test/jdk/java/net/NetworkInterface/NoSetNetworkInterface.java
changeset 59313 6f12009ea9d7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/net/NetworkInterface/NoSetNetworkInterface.java	Thu Nov 28 16:49:52 2019 +0000
@@ -0,0 +1,147 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8233307
+ * @library /test/lib
+ * @run main/othervm NoSetNetworkInterface
+ * @run main/othervm -Djava.net.preferIPv4Stack=true NoSetNetworkInterface
+ * @run main/othervm -Djava.net.preferIPv6Addresses=true NoSetNetworkInterface
+ * @summary Check that methods that are used to set and get the NetworkInterface
+ *  for a MulticastSocket work as expected. This test also checks that getOption
+ *  returns null correctly when a NetworkInterface has not been set
+ */
+
+import jdk.test.lib.NetworkConfiguration;
+
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.net.InetAddress;
+import java.net.MulticastSocket;
+import java.net.NetworkInterface;
+import java.net.StandardSocketOptions;
+import java.util.Optional;
+import java.util.function.Predicate;
+
+public class NoSetNetworkInterface {
+    public static void main(String[] args) throws Exception {
+
+        NetworkConfiguration nc = NetworkConfiguration.probe();
+
+        // check set and get methods work as expected
+        nc.multicastInterfaces(true).forEach(ni -> {
+            checkSetInterface(ni);
+            checkSetNetworkInterface(ni);
+            checkSetOption(ni);
+        });
+
+        // Check that dummy NetworkInterface is returned when not set
+        checkDummyNetworkInterface();
+    }
+
+    public static void checkSetInterface(NetworkInterface ni) {
+        try (MulticastSocket ms = new MulticastSocket()) {
+            Optional<InetAddress> iAddr = ni.inetAddresses()
+                    .filter(Predicate.not(InetAddress::isAnyLocalAddress))
+                    .findFirst();
+            if (iAddr.isPresent()) {
+                ms.setInterface(iAddr.get());
+                checkForCorrectNetworkInterface("setInterface", ms, ni);
+            }
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
+    }
+
+    public static void checkSetNetworkInterface(NetworkInterface ni) {
+        try (MulticastSocket ms = new MulticastSocket()) {
+            ms.setNetworkInterface(ni);
+            checkForCorrectNetworkInterface("setNetworkInterface", ms, ni);
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
+    }
+
+    public static void checkSetOption(NetworkInterface ni) {
+        try (MulticastSocket ms = new MulticastSocket()) {
+            ms.setOption(StandardSocketOptions.IP_MULTICAST_IF, ni);
+            checkForCorrectNetworkInterface("setOption", ms, ni);
+        } catch (IOException e) {
+            throw new UncheckedIOException(e);
+        }
+    }
+
+    public static void checkForCorrectNetworkInterface(String setterMethod,
+                                                       MulticastSocket ms,
+                                                       NetworkInterface ni) throws IOException {
+
+        // getInterface
+        InetAddress testAddr = ms.getInterface();
+        if (!ni.inetAddresses().anyMatch(i -> i.equals(testAddr))) {
+            throw new RuntimeException(setterMethod + " != getInterface");
+        }
+
+        // getNetworkInterface
+        if (!ni.equals(ms.getNetworkInterface())) {
+            throw new RuntimeException(setterMethod + " != getNetworkInterface");
+        }
+
+        // getOption
+        if (!ni.equals(ms.getOption(StandardSocketOptions.IP_MULTICAST_IF))) {
+            throw new RuntimeException(setterMethod + " != getOption");
+        }
+    }
+
+    public static void checkDummyNetworkInterface() throws IOException {
+
+        try(MulticastSocket ms = new MulticastSocket()) {
+
+            // getOption with no Network Interface set
+            NetworkInterface n0 = ms.getOption(StandardSocketOptions.IP_MULTICAST_IF);
+            if (n0 != null) {
+                throw new RuntimeException("NetworkInterface should be null");
+            }
+
+            // getNetworkInterface with no Network Interface set
+            NetworkInterface n1 = ms.getNetworkInterface();
+            if (n1 == null) {
+                throw new RuntimeException("getNetworkInterface() should not return null");
+            } else if (!((n1.getName().equals("0.0.0.0") || n1.getName().equals("::"))
+                    && (n1.getIndex() == 0)
+                    && (n1.inetAddresses().count() == 1))) {
+
+                throw new RuntimeException("Dummy NetworkInterface not returned as expected");
+            }
+
+            // getInterface with no Network Interface set
+            InetAddress iaddr = ms.getInterface();
+            if (iaddr == null) {
+                throw new RuntimeException("getInterface() should not return null");
+            } else if (!iaddr.isAnyLocalAddress()) {
+                throw new RuntimeException("getInterface() should return anyLocalAddress");
+            }
+        }
+    }
+}
+