test/java/net/SocketPermission/SocketPermissionTest.java

*** 23,39 ****
--- 23,43 ----
  
  /*
   * @test
   * @bug 8047031
   * @summary SocketPermission tests for legacy socket types
+  * @library /lib/testlibrary
+  * @build jdk.testlibrary.NetworkConfiguration
   * @run testng/othervm SocketPermissionTest
   */
+ 
  import java.io.IOException;
  import java.net.DatagramPacket;
  import java.net.DatagramSocket;
  import java.net.InetAddress;
  import java.net.MulticastSocket;
+ import java.net.NetworkInterface;
  import java.net.ServerSocket;
  import java.net.Socket;
  import java.net.SocketPermission;
  import java.security.AccessControlContext;
  import java.security.AccessController;
*** 42,56 ****
--- 46,63 ----
  import java.security.PermissionCollection;
  import java.security.Permissions;
  import java.security.Policy;
  import java.security.PrivilegedExceptionAction;
  import java.security.ProtectionDomain;
+ import java.util.Optional;
  
  import org.testng.annotations.BeforeMethod;
  import org.testng.annotations.Test;
+ 
  import static org.testng.Assert.*;
  
+ import static jdk.testlibrary.NetworkConfiguration.probe;
  import static java.nio.charset.StandardCharsets.UTF_8;
  
  public class SocketPermissionTest {
  
      @BeforeMethod
*** 208,223 ****
              String addr = "localhost:" + port;
              AccessControlContext acc = getAccessControlContext(
                      new SocketPermission(addr, "listen,resolve"),
                      new SocketPermission("229.227.226.221", "connect,accept"));
  
!             // Positive
              AccessController.doPrivileged((PrivilegedExceptionAction<Void>) () -> {
                  s.joinGroup(group);
                  s.leaveGroup(group);
                  return null;
              }, acc);
  
              // Negative
              try {
                  AccessController.doPrivileged((PrivilegedExceptionAction<Void>) () -> {
                      s.joinGroup(group);
--- 215,235 ----
              String addr = "localhost:" + port;
              AccessControlContext acc = getAccessControlContext(
                      new SocketPermission(addr, "listen,resolve"),
                      new SocketPermission("229.227.226.221", "connect,accept"));
  
!             // Positive ( requires a functional network interface )
!             Optional<NetworkInterface> onif = probe().ip4MulticastInterfaces().findFirst();
!             if (!onif.isPresent()) {
!                 s.setNetworkInterface(onif.get());
! 
                  AccessController.doPrivileged((PrivilegedExceptionAction<Void>) () -> {
                      s.joinGroup(group);
                      s.leaveGroup(group);
                      return null;
                  }, acc);
+             }
  
              // Negative
              try {
                  AccessController.doPrivileged((PrivilegedExceptionAction<Void>) () -> {
                      s.joinGroup(group);