--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.jfr/share/classes/jdk/jfr/internal/instrument/SocketOutputStreamInstrumentor.java	Tue May 15 20:24:34 2018 +0200
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2013, 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.jfr.internal.instrument;
+
+import java.io.IOException;
+import java.net.InetAddress;
+
+import jdk.jfr.events.SocketWriteEvent;
+
+/**
+ * See {@link JITracer} for an explanation of this code.
+ */
+@JIInstrumentationTarget("java.net.SocketOutputStream")
+@JITypeMapping(from = "jdk.jfr.internal.instrument.SocketOutputStreamInstrumentor$AbstractPlainSocketImpl",
+            to = "java.net.AbstractPlainSocketImpl")
+final class SocketOutputStreamInstrumentor {
+
+    private SocketOutputStreamInstrumentor() {
+    }
+
+    @SuppressWarnings("deprecation")
+    @JIInstrumentationMethod
+    private void socketWrite(byte b[], int off, int len) throws IOException {
+        SocketWriteEvent event = SocketWriteEvent.EVENT.get();
+        if (!event.isEnabled()) {
+            socketWrite(b, off, len);
+            return;
+        }
+        int bytesWritten = 0;
+        try {
+            event.begin();
+            socketWrite(b, off, len);
+            bytesWritten = len;
+        } finally {
+            event.end() ;
+            if (event.shouldCommit()) {
+                String hostString  = impl.address.toString();
+                int delimiterIndex = hostString.lastIndexOf('/');
+
+                event.host         = hostString.substring(0, delimiterIndex);
+                event.address      = hostString.substring(delimiterIndex + 1);
+                event.port         = impl.port;
+                event.bytesWritten = bytesWritten < 0 ? 0 : bytesWritten;
+
+                event.commit();
+                event.reset();
+            }
+        }
+    }
+
+    private AbstractPlainSocketImpl impl = null;
+
+    void silenceFindBugsUnwrittenField(InetAddress dummy) {
+        impl.address = dummy;
+    }
+
+    static class AbstractPlainSocketImpl {
+        InetAddress address;
+        int port;
+    }
+}