Thread: Bind Exception when trying with Ipv6 and DatagramPackets

Hello everyone ,

I am trying to do a program with IPv6 socket, when i tried to bind the socket with TCP , i was getting no problem , but when trying to bind with UDP (DatagramSocket ) i am getting exception as java.net.SocketException: already bound ( what ever port im giving im getting same problem ).
I m unable to solve this ....can any one help regarding this ....Thanks in advance.

The code is

import java.net.DatagramSocket;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
 
class Post {
    static public void main(String[] s) {
        try {
            byte[] addr = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,1};
 
            InetAddress inetAddr = Inet6Address.getByAddress(addr);
            System.out.println(inetAddr.getHostAddress());
            InetSocketAddress addr_8501 = new InetSocketAddress(inetAddr,8501);
            ServerSocket serverSocket = new ServerSocket();
            serverSocket.bind(addr_8501); // This works fine 
 
            for ( ; ; )
            {
            	serverSocket.accept();
	    }
 
        } catch (Throwable t) {
            t.printStackTrace();
        }
    }
}

this code worked fine when used with TCP connections ..... but when used Datagram Sockets(UDP) getting problem .....

 
import java.net.DatagramSocket;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.ServerSocket;
 
class Post {
    static public void main(String[] s) {
        try {
            byte[] addr = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,1};
 
            InetAddress inetAddr = Inet6Address.getByAddress(addr);
            System.out.println(inetAddr.getHostAddress());
            InetSocketAddress addr_8502 = new InetSocketAddress(inetAddr,8502);
 
            DatagramSocket serverSocket = new DatagramSocket();
            serverSocket.bind(addr_8502); 
 
        } catch (Throwable t) {
            t.printStackTrace();
        }
    }
}

getting exception as

java.net.SocketException: already bound
at java.net.DatagramSocket.bind(Unknown Source)
at Post.main(Post.java:23)