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https://issues.apache.org/jira/browse/HTTPCLIENT-1690?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14954628#comment-14954628
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Johannes Gruber commented on HTTPCLIENT-1690:
---------------------------------------------
The test scenario is somewhat esoteric. Please let me know, if you need more
details!
> ZipException occurs when content-encoding-header is set for 304-response
> -------------------------------------------------------------------------
>
> Key: HTTPCLIENT-1690
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1690
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpCache
> Affects Versions: 4.5
> Reporter: Johannes Gruber
>
> h4.Test scenario
> - Setup http server
> - Execute Request twice
> - First response
> -- Status: 200
> -- Cache-Control: public
> -- ETag: 123
> -- Body: some text
> - Second response
> -- Status: 304
> -- Content-Encoding: gzip
> - Effect: java.util.zip.ZipException: Not in GZIP format
> - Expected: Cached response
> h4.JUnit-Test
> - Dependencies: junit 4.11, commons-io 2.4, com.github.tomakehurst:wiremock
> 1.57
> {code}
> import com.github.tomakehurst.wiremock.junit.WireMockRule;
> import org.apache.commons.io.IOUtils;
> import org.apache.http.client.methods.CloseableHttpResponse;
> import org.apache.http.client.methods.HttpGet;
> import org.apache.http.impl.client.CloseableHttpClient;
> import org.apache.http.impl.client.HttpClientBuilder;
> import org.apache.http.impl.client.cache.CacheConfig;
> import org.apache.http.impl.client.cache.CachingHttpClientBuilder;
> import org.junit.Assert;
> import org.junit.Rule;
> import org.junit.Test;
> import java.io.IOException;
> import static com.github.tomakehurst.wiremock.client.WireMock.aResponse;
> import static com.github.tomakehurst.wiremock.client.WireMock.equalTo;
> import static com.github.tomakehurst.wiremock.client.WireMock.get;
> import static com.github.tomakehurst.wiremock.client.WireMock.stubFor;
> import static com.github.tomakehurst.wiremock.client.WireMock.urlEqualTo;
> public class GZipCachingHttpClientBuilderTest {
> private static final String TEST_BODY = "Sometext";
> @Rule
> public WireMockRule wireMockRule = new WireMockRule(0);
> @Test
> public void testGzipError() throws Exception {
> stubFor(get(urlEqualTo("/my/resource"))
> .willReturn(aResponse()
> .withStatus(200)
> .withHeader("Cache-Control", "public")
> .withHeader("ETag", "123")
> .withBody(TEST_BODY)
> ));
> stubFor(get(urlEqualTo("/my/resource"))
> .withHeader("If-None-Match", equalTo("123"))
> .willReturn(aResponse()
> .withHeader("Content-Encoding", "gzip")
> .withStatus(304)
> ));
> CacheConfig.Builder cfgBuilder = CacheConfig.custom();
> CacheConfig cfg = cfgBuilder.setMaxCacheEntries(1024).build();
> HttpClientBuilder bld =
> CachingHttpClientBuilder.create().setCacheConfig(cfg);
> CloseableHttpClient client = bld.build();
> executeRequest(client);
> executeRequest(client); // second request causes Exception :-(
> }
> private void executeRequest(CloseableHttpClient client) throws IOException {
> int port = wireMockRule.port();
> CloseableHttpResponse resp = client.execute(new
> HttpGet("http://localhost:"+port+"/my/resource";));
> Assert.assertEquals(TEST_BODY,
> IOUtils.toString(resp.getEntity().getContent()));
> }
> }
> {code}
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