XML data sending problem

[amit04.kumar]

Hello All,

I want to send the XML request through HTTPPost Request having data size more than TBuf<1000>.
When data size less than TBuf<900> its working fine on device (Nokia E50) and emulator.
But when I try to send data having more than TBuf<1000> its gives error Panic User 42 on device (Nokia E50) but its working on emulator.

How can I increase the TBuf <---> size? I try to increase it directly (i.e. TBuf<1500>) but it gives Panic User 42.


Amit

[kiran10182]

Use Heap based descriptor instead. For example:

HBufC* data = HBufC::NewL(1000);
CleanupStack::PushL(data);
...
//Perform your operations (e.g: sending data through http post)
...
CleanupStack::PopAndDestroy(data);

You may also want to increase Heap size for your application. Check this: http://wiki.forum.nokia.com/index.ph...an_application

[amit04.kumar]

Hi Kiran,

Thanks for your reply.
As per your suggestion, I have used

HBufC* data = HBufC::NewL(1000);
CleanupStack::PushL(data);
...
//Perform your operations (e.g: sending data through http post)
...
CleanupStack::PopAndDestroy(data);

But I am using ClientEngine class for sending the data through HTTPPost request.

Here, void CClientEngine::IssueHTTPPostL(const TDesC8& aUri,
const TDesC8& aContentType,
const TDesC8& aBody) is the method which I have to call and pass the body data.

If I pass HBufC* data instead of TDesC8& aBody
Then I got data type mismatched on
iBody = aBody.AllocL();

Here is the code

void CClientEngine::IssueHTTPPostL(const TDesC8& aUri,
const TDesC8& aContentType,
const TDesC8& aBody)
{
if (IsActive())
{
return;
}

iEngineState = EPost;

delete iUri; iUri = NULL;
delete iContentType; iContentType = NULL;
delete iBody; iBody = NULL;

iUri = aUri.AllocL();
iContentType = aContentType.AllocL();
iBody = aBody.AllocL(); error line data type mismatched

// Create HTTP connection
TRAPD(err, SetupConnectionL());
if (err == KErrAlreadyExists)
{
DoHTTPPostL();
}
else if (err != KErrNone)
{
// return;
}
}


Amit

[kiran10182]

Use HBufC8 instead:

HBufC8* iBody;
..
..
//To avoid memory leaks, delete previously owned data
if(iBody) 
{
     delete iBody;
     iBody = NULL;
}
iBody = aBody.AllocL(); 
..

[amit04.kumar]

Hi Kiran,

now, I get
error: request for member `AllocL' in `aBody', which is of non-class type `HBufC*'
On iBody = aBody.AllocL();


Amit

[kiran10182]

How did you declare iBody? Show it.

[amit04.kumar]

Hi Kiran,

Here is my code,

void CClientEngine::IssueHTTPPostL(const TDesC8& aUri,
const TDesC8& aContentType,
HBufC* aBody)
{
if (IsActive())
{
return;
}

iEngineState = EPost;
HBufC8* iBody;


delete iUri; iUri = NULL;
delete iContentType; iContentType = NULL;
//delete iBody; iBody = NULL;

iUri = aUri.AllocL();
iContentType = aContentType.AllocL();
if(iBody)
{
delete iBody;
iBody = NULL;
}
//iBody = aBody.AllocL();
iBody = aBody.AllocL();



// Create HTTP connection
TRAPD(err, SetupConnectionL());
if (err == KErrAlreadyExists)
{
DoHTTPPostL();
}
else if (err != KErrNone)
{
// return;
}
}


Amit

[kiran10182]

Hi Kiran,

Here is my code,

void CClientEngine::IssueHTTPPostL(const TDesC8& aUri,
const TDesC8& aContentType,
HBufC* aBody) {

Why are you doing this? Did I say to change it anywhere in this thread? Just revert it and use the following signature.

void CClientEngine::IssueHTTPPostL(const TDesC8& aUri,
const TDesC8& aContentType,
const TDesC8& aBody)

Also if it works for iContentType then why don't you just imitate it and declare the same type of variable for iBody in your header file. Is it that hard?

[amit04.kumar]

Hi Kiran,

I have revert that code and iBody declare in header file.

I am calling

void CClientEngine::IssueHTTPPostL(const TDesC8& aUri,
const TDesC8& aContentType,
const TDesC8& aBody)

Inside

void HandleUrlRequestL(const TBuf8<KMaxUriNameLength>& aUri,const TDesC8& aPostdata);

Here aPostdata is TDesC8, aBody datatype is also TDesC8.

But the XML which I have generating is stored in HBufC. Because of this I got the Error.
function call 'HandleUrlRequestL({lval} TBuf8<128>, {lval} HBufC16 *)' does not match
How can I send the
HBufC* data = HBufC::NewL(1000);
data to
HandleUrlRequestL(uri,[data]);


Amit

[kiran10182]

void HandleUrlRequestL(const TBuf8<KMaxUriNameLength>& aUri,const TDesC8& aPostdata);

First of all change above signature to:

void HandleUrlRequestL(const TDesC8& aUri,const TDesC8& aPostdata);

Now sending HBufC data, you may try simple copy operations.

HBufC8* data = HBufC8::NewL(xmlData->Length());
data->Des().Copy(*xmlData);
...
...

Check this Wiki article also: http://wiki.forum.nokia.com/index.ph...ng_Descriptors

[amit04.kumar]

Thanks Kiran,

This will definitely help us.
I am going to implement this and I will let you know if I got any problem.

Amit