RConnection WLAN selecting crash on N8

[bartoszp]

Hello,

I'm using in my app http api from httpexampleclient SDK example.
Connect is made by WLAN, but sometimes connection with iConnection.Start(iStatus);
returns -1 error code, so i want to reselect or select diffrent acces point. My code looks like:

void CClient::ConstructL()
	{
	
	// Open connection.
	User::LeaveIfError(iSocketServ.Connect());
	TInt result = iConnection.Open(iSocketServ);
	
	// Open the RHTTPSession
	iSess.OpenL();
	
	// setup preferences 
	iStatus.SetDialogPreference(ECommDbDialogPrefDoNotPrompt);

	// Initiate connection
	TInt connResult = iConnection.Start(iStatus);
	if(connResult!=KErrNone) {
		// If connection failed, launch IAP selection dialog.
		TInt stopResult = iConnection.Stop();
		iStatus.SetDialogPreference(ECommDbDialogPrefPrompt);
		connResult = iConnection.Start(iStatus);
	}

	// Install this class as the callback for authentication requests
	InstallAuthenticationL(iSess);
	
	User::LeaveIfError(iFileServ.Connect());
	iTransObs = CEventHandler::NewL();
	
	}

After -1 in connResult

TInt stopResult = iConnection.Stop();

returns -18(KErrNotReady) , but IAP dialog is shown.
Then I select WLAN access point - > app crash immediately.

What I'm doing wrong?

(Any clue will be appreciated).

Cheers
~bartosh

[wizard_hu_]

Whenever you see TRequestStatus, you are starting an asynchronous request, and the given method will return immediately. Learn about active objects (since there seem to be an 'iStatus' in your code). Or, in this particular case you could use the synchronous variant of RConnection::Start, just invoke it without any arguments (it simply returns its result code).

EDIT: Ok, that was not an answer to your question, I just noticed the iStatus.SetDialogPreference... A side note: consider using meaningful names for variables.

[bartoszp]

Hi,

yes, variable name is confusing, too many changes were made in this code.
So its clearer version and shorter question:

// Initiate connection
User::LeaveIfError(iSocketServ.Connect());
TInt result = iConnection.Open(iSocketServ);
		
// Open the RHTTPSession
iSess.OpenL();
		
// setup preferences 
// WORKS : 
iPrefs.SetDialogPreference(ECommDbDialogPrefWarn);
// CRASH (after selecting acces point) 
// iPrefs.SetDialogPreference(ECommDbDialogPrefPrompt);

TInt connResult = iConnection.Start(iPrefs);

// Install this class as the callback for authentication requests
InstallAuthenticationL(iSess);
	
User::LeaveIfError(iFileServ.Connect());

iTransObs = CEventHandler::NewL();

ECommDbDialogPrefPrompt makes WLAN acces point selecting dialog apeear and crash.

EDIT: asynchronous version also fails, but in different way: applications stops responding, and shows infinitely two last frames blinking (like there is some wrong with double buffering).