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From "Johannes Gruber (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HTTPCLIENT-1690) ZipException occurs when content-encoding-header is set for 304-response
Date Tue, 13 Oct 2015 08:40:05 GMT
Johannes Gruber created HTTPCLIENT-1690:
-------------------------------------------

             Summary: 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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