/RemotingServerTest.java