Creating a connection via WLAN Ad-Hoc Mode

[primal]

Hi All,

I have created an Access point for WLAN Ad-Hoc Mode in my phone (E65 and E61i). But I cant detect that access point using the other phone. How can I do that ? I want to connect two phones using WiFi Ad-Hoc mode.

How can i do that ?

Regards and Thanks
Primal

[wizard_hu_]

If you change Network Status to Public, other devices will be able to see your Ad-hoc WLAN. However they will not be able to connect - at least I have no success with that.
So you have to configure the "access point" on both devices (manually as a first try).
The client will ask you what to do when you issue RSocket::Connect.
The server is a bit harder, you have to explicitly join the network with RConnection::Start, then
- you can either configure a fix IP address in Advanced settings (in the access point configuration) - if you choose this one, it is preferably done on the client-side too
- or detect the automatically negotiated IP address as described in the (currently) neighboring thread http://discussion.forum.nokia.com/fo...d.php?t=125171 for example

[primal]

Thanx a lot wizard_hu,

I've got another problem, when i executed the following code, nothing happned. I mean, the created access point should appear in Access points tab in connections in tools.

CApAccessPointItem *wlan = CApAccessPointItem::NewLC();
wlan->SetNamesL(_L("myWLAN_IAP"));
wlan->SetBearerTypeL(EApBearerTypeWLAN);
wlan->WriteTextL(EApWlanNetworkName, _L("mySSID"));
// Store it into CommDb
CCommsDatabase *db = CCommsDatabase::NewL();
CleanupStack::PushL(db);
CApDataHandler *handler = CApDataHandler::NewLC(*db);
TUint32 apId = handler->CreateFromDataL(*wlan);

What could be the reason ?

Regards n Thanx,
primal

[primal]

As it is mentioned, When we create an Ad Hoc mode access point we have specifically create a connection to it...

The server is a bit harder, you have to explicitly join the network with RConnection::Start, then
- you can either configure a fix IP address in Advanced settings (in the access point configuration) - if you choose this one, it is preferably done on the client-side too

But how we can get the access point ID and network ID to create the connection to it ? When I create an Ad Hoc mode access point, it is not detected by the phone ...

Regards,
Primal

[lal.rajan]

Thanx a lot wizard_hu,

I've got another problem, when i executed the following code, nothing happned. I mean, the created access point should appear in Access points tab in connections in tools.

CApAccessPointItem *wlan = CApAccessPointItem::NewLC();
wlan->SetNamesL(_L("myWLAN_IAP"));
wlan->SetBearerTypeL(EApBearerTypeWLAN);
wlan->WriteTextL(EApWlanNetworkName, _L("mySSID"));
// Store it into CommDb
CCommsDatabase *db = CCommsDatabase::NewL();
CleanupStack::PushL(db);
CApDataHandler *handler = CApDataHandler::NewLC(*db);
TUint32 apId = handler->CreateFromDataL(*wlan);

What could be the reason ?

Regards n Thanx,
primal

you may have to add an extra line for that:

handler->UpdateAccessPointDataL(*wlan,ETrue);

regards.

[primal]

Thanx Raj,

But there is another problem when it is executing

TUint32 apId = handler->CreateFromDataL(*wlan);

in the above code it gives the error "System error (-1)" in emulator and when it runs in the phone nothing happened even with the

handler->UpdateAccessPointDataL(*wlan,ETrue);

. What could be the reason ?

How can I specifically say that the new access point that I am creating should be in the Ad-Hoc mode not in the infrastructure mode ?

[lal.rajan]

Then I beleive that u are not updating the comms data base, that will bring your created AP to the list. Well here is a sample code. This will create the APN for you.

	CCommsDatabase* db = CCommsDatabase::NewL();
	CleanupStack::PushL(db);
	TInt err = db->BeginTransaction();

	// Create a wlan AP and fill its mandatory fields.
	CApAccessPointItem* wlanAp = CApAccessPointItem::NewLC();
	CApAccessPointItem* wlanNewItem=CApAccessPointItem::NewLC();

	wlanAp->SetNamesL(_L("MyApn"));
	wlanAp->SetBearerTypeL(EApBearerTypeWLAN);
	wlanAp->WriteTextL(EApWlanNetworkName, _L("MySSid"));  // Give corrct Data as per the router configuration  //L!nkSys@MdpNok!a

	//Lan network mode should be 1 for infrastructure, 0 for adhoc
	wlanAp->WriteUint(EApWlanNetworkMode,0);
	TBool val =ETrue;
	TUint32 newalanid;

	CApDataHandler* handler = CApDataHandler::NewLC(*db);
	TUint32 apid;
	apid = handler->CreateFromDataL(*wlanAp);
	handler->UpdateAccessPointDataL(*wlanAp,val);
	handler->AccessPointDataL(apid,*wlanNewItem); 
	wlanNewItem->ReadUint( EApIapServiceId, newalanid );
	TBuf<50>	ibuff;
	wlanNewItem->ReadTextL( EApWlanNetworkName, ibuff ); 

	CCommsDbTableView* wLanServiceTable = db->OpenViewMatchingUintLC( TPtrC( WLAN_SERVICE ), TPtrC( WLAN_SERVICE_ID ), newalanid );
	errorCode = wLanServiceTable->GotoFirstRecord();
    
	if ( errorCode == KErrNone )
	{
		wLanServiceTable->UpdateRecord();
	}
	else
	{
		TUint32 dummyUid( 10 );	//KUidNone
		User::LeaveIfError( wLanServiceTable->InsertRecord( dummyUid ) );
		wLanServiceTable->WriteUintL( TPtrC( WLAN_SERVICE_ID ), apid );
	}

	wLanServiceTable->PutRecordChanges();
	err = db->CommitTransaction();
	CleanupStack::PopAndDestroy(5);

Regards,

[primal]

Hey Thanx Raj,

If I am not mistaken, by using "newalanid" in the below code, I can create a connection to the ad hoc access point that created and open a socket connection. Is it possible ?

Can we assign a IPv4 for this access point using the code ?

Regards,
Primal

[lal.rajan]

Yes you can provide those values also to the created AP. But whether your AP is now comming in the APN list or not. And if yes, whether it the setting required by you(that is Ad-hoc).

Well to provide Ipv4 and proxy related values to the AP you can use the CommsDb for updating those fields.It has a big list to be updated.

Regards

[primal]

Thanx Raj,

If I create it successfully, is it possible to connect to it using sockets ? And if another phone wants to connect to that AP, Can it be done using the provided IP in AP ?

Regards,
Primal

[lal.rajan]

Hi,

Sorry but I am not sure for that. I have never tried this. But sounds like you cna do so.
If you succed then please let us also know that.

Regards,

[primal]

Sure I will share it with you all,

But I have another issue, when creating an access point, in the WiKi example for creating an access point it has mentioned

For Symbian OS v9.1 necessary to use capability 'WriteDeviceData', else CreateFromDataL() generate leave KErrAbort (-39).

I am using Symbian 9.1. Can any one say how you can use "WriteDeviceData" instead of "CreateFromDataL()". I too have experienced this problem and coz of this I cant move forward. Can any propose a workaround for this ?

Regards,
Primal

[primal]

Hi,

In creating an access point, I added the capability "WriteDeviceData" to the application unless CreateFromDataL() generate leave KErrAbort (-39).

But when I install it in the phone (E65) it gave me the error "Required application access not granted". I am using a self signed certificate.

What could be the reason ? How can I overcome it ?

Regards,
Primal

[primal]

Hi All,

To use the "WriteDeviceData" capability, do you need a developer certificate ? Can't I do it with the self signed certificate? I need this to create an access point via the code.

Regards,
Primal