    @Test
    public void testOldProtocolHeaderToRequest() {

        DefaultRequest request = new DefaultRequest();
        request.setServiceInterface(Echo.Iface.class);
        MetaUtil.convertOldProtocolHeaderToRequest(requestHeader, request);
        Assert.assertEquals(request.getRemoteAppkey(), "com.sankuai.mock2");
        Assert.assertEquals(request.getClientIp(), "127.0.0.2");
        Assert.assertEquals(request.getTransportTraceInfo().getSpanId(), "0.1");
        Assert.assertEquals(request.getServiceName(), null);
    }