--- /dev/null	2018-09-16 08:14:05.604314476 -0700
+++ new/src/jdk.net/linux/classes/jdk/internal/net/rdma/RdmaSocketOutputStream.java	2018-10-05 14:14:50.199757112 -0700
@@ -0,0 +1,155 @@
+/*
+ * Copyright (c) 2018, 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.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * 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.
+ */
+
+package jdk.internal.net.rdma;
+
+import java.io.FileDescriptor;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.channels.FileChannel;
+import java.net.Socket;
+import java.net.SocketException;
+
+class RdmaSocketOutputStream extends FileOutputStream
+{
+    static {
+        init();
+    }
+
+    private RdmaSocketImpl impl = null;
+    private byte temp[] = new byte[1];
+    private Socket socket = null;
+
+    RdmaSocketOutputStream(RdmaSocketImpl impl) throws IOException {
+        super(impl.getFileDescriptor());
+        this.impl = impl;
+        socket = impl.getSocket();
+    }
+
+    public final FileChannel getChannel() {
+        return null;
+    }
+
+    /**
+     * Writes to the socket.
+     * @param fd the FileDescriptor
+     * @param b the data to be written
+     * @param off the start offset in the data
+     * @param len the number of bytes that are written
+     * @exception IOException If an I/O error has occurred.
+     */
+    private native void rdmaSocketWrite0(FileDescriptor fd, byte[] b, int off,
+                                         int len) throws IOException;
+
+    /**
+     * Writes to the socket with appropriate locking of the
+     * FileDescriptor.
+     * @param b the data to be written
+     * @param off the start offset in the data
+     * @param len the number of bytes that are written
+     * @exception IOException If an I/O error has occurred.
+     */
+    private void rdmaSocketWrite(byte b[], int off, int len) throws IOException {
+
+
+        if (len <= 0 || off < 0 || len > b.length - off) {
+            if (len == 0) {
+                return;
+            }
+            throw new ArrayIndexOutOfBoundsException("len == " + len
+                    + " off == " + off + " buffer length == " + b.length);
+        }
+
+        FileDescriptor fd = impl.acquireFD();
+        try {
+            rdmaSocketWrite0(fd, b, off, len);
+        } catch (SocketException se) {
+            if (se instanceof sun.net.ConnectionResetException) {
+                impl.setConnectionResetPending();
+                se = new SocketException("Connection reset");
+            }
+            if (impl.isClosedOrPending()) {
+                throw new SocketException("Socket closed");
+            } else {
+                throw se;
+            }
+        } finally {
+            impl.releaseFD();
+        }
+    }
+
+    /**
+     * Writes a byte to the socket.
+     * @param b the data to be written
+     * @exception IOException If an I/O error has occurred.
+     */
+    public void write(int b) throws IOException {
+        temp[0] = (byte)b;
+        rdmaSocketWrite(temp, 0, 1);
+    }
+
+    /**
+     * Writes the contents of the buffer <i>b</i> to the socket.
+     * @param b the data to be written
+     * @exception SocketException If an I/O error has occurred.
+     */
+    public void write(byte b[]) throws IOException {
+        rdmaSocketWrite(b, 0, b.length);
+    }
+
+    /**
+     * Writes <i>length</i> bytes from buffer <i>b</i> starting at
+     * offset <i>len</i>.
+     * @param b the data to be written
+     * @param off the start offset in the data
+     * @param len the number of bytes that are written
+     * @exception SocketException If an I/O error has occurred.
+     */
+    public void write(byte b[], int off, int len) throws IOException {
+        rdmaSocketWrite(b, off, len);
+    }
+
+    /**
+     * Closes the stream.
+     */
+    private boolean closing = false;
+    public void close() throws IOException {
+        if (closing)
+            return;
+        closing = true;
+        if (socket != null) {
+            if (!socket.isClosed())
+                socket.close();
+        } else
+            impl.close();
+        closing = false;
+    }
+
+    /**
+     * Perform class load-time initializations.
+     */
+    private static native void init();
+
+}