@Override
            public void onNext(HttpObject obj) {
                if (!headersReceived.get()) {
                    headersReceived.set(true);
                    assertThat(obj.isEndOfStream()).isFalse();
                } else {
                    assertThat(obj.isEndOfStream()).isTrue();
                }
            }
Test for issues that may happen when doing simple proxying.
it/server/src/test/java/com/linecorp/armeria/server/http/HttpProxyIntegrationTest.java