Codename one java.net.SocketTimeoutException

Question

I'm working on a project on Codename One in which I need to check certain addresses. If the address doesn't exist, a variable in my code, named lectura should be 404. However when I find an address which doesn't exist, my code stops and displays a message on screen thats says java.net.SocketTimeoutException with the options cancel or retry. I need my program to know the address didn't exist and to move on, not to pause. My code is:

public int readCNO(String cantidad, int number){


    ConnectionRequest r3 = new ConnectionRequest();
    r3.setUrl("http://" + ipZona + "/arduino/" + cantidad + "!" + type + "/" + Integer.toString(number));

    r3.setPost(false);
    r3.setDuplicateSupported(true);
    r3.setTimeout(100);
    NetworkManager.getInstance().addToQueueAndWait(r3);
    r3.addResponseListener(new ActionListener()
    {

        public void actionPerformed(ActionEvent ev)
        {
            try
            {
                NetworkEvent event = (NetworkEvent) ev;
                byte[] data= (byte[]) event.getMetaData();
                String decodedData = new String(data,"UTF-8");
                System.out.println(decodedData);
                lectura = Integer.parseInt(decodedData.trim());

            } catch (Exception e)
            {
                //ex.printStackTrace();
                lectura = 404;
            }

        }


    });
    NetworkManager.getInstance().addToQueue(r3);
    //NetworkManager.getInstance().killAndWait(r3);



    return lectura;
}

Help really appreciated!

David.

The complete exception is shown afterwards, but It doesn't refer to any of my classes, not where the code above is, nor where it is called.

java.net.SocketTimeoutException: connect timed out
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:579)
    at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
    at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
    at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
    at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)
    at sun.net.www.http.HttpClient.New(HttpClient.java:308)
    at sun.net.www.http.HttpClient.New(HttpClient.java:326)
    at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:996)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:932)
    at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:850)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1300)
    at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468)
    at com.codename1.impl.javase.JavaSEPort.getResponseCode(JavaSEPort.java:4557)
    at com.codename1.io.ConnectionRequest.performOperation(ConnectionRequest.java:330)
    at com.codename1.io.NetworkManager$NetworkThread.run(NetworkManager.java:261)
    at com.codename1.impl.CodenameOneThread.run(CodenameOneThread.java:176)
java.net.SocketTimeoutException: connect timed out
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:579)
    at sun.net.NetworkClient.doConnect(NetworkClient.java:175)
    at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
    at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
    at sun.net.www.http.HttpClient.<init>(HttpClient.java:211)
    at sun.net.www.http.HttpClient.New(HttpClient.java:308)
    at sun.net.www.http.HttpClient.New(HttpClient.java:326)
    at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:996)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:932)
    at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:850)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1300)
    at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468)
    at com.codename1.impl.javase.JavaSEPort.getResponseCode(JavaSEPort.java:4557)
    at com.codename1.io.ConnectionRequest.performOperation(ConnectionRequest.java:330)
    at com.codename1.io.NetworkManager$NetworkThread.run(NetworkManager.java:261)
    at com.codename1.impl.CodenameOneThread.run(CodenameOneThread.java:176)

Answer 1

I solved my problem with an answer from this post catching unknown host exception in codename one, the code is:

NetworkManager.getInstance().addErrorListener(new ActionListener() {
    public void actionPerformed(ActionEvent evt) {
        //handle your error here consume the event
        evt.consume();
    }
});