Francois-Xavier Bonnet created HTTPCLIENT-1277:
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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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