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Thread: Problem connecting socket to port

  1. #1
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    Default Problem connecting socket to port

    I keep getting an error when I try to connect my client to my server
    It times out and wont connect giving the standard IOException
    Server
    import javax.swing.JFrame;
    import javax.swing.JOptionPane;
    import javax.swing.JTextArea;
    public class Server{
    	@SuppressWarnings("deprecation")
    	public static void main(String args[]){
    		String line;
    		JFrame frame = new JFrame("Server");
    		JTextArea text = new JTextArea();
    		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    		frame.setSize(300,300);
    		frame.add(text);
    		frame.setVisible(true);
     
    		ServerSocket ss;
    		Socket       cs = null;
    		DataInputStream input;
    		DataOutputStream output;
     
    		try {
    			ss= new ServerSocket(2272);
    			text.append("Server Created\n");
    			text.append("Server Adress:"+ss.getInetAddress().toString()+"\n");
    			text.append("port:"+ss.getLocalPort()+"\n");
    			text.append("Waiting for connection\n");
    			cs = ss.accept();
    		} catch (IOException e) {
    			text.append("IOException\n");
    			e.printStackTrace();
    		}
    		if(cs.isConnected()){
    			text.append("Connected");
    		}
    	}
    }
    Client code
    import java.awt.BorderLayout;
    import java.awt.Color;
    import java.awt.event.ActionEvent;
    import java.awt.event.ActionListener;
    import java.io.DataInputStream;
    import java.io.DataOutputStream;
    import java.io.IOException;
    import java.net.InetSocketAddress;
    import java.net.Socket;
    import java.net.UnknownHostException;
     
    import javax.swing.JButton;
    import javax.swing.JFrame;
    import javax.swing.JPanel;
    import javax.swing.JTextArea;
    import javax.swing.JTextField;
     
    public class clientOne implements ActionListener{
    	Socket clientSocket = null;
    	JFrame frame;
    	JTextArea ta;
    	JTextField tf;
    	JPanel jp;
    	JButton eb;
    	DataInputStream input = null;
    	DataOutputStream output;
    	public clientOne(){
    		eb = new JButton("Enter");
    		eb.addActionListener(this);
    		ta = new JTextArea();
    		ta.setBackground(Color.black);
    		ta.setForeground(Color.WHITE);
    		ta.setEditable(false);
    		tf = new JTextField();
    		tf.setBackground(Color.WHITE);
    		jp = new JPanel();
    		jp.setLayout(new BorderLayout());
    		jp.add(tf,BorderLayout.CENTER);
    		jp.add(eb,BorderLayout.EAST);
    		frame = new JFrame("clientOne");
    		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    		frame.setSize(300,300);
    		frame.setLayout(new BorderLayout());
    		frame.add(ta,BorderLayout.CENTER);
    		frame.add(jp,BorderLayout.SOUTH);
    		frame.setVisible(true);
    		connect();
    	}
    	private void connect(){
    		ta.append("Connecting\n");
    		try {
    			clientSocket=new Socket();
    			clientSocket.connect(new InetSocketAddress(ip, 2272));
    			ta.append("Connected\n");
    		} catch (UnknownHostException e) {
    			ta.append("Unkown Host\n");
    		} catch (SecurityException e) {
    			ta.append("Security error\n");
    		} catch (IOException e) {
    			ta.append("Some other error\n");
    			connect();
    		}catch (NullPointerException e){
    			ta.append("Address is null\n");
    		}
    	}
    	public static void main(String[] args){
    		new clientOne();
    	}
    	@Override
    	public void actionPerformed(ActionEvent evt) {
    		if(evt.getSource() == eb){
    				if(clientSocket!=null){
    					try {
    						output.writeChars(tf.getText());
    						output.close();
    					} catch (IOException e) {
    						// TODO Auto-generated catch block
    						e.printStackTrace();
    					}
    				}
    				else{
    						System.out.println("error");
    					}			
    			}
    		}
    }
    When creating the socket I also have done
    myClient = new Socket(ip,port)
    If anyone could please help me trouble shoot i would be extremly grateful


  2. #2
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    Default Re: Problem connecting socket to port

    Thread moved.

  3. #3
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    Default Re: Problem connecting socket to port

    Please copy the full text of the error message and paste it here. It has important info about the error.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Problem connecting socket to port

    java.net.ConnectException: Connection timed out: connect
    at java.net.TwoStacksPlainSocketImpl.socketConnect(Na tive Method)
    at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
    at java.net.AbstractPlainSocketImpl.connectToAddress( Unknown Source)
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
    at java.net.PlainSocketImpl.connect(Unknown Source)
    at java.net.SocksSocketImpl.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at java.net.Socket.connect(Unknown Source)
    at clientOne.connect(clientOne.java:53)
    at clientOne.<init>(clientOne.java:47)
    at clientOne.main(clientOne.java:67)

  5. #5
    Super Moderator Norm's Avatar
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    Default Re: Problem connecting socket to port

    The posted code has compiler errors: definition of the variable: ip missing.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Problem connecting socket to port

    So does that mean my ip is wrong?Also I have also tried the hostname instead of ip
    Last edited by Daryn; June 15th, 2014 at 04:51 PM.

  7. #7
    Super Moderator Norm's Avatar
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    Default Re: Problem connecting socket to port

    Try compiling the code that was posted. It has compiler errors that need to be fixed.
    If you don't understand my answer, don't ignore it, ask a question.

  8. #8
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    Default Re: Problem connecting socket to port

    cause i took out the ip and put in the word ip. But i replced ip with
    (new InetAdress.getLocalHost(),portNumber)

  9. #9
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    Default Re: Problem connecting socket to port

    That code does not compile. Please post the code you are using for testing.
    If you don't understand my answer, don't ignore it, ask a question.

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