ADDITIONAL SYSTEM INFORMATION :
Windows/Linux
JDK 21/22

A DESCRIPTION OF THE PROBLEM :

The call to DatagramSocket.connect() throws an exception when port=0.
The parameter port=0 should be possible (as a wildcard) if one wants to receive UDP packets from a particular host without specifying the source port.
Parameter Port=0 was possible in JDK8 and JDK11.
The underlying OS layers allow port=0 at least on Windows, Linux and BSD.

The exception should only be thrown when one tries to send a datagram.
As long as one only wants to receive datagrams , connect() with port=0 should be accepted.

REGRESSION : Last worked in version 11.0.23

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
- create a DatagramSocket bound to any local port.
- try to connect to a remote host, with port=0

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The call to connect() should succeed.
ACTUAL -
An exception is thrown:
Exception in thread "main" java.io.UncheckedIOException: java.net.SocketException: Can't connect to port 0


---------- BEGIN SOURCE ----------
import java.net.*;

public class T
{

    static public void main(String [] args) throws SocketException, UnknownHostException, InterruptedException
    {
        DatagramSocket T=new DatagramSocket(12345);
        T.connect(InetAddress.getByName("192.168.0.2"),0);
        System.out.println("Pass");
    }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
No work around found.


FREQUENCY : always