diff --git a/common/rfb/CMsgWriterV3.cxx b/common/rfb/CMsgWriterV3.cxx
new file mode 100644
index 0000000..a980795
--- /dev/null
+++ b/common/rfb/CMsgWriterV3.cxx
@@ -0,0 +1,49 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software 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 for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+#include <rdr/OutStream.h>
+#include <rfb/msgTypes.h>
+#include <rfb/Exception.h>
+#include <rfb/ConnParams.h>
+#include <rfb/CMsgWriterV3.h>
+
+using namespace rfb;
+
+CMsgWriterV3::CMsgWriterV3(ConnParams* cp, rdr::OutStream* os)
+  : CMsgWriter(cp, os)
+{
+}
+
+CMsgWriterV3::~CMsgWriterV3()
+{
+}
+
+void CMsgWriterV3::writeClientInit(bool shared)
+{
+  os->writeU8(shared);
+  endMsg();
+}
+
+void CMsgWriterV3::startMsg(int type)
+{
+  os->writeU8(type);
+}
+
+void CMsgWriterV3::endMsg()
+{
+  os->flush();
+}