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HTTPCLIENT-1137: The values for the Via header are created by httpclient-cache 

for each cached and backend request. Committing patch by alinachegalati at yahoo dot com.

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1197713 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jonathan Moore 2011-11-04 19:07:52 +00:00
parent 5dffa49321
commit d19daa3dcd
1 changed files with 19 additions and 7 deletions
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22
httpclient-cache/src/main/java/org/apache/http/impl/client/cache/CachingHttpClient.java vendored
View File

@ -29,6 +29,7 @@ package org.apache.http.impl.client.cache;
import java.io.IOException; import java.io.IOException;
import java.net.URI; import java.net.URI;
import java.util.Date; import java.util.Date;
import java.util.HashMap;
import java.util.List; import java.util.List;
import java.util.Map; import java.util.Map;
import java.util.concurrent.atomic.AtomicLong; import java.util.concurrent.atomic.AtomicLong;
@ -120,6 +121,8 @@ public class CachingHttpClient implements HttpClient {
private final AtomicLong cacheMisses = new AtomicLong(); private final AtomicLong cacheMisses = new AtomicLong();
private final AtomicLong cacheUpdates = new AtomicLong(); private final AtomicLong cacheUpdates = new AtomicLong();
private final Map<ProtocolVersion, String> viaHeaders = new HashMap<ProtocolVersion, String>(4);
private final HttpClient backend; private final HttpClient backend;
private final HttpCache responseCache; private final HttpCache responseCache;
private final CacheValidityPolicy validityPolicy; private final CacheValidityPolicy validityPolicy;
@ -601,16 +604,25 @@ public class CachingHttpClient implements HttpClient {
} }
private String generateViaHeader(HttpMessage msg) { private String generateViaHeader(HttpMessage msg) {
final ProtocolVersion pv = msg.getProtocolVersion();
String existingEntry = viaHeaders.get(pv);
if (existingEntry != null) return existingEntry;
final VersionInfo vi = VersionInfo.loadVersionInfo("org.apache.http.client", getClass().getClassLoader()); final VersionInfo vi = VersionInfo.loadVersionInfo("org.apache.http.client", getClass().getClassLoader());
final String release = (vi != null) ? vi.getRelease() : VersionInfo.UNAVAILABLE; final String release = (vi != null) ? vi.getRelease() : VersionInfo.UNAVAILABLE;
final ProtocolVersion pv = msg.getProtocolVersion();
String value;
if ("http".equalsIgnoreCase(pv.getProtocol())) { if ("http".equalsIgnoreCase(pv.getProtocol())) {
return String.format("%d.%d localhost (Apache-HttpClient/%s (cache))", value = String.format("%d.%d localhost (Apache-HttpClient/%s (cache))", pv.getMajor(), pv.getMinor(),
pv.getMajor(), pv.getMinor(), release); release);
} else { } else {
return String.format("%s/%d.%d localhost (Apache-HttpClient/%s (cache))", value = String.format("%s/%d.%d localhost (Apache-HttpClient/%s (cache))", pv.getProtocol(), pv.getMajor(),
pv.getProtocol(), pv.getMajor(), pv.getMinor(), release); pv.getMinor(), release);
} }
viaHeaders.put(pv, value);
return value;
} }
private void setResponseStatus(final HttpContext context, final CacheResponseStatus value) { private void setResponseStatus(final HttpContext context, final CacheResponseStatus value) {