--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sensorservices/sensorserver/src/client/sensrvclient.cpp	Tue Feb 02 00:53:00 2010 +0200
@@ -0,0 +1,200 @@
+/*
+* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). 
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Sensor server client side connector class
+*
+*/
+
+
+
+#include <e32svr.h>
+#include <data_caging_path_literals.hrh>  
+#include "sensrvdefines.h"
+#include "sensrvclient.h"
+#include "sensrvclientserver.h"
+#include "sensrvtrace.h"
+
+
+// -----------------------------------------------------------------------------
+// RSensrvClient::Connect
+// Connects to server
+// -----------------------------------------------------------------------------
+//
+TInt RSensrvClient::Connect()
+    {
+   COMPONENT_TRACE( ( _L( "Sensrv Client - RSensrvClient::Connect()" ) ) );
+
+    // Try this twice
+    TInt retry(KSensrvClientTryCount);
+    TInt err(KErrNone);
+
+    while (retry > 0)
+        {
+        // Try to create a Sensor Server session
+        err = CreateSession( KSensrvProcessName, 
+                             ServerVersion(), 
+                             KSensrvDefaultAsyncSlots );
+
+        COMPONENT_TRACE( ( _L( "Sensrv Client - RSensrvClient::Connect - CreateSession returned: %d" ), err ) );        
+        
+        if ( err != KErrNotFound && err != KErrServerTerminated )
+            {
+            // KErrNone or unrecoverable error
+            if (err != KErrNone)
+                {
+                ERROR_TRACE( ( _L( "Sensrv Client - RSensrvClient::Connect - ERROR: CreateSession unrecoverable error: %d" ), err ) );
+                }
+            
+            retry = 0;
+            }
+        else
+            {
+            // Return code was KErrNotFound or KErrServerTerminated.
+            // Try to start a new Sensor Server
+            err = StartServer();
+
+            COMPONENT_TRACE( ( _L( "Sensrv Client - RSensrvClient::Connect - StartServer returned: %d" ), err ) );        
+
+            if ( err != KErrNone && err != KErrAlreadyExists )
+                {
+                // Unrecoverable error
+                ERROR_TRACE( ( _L( "Sensrv Client - RSensrvClient::Connect - ERROR: StartServer unrecoverable error: %d" ), err ) );
+                retry = 0;
+                }
+            }
+                
+        retry--;
+        }
+        
+    COMPONENT_TRACE( ( _L( "Sensrv Client - RSensrvClient::Connect - return %d" ), err ) );        
+    return err;
+    }
+    
+
+// -----------------------------------------------------------------------------
+// RSensrvClient::SendReceiveSync
+// Send message to server
+// -----------------------------------------------------------------------------
+//
+TInt RSensrvClient::SendReceiveSync( TSensrvServerRequest aRequest, const TIpcArgs& aArgs ) const
+    {
+    COMPONENT_TRACE( ( _L( "Sensrv Client - RSensrvClient::SendReceiveSync()" ) ) );
+    return SendReceive( aRequest, aArgs );
+    }
+
+// -----------------------------------------------------------------------------
+// RSensrvClient::SendReceiveSync
+// Send asynchronous message to server
+// -----------------------------------------------------------------------------
+//
+void RSensrvClient::SendReceiveAsync( TSensrvServerRequest aRequest, const TIpcArgs& aArgs, TRequestStatus& aStatus ) const
+    {
+    COMPONENT_TRACE( ( _L( "Sensrv Client - RSensrvClient::SendReceiveAsync()" ) ) );
+    SendReceive( aRequest, aArgs, aStatus );
+    }
+    
+    
+// -----------------------------------------------------------------------------
+// RSensrvClient::StartServer
+// Starts server.
+// -----------------------------------------------------------------------------
+//
+TInt RSensrvClient::StartServer() const
+    {
+    COMPONENT_TRACE( ( _L( "Sensrv Client - RSensrvClient::StartServer()" ) ) );
+
+    RProcess server;
+    const TUidType serverUid( KNullUid, KSensrvUid2, KNullUid );
+    TInt err = server.Create( ServerLocation(), // sensorserver.exe
+                           KNullDesC, // A descriptor containing data passed as 
+                                      // an argument to the thread function of 
+                                      // the new process's main thread, when it 
+                                      // is first scheduled.
+                           serverUid, // Sensor server UID
+                           EOwnerProcess ); // Ownership of this process handle 
+
+    // Return error code if we couldn't create a process
+    if ( err == KErrNone )
+        {
+        // Rendezvous is used to detect server start
+        TRequestStatus stat;
+        server.Rendezvous( stat );
+
+        if ( stat != KRequestPending )
+            {
+            ERROR_TRACE( ( _L( "Sensrv Client - RSensrvClient::StartServer - ERROR: Rendezvous failure: %d" ), stat.Int() ) );
+            server.Kill( 0 ); // Abort startup
+            }
+        else
+            {
+            server.Resume();  // Logon OK - start the server
+            }
+
+        COMPONENT_TRACE( ( _L( "Sensrv Client - RSensrvClient::StartServer - Waiting server startup" ) ) );
+
+        User::WaitForRequest( stat ); // Wait for start or death
+
+        COMPONENT_TRACE( ( _L( "Sensrv Client - RSensrvClient::StartServer - Server startup wait finished" ) ) );
+        
+        // We can't use the 'exit reason' if the server paniced as this
+        // is the panic 'reason' and may be '0' which cannot be distinguished
+        // from KErrNone
+        if ( server.ExitType() == EExitPanic ) 
+            {
+            ERROR_TRACE( ( _L( "Sensrv Client - RSensrvClient::StartServer - ERROR: Server paniced at startup" ) ) );
+            err = KErrGeneral;
+            }
+        else
+            {
+            err = stat.Int();
+            }
+
+        // We can close the handle now
+        server.Close();        
+        }
+
+    COMPONENT_TRACE( ( _L( "Sensrv Client - RSensrvClient::StartServer - return %d" ), err ) );
+
+    return err;
+    }
+
+// -----------------------------------------------------------------------------
+// RSensrvClient::ServerLocation
+// Returns server location
+// -----------------------------------------------------------------------------
+//
+TFullName RSensrvClient::ServerLocation() const
+    {
+    TFullName fullPathAndName( KSensrvExeDrive );
+    
+    fullPathAndName.Append( KDC_PROGRAMS_DIR );
+    
+    fullPathAndName.Append( KSensrvExeName );
+    
+    COMPONENT_TRACE( ( _L( "Sensrv Client - RSensrvClient::ServerLocation - return %S" ), &fullPathAndName ) );
+
+    return fullPathAndName;
+    }
+
+// -----------------------------------------------------------------------------
+// RSensrvClient::ServerVersion
+// Return version of server
+// -----------------------------------------------------------------------------
+//
+TVersion RSensrvClient::ServerVersion() const 
+    {
+    return TVersion( KSensrvVersionMajor, KSensrvVersionMinor, KSensrvVersionBuild );
+    }
+
+
+//  End of File