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+/************************************************************************************
+
+Filename    :   OVR_Service_Win32_FastIPC_Client.h
+Content     :   Client side of connectionless fast IPC
+Created     :   Sept 16, 2014
+Authors     :   Chris Taylor
+
+Copyright   :   Copyright 2014 Oculus VR, LLC All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.2 (the "License"); 
+you may not use the Oculus VR Rift SDK except in compliance with the License, 
+which is provided at the time of installation or download, or which 
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+http://www.oculusvr.com/licenses/LICENSE-3.2 
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK 
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+
+#ifndef OVR_Service_Win32_FastIPC_Client_h
+#define OVR_Service_Win32_FastIPC_Client_h
+
+#include "Kernel/OVR_SharedMemory.h"
+#include "Net/OVR_RPC1.h"
+#include "Kernel/OVR_Win32_IncludeWindows.h"
+
+namespace OVR { namespace Service { namespace Win32 {
+
+
+//-----------------------------------------------------------------------------
+// FastIPCClient
+//
+// This class implements the client side for connectionless IPC messaging.
+//
+// The client reads the shared memory name provided and retrieves the data
+// and return event handles.  It can push data to the server synchronously
+// by signaling the data handle and waiting on the return handle.
+
+class FastIPCClient
+{
+    String            SharedMemoryName;
+    Ptr<SharedMemory> Scratch;
+    ScopedEventHANDLE DataEvent, ReturnEvent;
+    uint32_t          IPCMessageIndex;
+
+protected:
+    bool ReadInitialData(const char* buffer);
+
+public:
+    static const int      RegionSize = 4096;
+    static const uint32_t Magic      = 0xfe67bead;
+
+    // Semantic versioning
+    static const uint32_t MajorVersion = 1;
+    static const uint32_t MinorVersion = 0;
+
+public:
+    FastIPCClient();
+    ~FastIPCClient();
+
+    String GetSharedMemoryName() const
+    {
+        return SharedMemoryName;
+    }
+
+    // Call this to initialize the shared memory section
+    bool Initialize(const char* sharedMemoryName);
+
+    // Make a blocking call to the server
+    // Pass -1 for the timeout to wait forever
+    bool Call(Net::BitStream* bread, Net::BitStream* toast, int timeoutMs = -1);
+};
+
+
+}}} // namespace OVR::Service::Win32
+
+#endif // OVR_Service_Win32_FastIPC_Client_h