Hi,
I have a servlet which processes a request for a long time. It suppose
to keep doing stuff in the loop inside doPost and send data through
response's out writer. Effectively that continuously appends data in
the clients browser .
But the problems accures when client just closes the browser. Inspite
of the broken connection the response's writer stream in the servlet
never gets closed, thus servlet is unaware of the brocen connection,
and keep dumping data into the writer without any errors. How is that
posssible? And how do I detect and cancel long request processing in
case of browser disconnect?
This is the servlet code which never stops:
protected void processRequest(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException
{
HttpSession session = request.getSession();
System.out.println("Session " + session.getId() + " started");
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try
{
while (!out.checkError())
{
try
{
Thread.sleep(1000);
} catch (InterruptedException ex)
{
ex.printStackTrace();
}
Date date = new Date();
// TODO append output to the client browser here
out.println(".....");
System.out.println("Session " + session.getId() + "
data sent at: " + date);
out.flush();
//break; // _TEST
}
} finally
{
System.out.println("Session " + session.getId() + " finished");
out.close();
}
}
Thanks,
Mike
--
Best regards,
Mikhail Gerdov mailto:ger...@gmail.com
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