8071599: (so) Socket adapter sendUrgentData throws IllegalBlockingMode when...

8071599: (so) Socket adapter sendUrgentData throws IllegalBlockingMode when channel configured non-blocking
Summary: Remove restriction to blocking case
Reviewed-by: alanb, chegar

src/share/classes/sun/nio/ch/SocketAdaptor.java

 /*
- * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2015, 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
@@ -321,12 +321,9 @@ public class SocketAdaptor
     }
 
     public void sendUrgentData(int data) throws IOException {
-        synchronized (sc.blockingLock()) {
-            if (!sc.isBlocking())
-                throw new IllegalBlockingModeException();
-            int n = sc.sendOutOfBandData((byte)data);
-            assert n == 1;
-        }
+        int n = sc.sendOutOfBandData((byte) data);
+        if (n == 0)
+            throw new IOException("Socket buffer full");
     }
 
     public void setOOBInline(boolean on) throws SocketException {

test/java/nio/channels/SocketChannel/OutOfBand.java

 /*
- * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2015, 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
@@ -58,8 +58,6 @@ public class OutOfBand {
             test1(sc1, sc2);
             test2(sc1, sc2);
             test3(sc1, sc2);
-            test4(sc1);
-
         } finally {
             if (sc1 != null) sc1.close();
             if (sc2 != null) sc2.close();
@@ -175,17 +173,4 @@ public class OutOfBand {
 
         thr.join();
     }
-
-    static void test4(SocketChannel sc) throws IOException {
-        boolean blocking = sc.isBlocking();
-        sc.configureBlocking(false);
-        try {
-            sc.socket().sendUrgentData(0);
-            throw new RuntimeException("IllegalBlockingModeException expected");
-        } catch (IllegalBlockingModeException x) {
-            // expected
-        } finally {
-            sc.configureBlocking(blocking);
-        }
-    }
 }

test/java/nio/channels/SocketChannel/SendUrgentData.java

+/*
+ * Copyright (c) 2015, 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 8071599
+ * @run main/othervm SendUrgentData
+ * @run main/othervm SendUrgentData -inline
+ * @summary Test sending of urgent data.
+ */
+
+import java.io.IOException;
+import java.net.InetSocketAddress;
+import java.net.SocketAddress;
+import java.net.SocketException;
+import java.nio.ByteBuffer;
+import java.nio.channels.ServerSocketChannel;
+import java.nio.channels.SocketChannel;
+
+public class SendUrgentData {
+
+    /**
+     * The arguments may be one of the following:
+     * <ol>
+     * <li>-server</li>
+     * <li>-client host port [-inline]</li>
+     * <li>[-inline]</li>
+     * </ol>
+     * The first option creates a standalone server, the second a standalone
+     * client, and the third a self-contained server-client pair on the
+     * local host.
+     *
+     * @param args
+     * @throws Exception
+     */
+    public static void main(String[] args) throws Exception {
+
+        ServerSocketChannelThread serverThread
+                = new ServerSocketChannelThread("SendUrgentDataServer");
+        serverThread.start();
+        boolean b = serverThread.isAlive();
+
+        String host = null;
+        int port = 0;
+        boolean inline = false;
+        if (args.length > 0 && args[0].equals("-server")) {
+            System.out.println(serverThread.getAddress());
+            Thread.currentThread().suspend();
+        } else {
+            if (args.length > 0 && args[0].equals("-client")) {
+                host = args[1];
+                port = Integer.parseInt(args[2]);
+                if (args.length > 3) {
+                    inline = args[2].equals("-inline");
+                }
+            } else {
+                host = "localhost";
+                port = serverThread.getAddress().getPort();
+                if (args.length > 0) {
+                    inline = args[0].equals("-inline");
+                }
+            }
+        }
+
+        System.out.println("OOB Inline : "+inline);
+
+        SocketAddress sa = new InetSocketAddress(host, port);
+
+        try (SocketChannel sc = SocketChannel.open(sa)) {
+            sc.configureBlocking(false);
+            sc.socket().setOOBInline(inline);
+
+            sc.socket().sendUrgentData(0);
+            System.out.println("wrote 1 OOB byte");
+
+            ByteBuffer bb = ByteBuffer.wrap(new byte[100 * 1000]);
+
+            int blocked = 0;
+            long total = 0;
+
+            int n;
+            do {
+                n = sc.write(bb);
+                if (n == 0) {
+                    System.out.println("blocked, wrote " + total + " so far");
+                    if (++blocked == 10) {
+                        break;
+                    }
+                    Thread.sleep(100);
+                } else {
+                    total += n;
+                    bb.rewind();
+                }
+            } while (n > 0);
+
+            long attempted = 0;
+            while (attempted < total) {
+                bb.rewind();
+                n = sc.write(bb);
+                System.out.println("wrote " + n + " normal bytes");
+                attempted += bb.capacity();
+
+                String osName = System.getProperty("os.name").toLowerCase();
+
+                try {
+                    sc.socket().sendUrgentData(0);
+                } catch (IOException ex) {
+                    if (osName.contains("linux")) {
+                        if (!ex.getMessage().contains("Socket buffer full")) {
+                            throw new RuntimeException("Unexpected message", ex);
+                        }
+                    } else if (osName.contains("os x") || osName.contains("mac")) {
+                        if (!ex.getMessage().equals("No buffer space available")) {
+                            throw new RuntimeException("Unexpected message", ex);
+                        }
+                    } else if (osName.contains("windows")) {
+                        if (!(ex instanceof SocketException)) {
+                            throw new RuntimeException("Unexpected exception", ex);
+                        } else if (!ex.getMessage().contains("Resource temporarily unavailable")) {
+                            throw new RuntimeException("Unexpected message", ex);
+                        }
+                    } else {
+                        throw new RuntimeException("Unexpected IOException", ex);
+                    }
+                }
+
+                try {
+                    Thread.sleep(100);
+                } catch (InterruptedException ex) {
+                    // don't want to fail on this so just print trace and break
+                    ex.printStackTrace();
+                    break;
+                }
+            }
+        } finally {
+            serverThread.close();
+        }
+    }
+
+    static class ServerSocketChannelThread extends Thread {
+
+        private ServerSocketChannel ssc;
+
+        private ServerSocketChannelThread(String name) {
+            super(name);
+            try {
+                ssc = ServerSocketChannel.open();
+                ssc.bind(new InetSocketAddress((0)));
+            } catch (IOException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+
+        public void run() {
+            while (ssc.isOpen()) {
+                try {
+                    Thread.sleep(100);
+                } catch (InterruptedException ex) {
+                    throw new RuntimeException(ex);
+                }
+            }
+            try {
+                ssc.close();
+            } catch (IOException ex) {
+                throw new RuntimeException(ex);
+            }
+            System.out.println("ServerSocketChannelThread exiting ...");
+        }
+
+        public InetSocketAddress getAddress() throws IOException {
+            if (ssc == null) {
+                throw new IllegalStateException("ServerSocketChannel not created");
+            }
+
+            return (InetSocketAddress) ssc.getLocalAddress();
+        }
+
+        public void close() {
+            try {
+                ssc.close();
+            } catch (IOException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
+    }
+}