TCommDbConnPref - Invalid Format

[nstapleton]

I am using TCommDbConnPref to discover the different IAPs available.

When I run my app in phone debug mode my TCommDbConnPref object is described as Invalid Format.

When I run it in emulator mode it is ok.

I notice that the first phase constructor is not called in Phone debug mode but it is called in emulator mode.

CHTTPEngine::CHTTPEngine(MClientObserver& aObserver)
: iObserver(aObserver),
iPostData(NULL),
iRunning(EFalse),
iConnectionSetupDone(EFalse),
iPrevProfileId(-1)
{

}

// Now we have the iap Id. Use it to connect for the connection
TCommDbConnPref connectPref;
// Setup preferences
connectPref.SetDialogPreference(ECommDbDialogPrefDoNotPrompt);
// Sets the CommDb ID of the IAP to use for this connection
connectPref.SetIapId(iSelectedIap);
// Start connection
------> User::LeaveIfError(iConnection.Start(connectPref)); //<------------------failing here

Appreciate any guidance

[mrudulpen]

Hi,

Are the variables iSelectedIap & iConnection initialized?

Also what is the error you get?

[nstapleton]

Hi

iSelectedIap is initialized; in this case to 3

iConnection is also Invalid format. It is of type RConnection

Not getting any error; just a panic and the application aborts.

thanks

[mrudulpen]

Hi,

You need to open a connection to SocketServe and then open a RConnection before you can use it further(iConnection.Start).

Have a look at the code over here

[wizard_hu_]

Not getting any error; just a panic and the application aborts.

"just a panic"... http://wiki.forum.nokia.com/index.ph...ded_panic_code

[nstapleton]

Yes - I do that already:

// IAP Selected
// Open socket server and start the connection
User::LeaveIfError(iSocketServ.Connect());
User::LeaveIfError(iConnection.Open(iSocketServ));
// Now we have the iap Id. Use it to connect for the connection
TCommDbConnPref connectPref;
// Setup preferences
connectPref.SetDialogPreference(ECommDbDialogPrefDoNotPrompt);
// Sets the CommDb ID of the IAP to use for this connection
connectPref.SetIapId(iSelectedIap);
// Start connection
User::LeaveIfError(iConnection.Start(connectPref));

I am convinced it is to with the "Invalid Format" of connectPref and iConnection. Can anyone explain that?

[mrudulpen]

Hi,

Just Out of curiosity, iSelectedIap what is this initialized to?
You can look up into the table using following

// initialize a view
     CCommsDbConnectionPrefTableView* commDBView =
     commDB->OpenConnectionPrefTableInRankOrderLC(ECommDbConnectionDirectionOutgoing);


     // go to the first record
     User::LeaveIfError(commDBView->GotoFirstRecord());

     // Declare a prefTableView Object.
     CCommsDbConnectionPrefTableView::TCommDbIapConnectionPref pref;

     // read the connection preferences
     commDBView->ReadConnectionPreferenceL(pref);
     //TUint32 iapID = pref.iBearer.iIapId;
     iIapID = pref.iBearer.iIapId;

In case of your code iIAPID == iSelectedIap

Also check if there are any valid accesspoints on your device/Emulator

[nstapleton]

From debugging I know the value of iSelectedIap is 3

I know that this is a valid access point as I have used the same point without failure. I downloaded the sample code from:

http://www.forum.nokia.com/info/sw.n...I_Example.html

When I run this app I can use it no problems.

I am trying to adapt the same code to run it in my own application but I am getting a failure.

I am still wondering why in my app, the first phase constructor is not called and the connectPref and iConnection are "Invalid Format" when I check them in debug.

[wizard_hu_]

If you put a breakpoint on "User::LeaveIfError(iConnection.Start(connectPref));", and let the application run until that line, do you still see that "Invalid Format"?

[nstapleton]

Yes - have checked that and I do still see the invalid format for both objects.

Don't think this is significant but this is where I create my HTTP engine from:

/**
* Second-phase constructor for view.
* Initialize contents from resource.
*/
void CHTTPWorkContainerView::ConstructL()
{
// [[[ begin generated region: do not modify [Generated Code]
BaseConstructL( R_HTTPWORK_CONTAINER_HTTPWORK_CONTAINER_VIEW );

// ]]] end generated region [Generated Code]

// add your own initialization code here
------->iEngine = CHTTPEngine::NewL(*this);<----------------------------------
}

Methods from the engine object are subsequently called from within CHTTPWorkContainerView

[mahbub_s60]

Can you try to catch the leave code and see what is that in this line.
User::LeaveIfError(iConnection.Start(connectPref)); //<------------------failing here

Also could you check your connectPref is valid before starting the connection

[nstapleton]

No the connectPref is not valid.

Will post the leave code.

[wizard_hu_]

Maybe it sounds a bit rude, but could you please forget debugging for a moment and tell us what panic code you get? Here is the method: install the application to your device. Install ErrRd as described in the article referred in #5. Then start the application on your device.

[nstapleton]

Resolved the problem.

Nothing was being written to the ErrRd file.

Sorry guys for time wasting; It was an error in my resource file causing the crash.

[wizard_hu_]

Who cares about the content of the ErrRd file? It is a flag: if it exists, the device shows you the error message. If it does not exist, the error message remains hidden.