invalid stream header only in opera from servlet !

[Frank Jacobsen]

I have this code in a servlet, that is called from a applet, it works fine with IE, MOZILLA, but in opera i got this exception:

java.io.StreamCorruptedException: invalid stream header

Anyone that have any ideas ???

 
/**
 * This method takes the Hashtable with the return data and serializes it to a Response object ObjectOutputStream
 * @param response The HttpServletResponse object
 * @param responseParm The Hashtable object containing return values
 * @param user logUser
 */
protected void doPutResponse(HttpServletResponse response, Hashtable responseParm, LogUser user) throws IOException {
// Serialize return data Hashtable via ObjectOutputStream
ByteArrayOutputStream bout = null;
try {
response.setContentType("application/octet-stream");
 
bout = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(bout);
oos.flush(); //flush to send streamheader to recieving ObjectInputStream in applet - OPERA-browser fix
oos.writeObject(responseParm);
oos.flush();
 
byte[] ba = bout.toByteArray();
 
response.setContentLength(ba.length);
 
OutputStream os = response.getOutputStream();
 
os.write(ba);
os.flush();
} catch (IOException ioe) {
logger.error(
user,
"Error",
"Exception: "
+ ioe.getClass().getName()
+ ", when trying to serialize return data Hashtable object to HttpServletResponse ObjectOutputStream. Exception message: "
+ ioe.getMessage(),
ioe);
 
}finally {
if (bout != null) {
bout.close();
}
}

}
  

Frank

[Frank Jacobsen]

I found the problem, a strange error tekst, but the system manegers have used a new product called GZIP that comprimize the data between the browser and the webserver, this product works not on opera !

What a wonderfull world !

Frank