diff --git a/common/rfb/ClientParams.h b/common/rfb/ClientParams.h
new file mode 100644
index 0000000..6b36895
--- /dev/null
+++ b/common/rfb/ClientParams.h
@@ -0,0 +1,121 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * Copyright 2014-2018 Pierre Ossman for Cendio AB
+ * 
+ * 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.
+ */
+//
+// ClientParams - structure describing the current state of the remote client
+//
+
+#ifndef __RFB_CLIENTPARAMS_H__
+#define __RFB_CLIENTPARAMS_H__
+
+#include <set>
+
+#include <rdr/types.h>
+#include <rfb/Cursor.h>
+#include <rfb/PixelFormat.h>
+#include <rfb/ScreenSet.h>
+
+namespace rfb {
+
+  const int subsampleUndefined = -1;
+  const int subsampleNone = 0;
+  const int subsampleGray = 1;
+  const int subsample2X = 2;
+  const int subsample4X = 3;
+  const int subsample8X = 4;
+  const int subsample16X = 5;
+
+  class ClientParams {
+  public:
+    ClientParams();
+    ~ClientParams();
+
+    int majorVersion;
+    int minorVersion;
+
+    void setVersion(int major, int minor) {
+      majorVersion = major; minorVersion = minor;
+    }
+    bool isVersion(int major, int minor) const {
+      return majorVersion == major && minorVersion == minor;
+    }
+    bool beforeVersion(int major, int minor) const {
+      return (majorVersion < major ||
+              (majorVersion == major && minorVersion < minor));
+    }
+    bool afterVersion(int major, int minor) const {
+      return !beforeVersion(major,minor+1);
+    }
+
+    const int width() const { return width_; }
+    const int height() const { return height_; }
+    const ScreenSet& screenLayout() const { return screenLayout_; }
+    void setDimensions(int width, int height);
+    void setDimensions(int width, int height, const ScreenSet& layout);
+
+    const PixelFormat& pf() const { return pf_; }
+    void setPF(const PixelFormat& pf);
+
+    const char* name() const { return name_; }
+    void setName(const char* name);
+
+    const Cursor& cursor() const { return *cursor_; }
+    void setCursor(const Cursor& cursor);
+
+    bool supportsEncoding(rdr::S32 encoding) const;
+
+    void setEncodings(int nEncodings, const rdr::S32* encodings);
+
+    unsigned int ledState() { return ledState_; }
+    void setLEDState(unsigned int state);
+
+    bool useCopyRect;
+
+    bool supportsLocalCursor;
+    bool supportsLocalXCursor;
+    bool supportsLocalCursorWithAlpha;
+    bool supportsDesktopResize;
+    bool supportsExtendedDesktopSize;
+    bool supportsDesktopRename;
+    bool supportsLastRect;
+    bool supportsLEDState;
+    bool supportsQEMUKeyEvent;
+
+    bool supportsSetDesktopSize;
+    bool supportsFence;
+    bool supportsContinuousUpdates;
+
+    int compressLevel;
+    int qualityLevel;
+    int fineQualityLevel;
+    int subsampling;
+
+  private:
+
+    int width_;
+    int height_;
+    ScreenSet screenLayout_;
+
+    PixelFormat pf_;
+    char* name_;
+    Cursor* cursor_;
+    std::set<rdr::S32> encodings_;
+    unsigned int ledState_;
+  };
+}
+#endif