Only one receiver in local communication via socket

Question

I am simulating a network of 4 nodes that exchange messages between each other on localhost.
Each node has two threads: Sender thread and Receiver thread that use DatagramSocket for communications:
For the Sender socket:
DatagramSocket sock_sender = new DatagramSocket(null);
          sock_sender.setReuseAddress(true);
DatagramPacket dp = new DatagramPacket(buffer, buffer.length,
                         InetAddress.getByName("localhost"), PortA);
Now for the receiver socket,
DatagramSocket sock_recev = new DatagramSocket(null);
          sock_recev.setReuseAddress(true);
          sock_recev.bind( new InetSocketAddress (InetAddress.getByName("localhost"),PortA)
To conclude, I have multiple receivers that listen to the same remote port.
The issue now is that only one node can receive data from other sender processes!
Is there any idea about the reason of this issue and how to process to avoid it?

Answer 1

If they all use the same address and port all the receivers should see the same packets, including their own.
Have you considered using a multicast address?