Hi all,

I'm developing a server using ServerSocket. For each connection
established with a client, a new thread is created for attending it. The
thread task consists on basically writing data through the socket
continuously. There is no socket reading work in my server.

The point is that I'm not able to detect if the connection with the
client is broken, in order to stop the corresponding thread.

If, for example, the client application is halted suddenly, my server
keeps on writing on the socket although there is nobody listening on the
other side...

I would like to detect the connection failure if the client "dissapears"
for some reason, so that I can stop my thread and act in consecuence.

I've tried with Socket.isConnected, Socket.isClosed and so on...
unsuccessfully.

Here is the code of my server thread:

********************************************

public void run()
{
    PrintWriter writer = new PrintWriter( new OutputStreamWriter (
                     m_socket.getOutputStream()));

    m_socket.setKeepAlive(false);

    while(m_repeat)
    {
        writer.println(data); writer.flush();
        Thread.sleep(500);
        if (!m_socket.isConnected()) m_repeat = false;
    }
    writer.close();
    m_socket.close();
}
**********************************************

Previously I have created a ServerSocket and called accept(), pasing the
new socket to the thread (it is stored in m_socket).

The line using m_socket.isConnected does not work, as I said.

*** Another problem I have is that when I close the connection from the
client by calling Socket.close(), the server keeps on working too! (But
this point is less important for me in this case...)

In summary:

1) How can I detect a connection failure or a client sudden
disconnection from the server?

2) How can I close the connection correctly in the client, so that the
server is notified?

Could anybody help me? Am I doing something wrong?

Thanks in advance,

Matt