passing arguments in asyncronous server

thanks for the reply.
yes u r saying it correct. when i am packaging the data. it is getting destroyed.
but if i want to pass some strut then i need to package it.
some solution for that.

thanks for the replies ...
but lastly i have found the mistake i was making ...
actually the reason behind this what i found is :
it is not working in case of asyncronous request coz in async the kernel takes the value from the
address space of client and directly reading value causes in some descriptor results in junk value i.e
aMessage.ReadL( 0, des) so take the values in proper pointers rather than using aMessage.ReadL( 0, des )
coz kernel resolve the address values which are passed from client to server.
and passing values from the client use member variable not local variables.
client side:
typedef RArray RFolderList;
EXPORT_C void RClient::Fun( RFolderList& aFolderList, TRequestStatus& aStatus )
{
iFolderList = aFolderList;
iFolderListPckg = new(ELeave) TPckgC(iFolderList);

TInt n = iFolderList.Count();
iArgs.Set( 0, iFolderListPckg );
SendReceive( EEncryptFile, iArgs, aStatus );
}

server side:
void CServerSession::Fun(const RMessage2& aMessage)
{

TPckg des1(iFolderList);
TPckg* des;
des = (TPckg*)aMessage.Ptr0();();//pointer is used in place of ReadL()
des1.Copy(*des);
TInt count;
for( count = 0; count< iFolderList.Count(); count++ )
{
TBuf<50> fileName;
fileName = iFolderList[count];
SomeFun(fileName);
}
}

hi
alh

i am passing the rarray from client side to server side by marshalling it. and on the server side i am not able to retrive the data on the server side.i have checkd that the data on the client side marshalled properly.
code snippet is

client side
EXPORT_C void RClient::FolderListL( RFolderList& aFolderList )
{

iData = NULL;
iData = HBufC8::NewL(100);
TRAPD ( err, iData = iCryptoData->MarshalDataL( aFolderList ) )
if( iData )
{
TPtr8 ptr(iData->Des());
// TIpcArgs args(&ptr);
iArgs.Set( 0,&ptr );
SendReceive( ESetFolderList, iArgs, iStatus);
}
}

on the server side :
void CCSession::GetFolder(const RMessage2& aMessage)
{
TInt clientDesMaxLen;
clientDesMaxLen = aMessage.GetDesMaxLength(0) // failing here...as the data is not passed properly
HBufC8* desData = HBufC8::NewLC(clientDesMaxLen);
TPtr8 readPtr(desData->Des());
aMessage.ReadL(0, readPtr);
RFolderList folderList;
iData = CCryptoData::NewL();
iData->UnMardhalDataL(*desData, folderList);
}

thanks for the reply . i have got that.

thanks for the reply . i have got that.

in emulator things are working properly but in device data is not passed from client to server.
i am marshalling the data(RArray list of TFileName) in the client side and un-marshalling the data on the server side.

client side:
aFolderList is RArray
RBuf iData;

Clinet( aFolderList )
{
iData.Create(100);
iFolderCount = aFolderList.Count();
iData.Copy( iCryptoData->MarshalDataL( aFolderList ) );
iArgs.Set( 0,&iData );
iArgs.Set( 1, iFolderCount);

SendReceive( ESetFolderList, iArgs, iStatus );
}

server side:

in session(const RMessage2& aMessage)
{
TInt clientDesMaxLen;
clientDesMaxLen = aMessage.GetDesMaxLength(0);
HBufC8* desData = HBufC8::NewLC(clientDesMaxLen);// in device it fails here means len is not proper
TPtr8 readPtr(desData->Des());
aMessage.ReadL(0, readPtr);
TInt folderCount = aMessage.Int1();
RArray folderList;
iData = CCryptoData::NewL();
iData->UnMardhalDataL(*desData, folderList, folderCount);
}

above code is working fine in emulator but in device in server side it fails.
so can u please tell me how to pass the data(folder list) in different processes (i.e client server)

thanks for the reply ...
the code is working properly on the device ....above code is fine ..due to some binary mismatch things were not working in the e50.