TCP/IP communication with remote host

Question

Hey guys,I wrote a class for TCP/IP communication with remote host.I am trying to use this class in following way:Its not working.One thing I am not sure about if I can give IP address of the machine while creating a socket.Please take a look at my program and let me know where i am doing wrong.Help me!
CommunicationAgent commAgent;
commAgent= new TCPIPCommAgent();
writer = commAgent.getWriter("CASS");
/* Send GC request message to CASS */
writer.print(searchduedateRequestMsg);
/* Get reader object to read TCP IP response from CASS */
reader = commAgent.getReader("CASS");
/* Read response message */
String respMsg = reader.readLine();
if(respMsg!=null)
System.out.println("Search due date Response from CASS is:" +respMsg);
else
System.out.println("Error in reading search due date response");
and here is my class responsible for TCP/IP communication:
* Created on Jul 15, 2004
* To change the template for this generated file go to
* Window>Preferences>Java>Code Generation>Code and Comments
package com.prtc.commif.framework;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Properties;
import com.prtc.commif.framework.interfaces.CommunicationAgent;
import com.prtc.commif.util.InputResources;
* @author spolireddy
* To change the template for this generated type comment go to
* Window>Preferences>Java>Code Generation>Code and Comments
public class TCPIPCommAgent implements CommunicationAgent
public BufferedReader getReader(String system)
InputResources inputResources = new InputResources();
Properties props=inputResources.getProperties(system + ".properties");
Socket socket=null;
BufferedReader in=null;
//Get this from the properties
String hostName = "113.132.192.21";
//Get this from the properties
int port = 10103;
try
socket = new Socket(hostName, port);
in = new BufferedReader(new InputStreamReader(socket.getInputStream()));
catch (UnknownHostException e)
System.err.println("Unable to identify the Host: " + hostName + ":" + port);
System.exit(1);
catch (IOException e)
System.err.println("Couldn't get I/O for the connection to: "     + hostName + ":" + port);
System.exit(1);
return in;
public PrintStream getWriter(String system)
InputResources inputResources = new InputResources();
Properties props=inputResources.getProperties(system + ".properties");
Socket socket=null;
PrintStream out=null;
//Get this from the properties file
String hostName = "113.132.192.21";
//Get this from the properties file
int port = 10103;
try
socket = new Socket(hostName, port);
out = new PrintStream(socket.getOutputStream(), true);
catch (UnknownHostException e)
System.err.println("Unable to identify the Host: " + hostName + ":" + port);
System.exit(1);
catch (IOException e)
System.err.println("Couldn't get I/O for the connection to: "     + hostName + ":" + port);
System.exit(1);
return out;

Answer 1

Hi,
Yes, you can specify ip-address as host-address.
What do you expect the class to do? Why does reader and writer both open sockets?
What happens when you run the program?
/Kaj