diff --git a/testApp/client/MockClientImpl.cpp b/testApp/client/MockClientImpl.cpp
index 5bb0392..e6e6844 100644
--- a/testApp/client/MockClientImpl.cpp
+++ b/testApp/client/MockClientImpl.cpp
@@ -4,14 +4,196 @@
 
 #include <pvAccess.h>
 #include <iostream>
+#include <showConstructDestruct.h>
+#include <lock.h>
 
 using namespace epics::pvData;
 using namespace epics::pvAccess;
 
 
 
+
+
+static volatile int64 mockChannel_totalConstruct = 0;
+static volatile int64 mockChannel_totalDestruct = 0;
+static Mutex *mockChannel_globalMutex = 0;
+
+static int64 mockChannel_getTotalConstruct()
+{
+    Lock xx(mockChannel_globalMutex);
+    return mockChannel_totalConstruct;
+}
+
+static int64 mockChannel_getTotalDestruct()
+{
+    Lock xx(mockChannel_globalMutex);
+    return mockChannel_totalDestruct;
+}
+
+static ConstructDestructCallback *mockChannel_pConstructDestructCallback;
+
+static void mockChannel_init()
+{
+     static Mutex mutex = Mutex();
+     Lock xx(&mutex);
+     if(mockChannel_globalMutex==0) {
+        mockChannel_globalMutex = new Mutex();
+        mockChannel_pConstructDestructCallback = new ConstructDestructCallback(
+            String("mockChannel"),
+            mockChannel_getTotalConstruct,mockChannel_getTotalDestruct,0);
+     }
+}
+
+
+class MockChannel : public Channel {
+    private:
+        ChannelProvider* m_provider;
+        ChannelRequester* m_requester;
+        String m_name;
+        String m_remoteAddress;
+        
+    private:
+    ~MockChannel()
+    {
+        Lock xx(mockChannel_globalMutex);
+        mockChannel_totalDestruct++;
+    }
+    
+    public:
+    
+    MockChannel(
+        ChannelProvider* provider,
+        ChannelRequester* requester,
+        String name,
+        String remoteAddress) :
+        m_provider(provider),
+        m_requester(requester),
+        m_name(name),
+        m_remoteAddress(remoteAddress)
+    {
+        mockChannel_init();   
+
+        Lock xx(mockChannel_globalMutex);
+        mockChannel_totalConstruct++;
+        
+        // already connected, report state
+        m_requester->channelStateChange(this, CONNECTED);
+    }
+    
+    virtual void destroy()
+    {
+        delete this;
+    };
+
+    virtual String getRequesterName()
+    {
+        return getChannelName();
+    };
+    
+    virtual void message(String message,MessageType messageType) 
+    {
+        std::cout << "[" << getRequesterName() << "] message(" << message << ", " << messageTypeName[messageType] << ")" << std::endl; 
+    }
+
+    virtual ChannelProvider* getProvider() 
+    {
+        return m_provider;
+    }
+
+    virtual epics::pvData::String getRemoteAddress()
+    {
+        return m_remoteAddress;
+    }
+
+    virtual epics::pvData::String getChannelName()
+    {
+        return m_name;
+    }
+
+    virtual ChannelRequester* getChannelRequester()
+    {
+        return m_requester;
+    }
+
+    virtual ConnectionState getConnectionState()
+    {
+        return CONNECTED;
+    }
+
+    virtual bool isConnected()
+    {
+        return getConnectionState() == CONNECTED;
+    }
+
+    virtual AccessRights getAccessRights(epics::pvData::PVField *pvField)
+    {
+        return readWrite;
+    }
+
+    virtual void getField(GetFieldRequester *requester,epics::pvData::String subField)
+    {
+        // TODO 
+    }
+
+    virtual ChannelProcess* createChannelProcess(
+            ChannelProcessRequester *channelProcessRequester,
+            epics::pvData::PVStructure *pvRequest)
+    {
+        // TODO
+        return 0;
+    }
+
+    virtual ChannelGet* createChannelGet(
+            ChannelGetRequester *channelGetRequester,
+            epics::pvData::PVStructure *pvRequest)
+    {
+        // TODO
+        return 0;
+    }
+
+    virtual ChannelPut* createChannelPut(
+            ChannelPutRequester *channelPutRequester,
+            epics::pvData::PVStructure *pvRequest)
+    {
+        // TODO
+        return 0;
+    }
+
+    virtual ChannelPutGet* createChannelPutGet(
+            ChannelPutGetRequester *channelPutGetRequester,
+            epics::pvData::PVStructure *pvRequest)
+    {
+        // TODO
+        return 0;
+    }
+    
+    virtual ChannelRPC* createChannelRPC(ChannelRPCRequester *channelRPCRequester,
+            epics::pvData::PVStructure *pvRequest)
+    {
+        // TODO
+        return 0;
+    }
+
+    virtual epics::pvData::Monitor* createMonitor(
+            epics::pvData::MonitorRequester *monitorRequester,
+            epics::pvData::PVStructure *pvRequest)
+    {
+        // TODO
+        return 0;
+    }
+
+    virtual ChannelArray* createChannelArray(
+            ChannelArrayRequester *channelArrayRequester,
+            epics::pvData::PVStructure *pvRequest)
+    {
+        // TODO
+        return 0;
+    }
+};
+
+
 class MockChannelProvider : public ChannelProvider {
-public:
+    public:
 
     virtual epics::pvData::String getProviderName()
     {
@@ -48,15 +230,15 @@ public:
     {
         if (address == "local")
         {
-            Channel* channel = 0;
+            Channel* channel = new MockChannel(this, channelRequester, channelName, address);
             channelRequester->channelCreated(getStatusCreate()->getStatusOK(), channel);
-            // TODO state change
             return channel;
         }
         else
         {   
             Status* errorStatus = getStatusCreate()->createStatus(STATUSTYPE_ERROR, "only local supported", 0);
             channelRequester->channelCreated(errorStatus, 0);
+            delete errorStatus; // TODO guard from CB
             return 0;
         }
     }
@@ -78,11 +260,11 @@ class MockClientContext : public ClientContext
         initialize();
     }
     
-    virtual const Version* getVersion() {
+    virtual Version* getVersion() {
         return m_version;
     }
 
-    virtual const ChannelProvider* getProvider() {
+    virtual ChannelProvider* getProvider() {
         return m_provider;
     }
     
@@ -120,12 +302,50 @@ class MockClientContext : public ClientContext
 };
 
 
+class ChannelRequesterImpl : public ChannelRequester
+{
+    virtual String getRequesterName()
+    {
+        return "ChannelRequesterImpl";
+    };
+    
+    virtual void message(String message,MessageType messageType) 
+    {
+        std::cout << "[" << getRequesterName() << "] message(" << message << ", " << messageTypeName[messageType] << ")" << std::endl; 
+    }
+
+    virtual void channelCreated(epics::pvData::Status* status, Channel *channel)
+    {
+        std::cout << "channelCreated(";
+        String str;
+        status->toString(&str);
+        std::cout << str << ", " << (channel ? channel->getChannelName() : "(null)") << ")" << std::endl;
+    }
+    
+    virtual void channelStateChange(Channel *c, ConnectionState connectionState)
+    {
+        std::cout << "channelStateChange(" << c->getChannelName() << ", " << ConnectionStateNames[connectionState] << ")" << std::endl;
+    }
+};
+
 int main(int argc,char *argv[])
 {
     MockClientContext* context = new MockClientContext();
     context->printInfo();
     
+    ChannelRequesterImpl requester;
+    
+    /*Channel* noChannel =*/ context->getProvider()->createChannel("test", &requester, ChannelProvider::PRIORITY_DEFAULT, "over the rainbow");
+
+    Channel* channel = context->getProvider()->createChannel("test", &requester);
+    std::cout << channel->getChannelName() << std::endl;
+    channel->destroy();
+    
+    
     context->destroy();
+    
+    std::cout << "-----------------------------------------------------------------------" << std::endl;
+    getShowConstructDestruct()->constuctDestructTotals(stdout);
     return(0);
 }