Error for reading Data from socket

[rati2010]

Hi All,

I am trying to create a socket to raed a chunk of data from the server side.When working on emulator i am able to get the data..but using device it is giving error. I am able to connect
to the socket and after that only i am requesting the data..
i am using iSocket.RecvOneOrMore() for getting the data..

Can anyone please guide what is the problem?

Thanks

[ivey]

What error do you get?

Also it would be great if you could provide a code snippet illustrating how you are establishing a connection.

[rati2010]

the application is getting exited..

i am using this for receiving the data
iSocket.RecvOneOrMore( iBuffer, 0, iStatus, iDummyLength );

and this code for connection

TInetAddr addr;
ConnectL( addr.Address() );

I am giving appropriate IP address..and have checked that the connection is happening...but only when i try to raed data it is crashing.

[wizard_hu_]

Check what you get: http://wiki.forum.nokia.com/index.ph...ded_panic_code

[david.caabeiro]

With that little bit of info is hard to say. Post at least the lines surrounding your recv call.. and check if you get any panic..

[ivey]

the application is getting exited..

Your application panics. Please refer to this article on how to get the panic details: Extended panic code.

[rati2010]

void CReader::RunL()
{
RFs rfs;
RFile aFile ;
TBuf8<51200> aCon;
CAknInformationNote* note = new (ELeave)CAknInformationNote(ETrue);
note->ExecuteLD(_L("RunL")); // Have to be removed
// Active object request complete handler
switch ( iStatus.Int() )
{
case KErrNone:
iEngineNotifier.ResponseReceived( iBuffer );
aCon.Copy(iBuffer);
TInt err;
User::LeaveIfError(rfs.Connect());
err = aFile.Open(rfs,KPath1,EFileWrite);
if(err != KErrNone)
err = aFile.Create(rfs,KPath1,EFileWrite);//EFileShareReadersOrWriters);
if(KErrNone == err)
{
int pos = 0;
aFile.Size(pos);
aFile.Seek(ESeekStart,pos);
err = aFile.Write( aCon);
}
aFile.Close();
rfs.Close();

break;
case KErrDisconnected:
iEngineNotifier.ReportError( Notifier::EDisconnected,
iStatus.Int() );
break;
default:
iEngineNotifier.ReportError( Notifier::EGeneralReadError,
iStatus.Int() );
break;
}
}



void CReader::IssueRead()
{
CAknInformationNote* note = new (ELeave)CAknInformationNote(ETrue);
note->ExecuteLD(_L("IssueRead")); // Have to be removed
// Initiate a new read from socket into iBuffer
__ASSERT_ALWAYS( !IsActive(), User::Panic( KPanicEngineRead,
ESocketsBadState ) );
iSocket.RecvOneOrMore( iBuffer, 0, iStatus, iDummyLength );
SetActive();
}




After IssueRead() (it enters IssueRead function() called from soem other function and i am able to see the information note on entering the IssueRead()),the application exits and shows KernEXec3.. which we are getting when we manually exit the application on the emulator...otherwise it works fine on emulator.
-

[ivey]

void CReader::RunL()
{
RFs rfs;
RFile aFile ;
TBuf8<51200> aCon;
CAknInformationNote* note = new (ELeave)CAknInformationNote(ETrue);
note->ExecuteLD(_L("RunL")); // Have to be removed
// Active object request complete handler

Well, to begin with you can make the aCon buffer not so large (1 kB or less) or allocate this memory on heap. You are definitely running out of stack here.

[rati2010]

Thanks a lot.. On reducing the size it is working ...

[ivey]

Great!

To avoid such issues in future the following article may be useful for you:
Emulator/native platform differences

[wizard_hu_]

In fact iBuffer is already a 8-bit descriptor, you can write it directly to the file.