Creating a reliable network connection using WiFi

Hi there,
I have 2 iMacs running Maverick. I have a home Wifi network and I am trying to create a reliable connection between the 2 computers.
The wifi signal at both locations is strong although in 2 different buildings i.e. house and studio.
I currently have them networked but is very unreliable and I am not sure if there is some type of sleep mode or something that cause them to stop communicating.
Basically I go to Finder -> Go -> Connect to Server everytime I need to re-establish the connection.
Ideally I would like the connection to be permanent and auto restore if connection is lost.
Is this possible and could you walk me throught the steps and any settings I should be aware of?
Thanks

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http://www.zaitekdmv.com/

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javax.jcr.RepositoryException: oracle.stellent.ridc.protocol.ProtocolException: java.net.SocketException: Software caused connection abort: recv failed
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     at oracle.jcr.impl.OracleRepositoryImpl.login(OracleRepositoryImpl.java:444)
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     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
     at java.util.concurrent.FutureTask.run(FutureTask.java:138)
     at oracle.webcenter.concurrent.ModifiedThreadPoolExecutor$Worker.runTask(ModifiedThreadPoolExecutor.java:657)
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     ... 15 more
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     at com.sun.net.ssl.internal.ssl.InputRecord.read(InputRecord.java:331)
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:798)
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.waitForClose(SSLSocketImpl.java:1523)
     at com.sun.net.ssl.internal.ssl.HandshakeOutStream.flush(HandshakeOutStream.java:103)
     at com.sun.net.ssl.internal.ssl.Handshaker.sendChangeCipherSpec(Handshaker.java:689)
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     at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverHelloDone(ClientHandshaker.java:904)
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     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:893)
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1138)
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     at com.sun.net.ssl.internal.ssl.AppInputStream.read(AppInputStream.java:75)
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     at oracle.stellent.ridc.protocol.intradoc.HdaProtocol.readResponse(HdaProtocol.java:215)
     ... 17 more
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WARNING: Invalid Configuration Parameters
javax.jcr.RepositoryException: oracle.stellent.ridc.protocol.ProtocolException: java.net.SocketException: Software caused connection abort: recv failed
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     at oracle.stellent.jcr.IdcPersistenceManagerFactory.createPersistenceManager(IdcPersistenceManagerFactory.java:185)
     at oracle.jcr.impl.OracleRepositoryImpl.login(OracleRepositoryImpl.java:444)
     at oracle.vcr.jam.LoginTask.call(LoginTask.java:68)
     at oracle.vcr.jam.LoginTask.call(LoginTask.java:29)
     at oracle.webcenter.concurrent.Submission$2.run(Submission.java:484)
     at java.security.AccessController.doPrivileged(Native Method)
     at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
     at oracle.webcenter.concurrent.Submission.runAsPrivileged(Submission.java:498)
     at oracle.webcenter.concurrent.Submission.run(Submission.java:424)
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     at java.util.concurrent.FutureTask.run(FutureTask.java:138)
     at oracle.webcenter.concurrent.ModifiedThreadPoolExecutor$Worker.runTask(ModifiedThreadPoolExecutor.java:657)
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     at oracle.stellent.ridc.IdcClient.sendRequest(IdcClient.java:165)
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     ... 15 more
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     at java.net.SocketInputStream.socketRead0(Native Method)
     at java.net.SocketInputStream.read(SocketInputStream.java:129)
     at com.sun.net.ssl.internal.ssl.InputRecord.readFully(InputRecord.java:293)
     at com.sun.net.ssl.internal.ssl.InputRecord.read(InputRecord.java:331)
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:798)
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.waitForClose(SSLSocketImpl.java:1523)
     at com.sun.net.ssl.internal.ssl.HandshakeOutStream.flush(HandshakeOutStream.java:103)
     at com.sun.net.ssl.internal.ssl.Handshaker.sendChangeCipherSpec(Handshaker.java:689)
     at com.sun.net.ssl.internal.ssl.ClientHandshaker.sendChangeCipherAndFinish(ClientHandshaker.java:985)
     at com.sun.net.ssl.internal.ssl.ClientHandshaker.serverHelloDone(ClientHandshaker.java:904)
     at com.sun.net.ssl.internal.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:238)
     at com.sun.net.ssl.internal.ssl.Handshaker.processLoop(Handshaker.java:593)
     at com.sun.net.ssl.internal.ssl.Handshaker.process_record(Handshaker.java:529)
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:893)
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1138)
     at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:753)
     at com.sun.net.ssl.internal.ssl.AppInputStream.read(AppInputStream.java:75)
     at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
     at java.io.BufferedInputStream.read(BufferedInputStream.java:237)
     at oracle.stellent.ridc.common.util.StreamUtil.readRawLine(StreamUtil.java:227)
     at oracle.stellent.ridc.common.util.StreamUtil.readLine(StreamUtil.java:254)
     at oracle.stellent.ridc.protocol.intradoc.HdaProtocol.readHeaders(HdaProtocol.java:453)
     at oracle.stellent.ridc.protocol.intradoc.HdaProtocol.readResponse(HdaProtocol.java:215)
     ... 17 more
Please let me know the valid Configuration Parameters?
Thanks,
Manjunath
Edited by: 890922 on Oct 30, 2011 8:25 PM

You need to supply the "Key Store Location", "Key Store Password", "Private Key Alias" and "Private Key Password' to use socketssl.
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import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.bluetooth.*;
import javax.microedition.io.*;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
* @author Zawada
public class MultiClient extends MIDlet implements CommandListener {
    private Display display;
    private Form clientForm;
    private Command exitCommand;
    private LocalDevice local_device;
    private DiscoveryAgent disc_agent;
    private String service_UUID;
    private String player_name;
    private String url;
    private StreamConnectionNotifier notifier;
    private StreamConnection con;
    private InputStream is;
    private OutputStream os;
    private boolean isConnectionActive = false;
    private String message = "5678";
    private Thread dataExchange;
    public MultiClient() {
        display = Display.getDisplay(this);
        clientForm = new Form("Bluetooth Client");
        clientForm.append("Application started\n\n");
        exitCommand = new Command("Exit", Command.EXIT, 1);
        clientForm.addCommand(exitCommand);
        clientForm.setCommandListener(this);
    public void startApp() {
        display.setCurrent(clientForm);
        try {
            setUpClient();
        } catch (IOException ex) {
            ex.printStackTrace();
    public void pauseApp() {
    public void destroyApp(boolean unconditional) {
        isConnectionActive = false;
        if (is != null & os != null & con != null) {
            try {
                // Multiplayer session is stopped: Disconnect the devices
// close input stream
                is.close();
// close output stream
                os.close();
// Close connection
                con.close();
            } catch (IOException ex) {
                ex.printStackTrace();
        notifyDestroyed();
    public void commandAction(Command c, Displayable d) {
        if (c == exitCommand) {
            destroyApp(true);
    private void setUpClient() throws IOException {
        try {
            // Obtain local device object
            local_device = LocalDevice.getLocalDevice();
// Obtain discovery agent object
            disc_agent = local_device.getDiscoveryAgent();
// Set device into limited access mode. Inquiry scan
// will listen only to LIAC.
            local_device.setDiscoverable(DiscoveryAgent.GIAC);
// Do the service search on all found devices.
// Note: dont use this UUID in your own MIDlets.
// You have to create an own UUID for each MIDlet that you write:
            service_UUID = "F0E0D0C0B0A000908070605040302010";
// Retrieve players name
// This could be a name that user has modified and stored to
// non-volatile memory. As default (when game is first started)
// the local friendly name could be chosen.
            player_name = "Ziom";//local_device.getFriendlyName();
// Open connection, note: name is attribute ID 0x0100
            url = "btspp://localhost:" + service_UUID + ";name=" + player_name;
            notifier = (StreamConnectionNotifier) Connector.open(url);
// Wait on someone to connect (note: you can cancel this wait
// only if you call notifier.close() from another thread.
// This is important if you want to offer a UI for the user
// to cancel connections setup.)
            con = (StreamConnection) notifier.acceptAndOpen();
// open input stream
            is = con.openInputStream();
// open output stream
            os = con.openOutputStream();
            clientForm.append("Connection opened\n");
// Devices are connected now:
// Run the game / exchange data ...
            dataExchange = new DataExchange();
            dataExchange.start();
        } catch (BluetoothStateException ex) {
            ex.printStackTrace();
    private class DataExchange extends Thread {
        private byte[] sentData;
        private byte[] receivedData;
        public DataExchange() {
            isConnectionActive = true;
        public void run() {
            int j = 0;
            while (isConnectionActive == true) {
                try {
                    sentData = message.getBytes();
                    os.write(sentData);
                    System.out.println("data written: " + new String(sentData));
//                        clientForm.append("Data sent\n");
                    int lengthavai = 0;
                    //wait till having received data from the server
                    while ((lengthavai = is.available()) <= 0) {
//                        clientForm.append("Waiting for data\n");
                    receivedData = new byte[lengthavai];
                    int length = is.read(receivedData);
                    System.out.println("data read: " + new String(receivedData));
                    clientForm.append(new String(receivedData));
                } catch (IOException ex) {
                    clientForm.append("IO ex\n");
                    ex.printStackTrace();
                j++;
}

Server:
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.Vector;
import javax.bluetooth.*;
import javax.microedition.io.Connector;
import javax.microedition.io.StreamConnection;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
* @author Zawada
public class MultiServer extends MIDlet implements CommandListener {
    private Display display;
    private Form serverForm;
    private Command exitCommand;
    private LocalDevice local_device;
    private String url;
    private StreamConnection[] con;
    private InputStream[] is;
    private OutputStream[] os;
    private String message = "1234";
    private boolean isConnectionActive = false;
    private UUID[] u;
    private int numberOfClients;
    private Thread dataExchange;
    public MultiServer() {
        display = Display.getDisplay(this);
        serverForm = new Form("Bluetooth Server");
        serverForm.append("Application started\n\n");
        exitCommand = new Command("Exit", Command.EXIT, 1);
        serverForm.addCommand(exitCommand);
        serverForm.setCommandListener(this);
    public void startApp() {
        display.setCurrent(serverForm);
        System.out.println("5678".getBytes().length);
        try {
            setUpServer();
        } catch (BluetoothStateException ex) {
            serverForm.append("BT ex\n");
            ex.printStackTrace();
        } catch (InterruptedException ex) {
            serverForm.append("Interr ex\n");
            ex.printStackTrace();
        } catch (IOException ex) {
            serverForm.append("IO ex\n");
            ex.printStackTrace();
    public void pauseApp() {
    public void destroyApp(boolean unconditional) {
        isConnectionActive = false;
// Multiplayer session is stopped: Disconnect the devices
        for (int i = 0; i < numberOfClients; i++) {
            try {
                if (is != null & os != null & con != null) {
// close input stream
                    is.close();
// close output stream
os[i].close();
// Close connection
con[i].close();
} catch (IOException ex) {
ex.printStackTrace();
notifyDestroyed();
public void commandAction(Command c, Displayable d) {
if (c == exitCommand) {
destroyApp(true);
private void setUpServer() throws BluetoothStateException, InterruptedException, IOException {
// Obtain local device object
local_device = LocalDevice.getLocalDevice();
// Obtain discovery agent object
DiscoveryAgent disc_agent = local_device.getDiscoveryAgent();
// Disable page scan and inquiry scan
local_device.setDiscoverable(DiscoveryAgent.NOT_DISCOVERABLE);
// create inquiry listener object
InquiryListener inq_listener = new InquiryListener();
synchronized (inq_listener) {
// start a limited access inquiry and install inquiry listener
disc_agent.startInquiry(DiscoveryAgent.GIAC, inq_listener);
serverForm.append("Inquiry started\n");
// Wait
inq_listener.wait();
serverForm.append("Inquiry ended\n");
// Do the service search on all found devices
u = new UUID[1];
// Note: dont use this UUID in your own MIDlets.
// You have to create an own UUID for each MIDlet that you write:
u[0] = new UUID("F0E0D0C0B0A000908070605040302010", false);
int attrbs[] = {0x0100};
// Retrieved service record should include player
// name (service name)
Enumeration devices = inq_listener.cached_devices.elements();
serverForm.append("Number of devices found: " + inq_listener.cached_devices.size() + "\n");
ServiceListener serv_listener = new ServiceListener();
while (devices.hasMoreElements()) {
synchronized (serv_listener) {
// on each device do a service search
disc_agent.searchServices(attrbs, u, (RemoteDevice) devices.nextElement(), serv_listener);
serverForm.append("Service inquiry started\n");
// Wait
serv_listener.wait();
serverForm.append("Service inquiry ended\n");
// Now all devices which offer the requested service (game)
// can be found in the serv_listener.FoundServiceRecord list.
// This list would now be presented to the user and user can filter
// this list/ select one or more devices to connect to.
// Or in other words: remove all devices from FoundServiceRecords
// list that you don't want to connect to.
// Here we just print all the (remote) player names
numberOfClients = serv_listener.FoundServiceRecords.size();
serverForm.append("Number of clients: " + numberOfClients +"\n");
String player_name;
for (int i = 0; i < numberOfClients; i++) {
// Retrieve player name which is contained as service name
// (0x0100) in the service record
player_name = (String) ((ServiceRecord) serv_listener.FoundServiceRecords.elementAt(i)).getAttributeValue(
0x0100).getValue();
// print name
System.out.println(player_name);
// After filtering these devices will be connected:
con = new StreamConnection[numberOfClients];
is = new InputStream[numberOfClients];
os = new OutputStream[numberOfClients];
for (int i = 0; i < numberOfClients; i++) {
// Retrieve url for one device/service
url = ((ServiceRecord) serv_listener.FoundServiceRecords.elementAt(i)).getConnectionURL(ServiceRecord.AUTHENTICATE_ENCRYPT, false);
// Open connection
con[i] = (StreamConnection) Connector.open(url);
// open input stream
is[i] = con[i].openInputStream();
// open output stream
os[i] = con[i].openOutputStream();
serverForm.append("Connection " + i + " opened\n");
// Devices are connected now:
// Run the game / exchange data ...
dataExchange = new DataExchange();
dataExchange.start();

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