FutureResponseHandler respHdl = new FutureResponseHandler();
BodyDataSink dataSink = con.send(new HttpRequestHeader("POST", "http://localhost:" + container.getLocalPort() + "/test"), respHdl);
dataSink.write("test");
IHttpResponse response = respHdl.getResponse();
Assert.assertEquals(200, response.getStatus());
BlockingBodyDataSource dataSource = response.getBlockingBody();
Assert.assertEquals("test", dataSource.readStringByLength(4));
dataSink.write("12345");
Assert.assertEquals("12345", dataSource.readStringByLength(5));