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From "Francois-Xavier Bonnet (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HTTPCLIENT-1277) CachingHttpClient sends a 304 Not Modified to an unconditional request
Date Fri, 14 Dec 2012 13:20:12 GMT
Francois-Xavier Bonnet created HTTPCLIENT-1277:
--------------------------------------------------

             Summary: CachingHttpClient sends a 304 Not Modified to an unconditional request
                 Key: HTTPCLIENT-1277
                 URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1277
             Project: HttpComponents HttpClient
          Issue Type: Bug
          Components: Cache
    Affects Versions: 4.2.2, Snapshot
            Reporter: Francois-Xavier Bonnet


When sending a conditional request, CachingHttpClient can cache the 304 response depending
on the response headers. Then when sending an unconditional request, the 304 cached is reused.

In method org.apache.http.impl.client.cache.CachedResponseSuitabilityChecker.canCachedResponseBeUsed(HttpHost,
HttpRequest, HttpCacheEntry, Date) there is not test to check if the cached response is a
304 when the request is unconditional.

Here is a unit test that is broken:
	@Test
	public void testDoesNotSend304ForNonConditionalRequest() throws Exception {

		Date now = new Date();
		Date inOneMinute = new Date(System.currentTimeMillis()+60000);

		impl = new CachingExec(mockBackend, new BasicHttpCache(),CacheConfig.DEFAULT);

		HttpRequestWrapper req1 = HttpRequestWrapper.wrap(new HttpGet("http://foo.example.com/"));
		req1.addHeader("If-None-Match", "etag");

		HttpRequestWrapper req2 = HttpRequestWrapper.wrap(new HttpGet("http://foo.example.com/"));

		HttpResponse resp1 = new BasicHttpResponse(HttpVersion.HTTP_1_1, HttpStatus.SC_NOT_MODIFIED,
"Not modified");
		resp1.setHeader("Date", DateUtils.formatDate(now));
		resp1.setHeader("Cache-Control","public, max-age=60");
		resp1.setHeader("Expires",DateUtils.formatDate(inOneMinute));
		resp1.setHeader("Etag", "etag");
		resp1.setHeader("Vary", "Accept-Encoding");

		HttpResponse resp2 = new BasicHttpResponse(HttpVersion.HTTP_1_1, HttpStatus.SC_NOT_MODIFIED,
"Not modified");
		resp2.setHeader("Date", DateUtils.formatDate(now));
		resp2.setHeader("Cache-Control","public, max-age=60");
		resp2.setHeader("Expires",DateUtils.formatDate(inOneMinute));
		resp2.setHeader("Etag", "etag");
		resp2.setHeader("Vary", "Accept-Encoding");
		resp2.setEntity(HttpTestUtils.makeBody(128));

		backendExpectsAnyRequestAndReturn(resp1);
		backendExpectsAnyRequestAndReturn(resp2).anyTimes();
		replayMocks();
		HttpResponse result1 = impl.execute(route, req1);
		HttpResponse result2 = impl.execute(route, req2);
		verifyMocks();

		assertEquals(HttpStatus.SC_NOT_MODIFIED, result1.getStatusLine().getStatusCode());
		assertNull(result1.getEntity());
		assertEquals(HttpStatus.SC_OK, result2.getStatusLine().getStatusCode());
		Assert.assertNotNull(result2.getEntity());
	}



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