[HTTPCLIENT-1113] Error downloading text file with gzip content encoding

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.1.1
• Fix Version/s: 4.1.2
• Component/s: HttpClient (classic)
• Labels: gzip
• Environment: Ubuntu, Java 1.5
• Assignee: Unassigned
• Reporter: Peter Lancaster
• Created: 02/Aug/11 10:11
• Updated: 05/Oct/13 19:42
• Resolved: 03/Aug/11 11:50

Description

Hello I am getting an exception when I try to download certain files.

I don't have control over the host server, only the client. Here's my client code:

HttpParams params = new BasicHttpParams();
params.setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 300000L);
params.setParameter(ClientPNames.HANDLE_REDIRECTS, true);

// This client indicates to servers that it will support 'gzip'
// and 'deflate' compressed responses.
ContentEncodingHttpClient.setDefaultHttpParams(params);
ContentEncodingHttpClient client = new ContentEncodingHttpClient();

if (user != null && password != null)

{ String hostname = url.getHost(); HttpHost hostHttp = new HttpHost(hostname, 80, "http"); HttpHost hostHttps = new HttpHost(hostname, 443, "https"); client.getCredentialsProvider().setCredentials( new AuthScope(hostname, 80), new UsernamePasswordCredentials(user, password)); client.getCredentialsProvider().setCredentials( new AuthScope(hostname, 443), new UsernamePasswordCredentials(user, password)); // Create AuthCache instance AuthCache authCache = new BasicAuthCache(); // Generate BASIC scheme object and add it to the local auth cache BasicScheme basicAuth = new BasicScheme(); authCache.put(hostHttp, basicAuth); authCache.put(hostHttps, basicAuth); // Add AuthCache to the execution context BasicHttpContext localcontext = new BasicHttpContext(); localcontext.setAttribute(ClientContext.AUTH_CACHE, authCache); }

HttpGet httpget = new HttpGet(url.toString());
httpget.setHeader("If-Modified-Since", lastModified);

HttpResponse response = client.execute(httpget);
responseCode = response.getStatusLine().getStatusCode();
HttpEntity entity = response.getEntity();
if (responseCode == HttpStatus.SC_NOT_MODIFIED) {

} else if (responseCode == HttpStatus.SC_OK && entity != null)

{ outStream = new BufferedOutputStream(new FileOutputStream(outFilename)); entity.writeTo(outStream); }

Here's the log output:

DEBUG [2011-08-02 01:23:01,031] [org.apache.http.impl.conn.SingleClientConnManager:212] Get connection for route HttpRoute[{}->http://<host>]
DEBUG [2011-08-02 01:23:01,036] [org.apache.http.impl.conn.DefaultClientConnectionOperator:145] Connecting to <host>/<IP>:80
DEBUG [2011-08-02 01:23:01,057] [org.apache.http.client.protocol.RequestAddCookies:132] CookieSpec selected: best-match
DEBUG [2011-08-02 01:23:01,057] [org.apache.http.client.protocol.RequestAuthCache:75] Auth cache not set in the context
DEBUG [2011-08-02 01:23:01,058] [org.apache.http.impl.client.DefaultRequestDirector:631] Attempt 1 to execute request
DEBUG [2011-08-02 01:23:01,058] [org.apache.http.impl.conn.DefaultClientConnection:264] Sending request: GET <file> HTTP/1.1
DEBUG [2011-08-02 01:23:01,058] [org.apache.http.impl.conn.Wire:63] >> "GET <file> HTTP/1.1[\r][\n]"
DEBUG [2011-08-02 01:23:01,058] [org.apache.http.impl.conn.Wire:63] >> "If-Modified-Since: Mon, 01 Aug 2011 18:26:09 CEST[\r][\n]"
DEBUG [2011-08-02 01:23:01,059] [org.apache.http.impl.conn.Wire:63] >> "Host: <host>[\r][\n]"
DEBUG [2011-08-02 01:23:01,059] [org.apache.http.impl.conn.Wire:63] >> "Connection: Keep-Alive[\r][\n]"
DEBUG [2011-08-02 01:23:01,059] [org.apache.http.impl.conn.Wire:63] >> "User-Agent: Apache-HttpClient/4.1.1 (java 1.5)[\r][\n]"
DEBUG [2011-08-02 01:23:01,059] [org.apache.http.impl.conn.Wire:63] >> "Accept-Encoding: gzip,deflate[\r][\n]"
DEBUG [2011-08-02 01:23:01,060] [org.apache.http.impl.conn.Wire:63] >> "[\r][\n]"
DEBUG [2011-08-02 01:23:01,060] [org.apache.http.impl.conn.DefaultClientConnection:268] >> GET <file> HTTP/1.1
DEBUG [2011-08-02 01:23:01,060] [org.apache.http.impl.conn.DefaultClientConnection:271] >> If-Modified-Since: Mon, 01 Aug 2011 18:26:09 CEST
DEBUG [2011-08-02 01:23:01,060] [org.apache.http.impl.conn.DefaultClientConnection:271] >> Host: <host>
DEBUG [2011-08-02 01:23:01,061] [org.apache.http.impl.conn.DefaultClientConnection:271] >> Connection: Keep-Alive
DEBUG [2011-08-02 01:23:01,061] [org.apache.http.impl.conn.DefaultClientConnection:271] >> User-Agent: Apache-HttpClient/4.1.1 (java 1.5)
DEBUG [2011-08-02 01:23:01,061] [org.apache.http.impl.conn.DefaultClientConnection:271] >> Accept-Encoding: gzip,deflate
DEBUG [2011-08-02 01:23:01,085] [org.apache.http.impl.conn.Wire:63] << "HTTP/1.1 200 OK[\r][\n]"
DEBUG [2011-08-02 01:23:01,086] [org.apache.http.impl.conn.Wire:63] << "Server: nginx/0.8.54[\r][\n]"
DEBUG [2011-08-02 01:23:01,086] [org.apache.http.impl.conn.Wire:63] << "Date: Mon, 01 Aug 2011 23:23:01 GMT[\r][\n]"
DEBUG [2011-08-02 01:23:01,086] [org.apache.http.impl.conn.Wire:63] << "Content-Type: text/plain[\r][\n]"
DEBUG [2011-08-02 01:23:01,086] [org.apache.http.impl.conn.Wire:63] << "Last-Modified: Wed, 20 Jul 2011 14:39:57 GMT[\r][\n]"
DEBUG [2011-08-02 01:23:01,087] [org.apache.http.impl.conn.Wire:63] << "Transfer-Encoding: chunked[\r][\n]"
DEBUG [2011-08-02 01:23:01,087] [org.apache.http.impl.conn.Wire:63] << "Connection: keep-alive[\r][\n]"
DEBUG [2011-08-02 01:23:01,087] [org.apache.http.impl.conn.Wire:63] << "Vary: Accept-Encoding[\r][\n]"
DEBUG [2011-08-02 01:23:01,087] [org.apache.http.impl.conn.Wire:63] << "Expires: Wed, 31 Aug 2011 23:23:01 GMT[\r][\n]"
DEBUG [2011-08-02 01:23:01,088] [org.apache.http.impl.conn.Wire:63] << "Cache-Control: max-age=2592000[\r][\n]"
DEBUG [2011-08-02 01:23:01,088] [org.apache.http.impl.conn.Wire:63] << "Content-Encoding: gzip[\r][\n]"
DEBUG [2011-08-02 01:23:01,088] [org.apache.http.impl.conn.Wire:63] << "[\r][\n]"
DEBUG [2011-08-02 01:23:01,088] [org.apache.http.impl.conn.DefaultClientConnection:249] Receiving response: HTTP/1.1 200 OK
DEBUG [2011-08-02 01:23:01,089] [org.apache.http.impl.conn.DefaultClientConnection:252] << HTTP/1.1 200 OK
DEBUG [2011-08-02 01:23:01,089] [org.apache.http.impl.conn.DefaultClientConnection:255] << Server: nginx/0.8.54
DEBUG [2011-08-02 01:23:01,089] [org.apache.http.impl.conn.DefaultClientConnection:255] << Date: Mon, 01 Aug 2011 23:23:01 GMT
DEBUG [2011-08-02 01:23:01,089] [org.apache.http.impl.conn.DefaultClientConnection:255] << Content-Type: text/plain
DEBUG [2011-08-02 01:23:01,089] [org.apache.http.impl.conn.DefaultClientConnection:255] << Last-Modified: Wed, 20 Jul 2011 14:39:57 GMT
DEBUG [2011-08-02 01:23:01,090] [org.apache.http.impl.conn.DefaultClientConnection:255] << Transfer-Encoding: chunked
DEBUG [2011-08-02 01:23:01,090] [org.apache.http.impl.conn.DefaultClientConnection:255] << Connection: keep-alive
DEBUG [2011-08-02 01:23:01,090] [org.apache.http.impl.conn.DefaultClientConnection:255] << Vary: Accept-Encoding
DEBUG [2011-08-02 01:23:01,090] [org.apache.http.impl.conn.DefaultClientConnection:255] << Expires: Wed, 31 Aug 2011 23:23:01 GMT
DEBUG [2011-08-02 01:23:01,090] [org.apache.http.impl.conn.DefaultClientConnection:255] << Cache-Control: max-age=2592000
DEBUG [2011-08-02 01:23:01,091] [org.apache.http.impl.conn.DefaultClientConnection:255] << Content-Encoding: gzip
DEBUG [2011-08-02 01:23:01,091] [org.apache.http.impl.client.DefaultRequestDirector:477] Connection can be kept alive indefinitely
DEBUG [2011-08-02 01:23:01,131] [org.apache.http.impl.conn.Wire:63] << "600a[\r][\n]"
DEBUG [2011-08-02 01:23:01,132] [org.apache.http.impl.conn.Wire:77] << "[0x1f]"
DEBUG [2011-08-02 01:23:03,838] [org.apache.http.impl.conn.Wire:63] << "[\r][\n]"

.... (Content)

DEBUG [2011-08-02 01:23:03,839] [org.apache.http.impl.conn.SingleClientConnManager:267] Releasing connection org.apache.http.impl.conn.SingleClientConnManager$ConnAdapter@2aa3873
DEBUG [2011-08-02 01:23:03,839] [org.apache.http.impl.conn.SingleClientConnManager:285] Released connection open but not reusable.
DEBUG [2011-08-02 01:23:03,839] [org.apache.http.impl.conn.DefaultClientConnection:152] Connection shut down
ERROR [2011-08-02 01:23:03,840] [app] Exception downloading file
java.io.EOFException
at java.util.zip.GZIPInputStream.readUByte(GZIPInputStream.java:224)
at java.util.zip.GZIPInputStream.readUShort(GZIPInputStream.java:214)
at java.util.zip.GZIPInputStream.readHeader(GZIPInputStream.java:153)
at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:75)
at java.util.zip.GZIPInputStream.<init>(GZIPInputStream.java:85)
at org.apache.http.client.entity.GzipDecompressingEntity.getContent(GzipDecompressingEntity.java:63)
at org.apache.http.util.EntityUtils.consume(EntityUtils.java:65)
at org.apache.http.conn.BasicManagedEntity.ensureConsumed(BasicManagedEntity.java:98)
at org.apache.http.conn.BasicManagedEntity.writeTo(BasicManagedEntity.java:115)
at util.FileDownload.download(FileDownload.java:188) <--- my app

Does this happen because the server doesn't specify the content length?

Issue Links

• is a clone of: HTTPCLIENT-1075 ContentEncodingHttpClient.execute(HttpGet, ResponseHandler<T>) throws IOException when reading compressed response