private ServerSocketChannel createReceiverSocket() throws IOException {
    final ServerSocketChannel acceptorSocket = ServerSocketChannel.open();
    acceptorSocket.bind(new InetSocketAddress(InetAddress.getLocalHost(), 0));
    return acceptorSocket;
  }
Creates a socket for the receiver side. This is the server socket listening for connections.
geode-core/src/test/java/org/apache/geode/internal/tcp/ConnectionTransmissionTest.java