--- a/jdk/src/share/classes/sun/nio/ch/SocketChannelImpl.java	Wed Jul 21 13:52:38 2010 +0100
+++ b/jdk/src/share/classes/sun/nio/ch/SocketChannelImpl.java	Wed Jul 21 18:08:46 2010 +0100
@@ -498,6 +498,36 @@
         return write0(Util.subsequence(srcs, offset, length));
     }
 
+    // package-private
+    int sendOutOfBandData(byte b) throws IOException {
+        synchronized (writeLock) {
+            ensureWriteOpen();
+            int n = 0;
+            try {
+                begin();
+                synchronized (stateLock) {
+                    if (!isOpen())
+                        return 0;
+                    writerThread = NativeThread.current();
+                }
+                for (;;) {
+                    n = sendOutOfBandData(fd, b);
+                    if ((n == IOStatus.INTERRUPTED) && isOpen())
+                        continue;
+                    return IOStatus.normalize(n);
+                }
+            } finally {
+                writerCleanup();
+                end((n > 0) || (n == IOStatus.UNAVAILABLE));
+                synchronized (stateLock) {
+                    if ((n <= 0) && (!isOutputOpen))
+                        throw new AsynchronousCloseException();
+                }
+                assert IOStatus.check(n);
+            }
+        }
+    }
+
     protected void implConfigureBlocking(boolean block) throws IOException {
         IOUtil.configureBlocking(fd, block);
     }
@@ -957,6 +987,9 @@
                                            boolean block, boolean ready)
         throws IOException;
 
+    private static native int sendOutOfBandData(FileDescriptor fd, byte data)
+        throws IOException;
+
     static {
         Util.load();
         nd = new SocketDispatcher();