HTTP-CORE 0 happens when the user send post request for the sencond time

[okcry@163.com]

hi, there is a problem when i use http to post data,
the first time, after sending post request, everything goes well, but the second time,it fail with HTTP-CORE 0,
i check the document which said it is caused "RHTTPSession session is already open".
but i have no idea where goes wrong,

i use the codes from the example, Anyone who knows the answer please figure it out, thanks deeply!!!

the SetupConnectionL() function is as following:

{

TInt bearerFilter = EApBearerTypeAllBearers;
TInt currentProfileId;

// Check whether we are offline or online
iRepository->Get(KProEngActiveProfile, currentProfileId);

// Close the connection only if
// a) this is not the first time and
// b) the profile has changed and
// c) either the previous or the current profile is Offline (5 = Offline)
if (iPrevProfileId != -1 && iPrevProfileId != currentProfileId &&
(iPrevProfileId == 5 || currentProfileId == 5))
{
// Close and uninitialize
iConnectionDone = EFalse;
iSession.Close();
iConnection.Close();
iSocketServ.Close();
}

// Save current profile id
iPrevProfileId = currentProfileId;

// Try to find an existing connection. If connection has not been set up,
// iConnection is not initialized and FindExistingConnection() fails.
// Thus, in that case, finding must not be carried out.
if (iConnectionDone && !FindExistingConnection())
{
iConnectionDone = EFalse;
}

if (iConnectionDone)
{
// Connection setup is done
return;
}

// Open RHTTPSession with default protocol ("HTTP/TCP")
iSession.OpenL();

// Install this class as the callback for authentication requests. When
// page requires authentication the framework calls GetCredentialsL to get
// user name and password.

//InstallAuthenticationL(iSession);
/*
// In offline, only WLAN connections are available
if (currentProfileId == 5)
{
bearerFilter = EApBearerTypeWLAN;
}
*/
// Show IAP selection dialog
/*CActiveApDb* aDb = CActiveApDb::NewL();
CleanupStack::PushL(aDb);

CApSettingsHandler* settings = CApSettingsHandler::NewLC(
*aDb,
ETrue,
EApSettingsSelListIsPopUp,
EApSettingsSelMenuSelectNormal,
KEApIspTypeAll,
bearerFilter,
KEApSortNameAscending,
0,
EVpnFilterBoth,
ETrue);

TInt iapRet = settings->RunSettingsL(0, iSelectedIap);
CleanupStack::PopAndDestroy(settings);
CleanupStack::PopAndDestroy(aDb);
if (iapRet != KApUiEventSelected)
{
// Exit no selection
User::Leave(KErrNotReady);
}
else*/
{
// 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));
// Set the sessions connection info...
RStringPool strPool = iSession.StringPool();
RHTTPConnectionInfo connInfo = iSession.ConnectionInfo();
// ...to use our socket server and connection
connInfo.SetPropertyL ( strPool.StringF(HTTP::EHttpSocketServ,
RHTTPSession::GetTable() ), THTTPHdrVal (iSocketServ.Handle()) );
// ...to use our connection
connInfo.SetPropertyL ( strPool.StringF(HTTP::EHttpSocketConnection,
RHTTPSession::GetTable() ),
THTTPHdrVal (REINTERPRET_CAST(TInt, &(iConnection))) );

iConnectionDone = ETrue;
}

}

[symbianyucca]

Maybe you should close the session before attempting to re-connect it. Also I wonder why you are checking the offline profile in there ?

[okcry@163.com]

Yeah, thanks deeply, i just close all the connections before open again, the change as following:

if (iPrevProfileId != -1 || iPrevProfileId != currentProfileId ||/*&&*/
(iPrevProfileId == 5 || currentProfileId == 5))
{
// Close and uninitialize
iConnectionDone = EFalse;
iSession.Close();
iConnection.Close();
iSocketServ.Close();
}

change as:

iConnectionDone = EFalse;
iSession.Close();
iConnection.Close();
iSocketServ.Close();

then, it is okay now!

anyway, thanks deeply!!!

Maybe you should close the session before attempting to re-connect it. Also I wonder why you are checking the offline profile in there ?

[sathiyapriyanm]

Yeah, thanks deeply, i just close all the connections before open again, the change as following:

if (iPrevProfileId != -1 || iPrevProfileId != currentProfileId ||/*&&*/
(iPrevProfileId == 5 || currentProfileId == 5))
{
// Close and uninitialize
iConnectionDone = EFalse;
iSession.Close();
iConnection.Close();
iSocketServ.Close();
}

change as:

iConnectionDone = EFalse;
iSession.Close();
iConnection.Close();
iSocketServ.Close();

then, it is okay now!

anyway, thanks deeply!!!

Hi I am facing the same Problem..can u Kindly explain me how u solved...i did the changes as u mentioned but still getting the same problem.

[vinayakak]

Hi,

I am facing same problem with get also.

I debugged into the code and found that,FindExistingConnection() fails to identify that there is already a connection established.

and hence "connected" variable is returned with EFalse,

and then iSession.OpenL() crashes.

now my question is why we need to call FindExistingConnection() function?

the 2.2 example of http dont use FindExistingConnection() and instead just checks for iConnectionSetupDone flag

can anybody help in solving this confusion.

regards
vinayak

[sid_diu]

Thanks yaar you helped me out
nice answer yucca