Java ServerSocket getLocalSocketAddress() Method

The getLocalSocketAddress() method of ServerSocket class returns the address of the endpoint to which this socket is bound to, otherwise returns null if it is not bound yet. If the socket was bound before being closed, then this method will continue to return the address of the endpoint after the socket is closed.

Syntax

Returns:

A SocketAddress representing the local endpoint of this socket, or null if it is not bound yet.

Since:

1.4

Example 1

ServerApplication:

import java.io.IOException;
import java.net.InetAddress;
import java.net.ServerSocket;
import java.net.Socket;

public class LocalSocketAddressExample1{	
	public static void main(String[] args) {
	      try {
	         ServerSocket server = new ServerSocket(8888);
	         while (true) {
	            System.out.println("Listening");
	            Socket s = server.accept();
	            System.out.println("The LocalSocketAddress is " +s.getLocalSocketAddress());
	            pause(1000);//Static Method called
	            s.close();
	         }
	      } 
	         catch (IOException e) {
	         System.out.println(" Input/Output Exception occurred: " + e);
	      }
	   }




	   private static void pause(int ms) {
	      try {
	         Thread.sleep(ms);
	      }catch (InterruptedException e) {}
	   }
	}

ClientApplication:

import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;

public class ClientApplication {

	public static void main(String arg[]) throws UnknownHostException,IOException
	{
	Socket s=new Socket("127.0.0.1",1408);
	System.out.println("Connected on Port " + s.getPort() + "...");
	}
}

Output:

Java ServerSocket getLocalSocketAddress() Method

Example 2

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.net.Socket;
import java.io.*;
public class LocalSocketAddressExample2 {
 public static void main(String[] args) throws Exception {
		    String serverName = args[0];
		    int port = Integer.parseInt(args[1]);
		    try {
		      System.out.println("Connecting to " + serverName + " on port " + port);
		      Socket client = new Socket(serverName, port);
 System.out.println("Just connected to RemoteSocket " + client.getRemoteSocketAddress());
		      System.out.println("Local Socket Address "+client.getLocalSocketAddress());
		      client.close();
		    } catch (IOException e) {
		      e.printStackTrace();
		    }
		  }
		}