// RUN METHOD
public void run() {
for (int x = 0; x <= 3; x++) {
selected[x] = false;
questions[x] = "";
}
// Create new lists for the clients and threads
if (clientSocketList == null || !clientSocketList.isEmpty()) {
clientSocketList = new Vector<ClientConnection>();
}
if (clientThreadList == null || !clientThreadList.isEmpty()) {
clientThreadList = new Vector<Thread>();
}
// Now we're ready to go
isRunning = true;
stopPressed = false;
// Server initialization
parent.updateStatusBox("SERVER ONLINE");
parent.setStatus(new Color(32, 160, 32), "ONLINE");
parent.setButtonEnabled(parent.STOP_BUTTON, true);
Socket clientSocket = null;
// SERVER CONNECTION LOOP AND CLIENT THREAD GENERATION
while (!stopPressed) {
try {
// Create a new socket and wait for a client connection
parent.updateStatusBox("Listening for clients on port: " + String.valueOf(port));
serverSocket = new ServerSocket(port);
clientSocket = serverSocket.accept();
// Once a connection is established, we pass it off to clientConnected, which creates a new
// thread
// to manage this client
clientConnected(clientSocket);
} catch (IOException e) {
// No need to implement anything here -- cleanup is taken care of outside the loop
// TODO: Move cleanup to a FINALLY block
parent.updateStatusBox(e.getMessage());
} finally {
try {
if (serverSocket != null) {
serverSocket.close();
}
} catch (IOException e) {
parent.updateStatusBox(e.getMessage());
}
}
}
// We're responsible adults...once we leave the server connection loop, we need to clean up
// (close all
// connections) before we can officially stop the server.
parent.updateStatusBox("Stopping server...");
// Instead of locking clientSocketList inside of a huge synchronized block, just make a copy of
// it
// This is a good idea because as clients disconnect, they will be asking to remove
// themselves from
// the clientSocketList, and we don't want them to wait
Vector<ClientConnection> snapshot = new Vector<ClientConnection>();
snapshot.addAll(clientSocketList);
Iterator<ClientConnection> clientIterator = snapshot.iterator();
ClientConnection clientConnection;
// This loop iterates through all of the currently connected clients and disconnects them
while (clientIterator.hasNext()) {
clientConnection = clientIterator.next();
parent.updateStatusBox("Stopping client from ServerRunnable Loop");
disconnectClient(clientConnection);
}
snapshot.clear();
// Once we've cleaned up, we let the user know that the server is down and re-enable the Start
// Server button
parent.updateStatusBox("\nSERVER SHUTDOWN COMPLETE");
parent.setStatus(Color.RED, "OFFLINE");
isRunning = false;
parent.setButtonEnabled(parent.GO_BUTTON, true);
}
