I can't find a way to attach a test project, so I just post the test
file in here:
package com.example.helloandroid;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.zip.GZIPInputStream;
import android.util.Log;
public class Tester {
private final static String TAG = "GZIP";
public void testChunkedGZip(){
InputStream is = null;
try {
byte[] buf = new byte[512];
int read = -1;
int readSize = 0;
// Just pick a site, as long as it supported
accept-encoding=gzip
// and the response is large enough to have Transfer-
Encoding=chunked.
HttpURLConnection conn = (HttpURLConnection) new
URL("http://
vnexpress.net/GL/Home/").openConnection();
conn.setRequestProperty("Accept-Encoding", "gzip");
conn.setRequestProperty("Connection", "Keep-Alive");
int response = conn.getResponseCode();
Log.d(TAG, "======================");
Log.d(TAG,"HTTP Response: " + response);
Log.d(TAG,"header");
for (String headerName :
conn.getHeaderFields().keySet()) {
for (String headerValue :
conn.getHeaderFields().get(headerName))
{
Log.d(TAG,headerName + ":" +
headerValue);
}
}
Log.d(TAG,"body");
is = conn.getInputStream();
if (conn.getHeaderField("Content-encoding") != null &&
conn.getHeaderField("Content-
encoding").trim().toLowerCase().equals("gzip")){
is = new GZIPInputStream(is);
}
while ((read = is.read(buf)) != -1 ) {
readSize += read;
}
Log.d(TAG,"bytes read:" + readSize);
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try{
if (is != null) is.close();
} catch(Exception e){}
}
}
}
//////////////////////
Testing Activity
package com.example.helloandroid;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
public class HelloAndroid extends Activity {
private Button button;
private final static String TAG = "GZIP";
Runnable urlReaderRunnable = new Runnable(){
public void run() {
Tester tester = new Tester();
try {
tester.testChunkedGZip();
} catch (Exception e) {
Log.d(TAG, "Exception", e);
}
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.main);
this.button = (Button) this.findViewById(R.id.TestButton);
this.button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// 2nd click always return -1
// this is only happens when Connection =
Keep-Alive, Content-
Encoding=Gzip, Transfer-Encoding=Chunked
// the error comes from InflaterInputStream
(line 190-192) doesn't
clean up
// the last chunk (ending chunk) correctly. The
last chunk is (0x)
30 0d 0a.
// This is tested with Android 1.6 and 2.1 with
the same result.
Log.d(TAG, "Button is clicked");
new Thread(urlReaderRunnable).start();
}
});
}
}
On Mar 3, 6:05 am, SN <[email protected]> wrote:
> Hi,
>
> I found a problem with GZIP input stream when wrapping InputStream
> from HttpURLConnection. When the server response with Transfer-
> Encoding=chunked, Content-Encoding=gzip and Connection=Keep-Alive. The
> second post always return -1.
>
> After digging into the source code, I found the place that could be a
> bug:
> InflaterInputStream.java (line 190 to 192)
> if (inf.needsInput()) {
> fill();
> }
>
> Because InflaterInputStream doesn't need more input, it doesn't try to
> read the end of chunked encoding (0x)(30 0a 0d) that cause the second
> post to return with -1 every time. Does anybody have the same issue?
>
> Thanks,
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