@Test public void testAddNewViaHeader() { String hostname = ProxyUtils.getHostName(); HttpMessage httpMessage = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, "/endpoint"); ProxyUtils.addVia(httpMessage); List<String> viaHeaders = httpMessage.headers().getAll(HttpHeaders.Names.VIA); assertThat(viaHeaders, hasSize(1)); String expectedViaHeader = "1.1 " + hostname; assertEquals(expectedViaHeader, viaHeaders.get(0)); }