what is header file required for HTTP::EuserAgent?

[abhinavnishantintg]

what is header file required for HTTP::EuserAgent?

[symbianyucca]

You could maybe check the docs: http://library.developer.nokia.com/i...7C7752639.html there is attached example applciation which is using this class as well, so you could see what headers are included in there.

Or search the include folder in your SDK.

[abhinavnishantintg]

yse I got it in a link below this post. <http.h>
I have a series of other issues.
i have a function
void ChelloHTTPEngine::InvokeHttpMethodL(const TDesC8& aUri, RStringF aMethod);
what is the value with which i should call this function
TRAPD(err, iHTTPEngine->InvokeHttpMethodL(aUri, HTTP::EGET));--> does not accept
My project is yet to begin, I am developing prototype.. So, can I get address of some server so that I can test my HTTP Code.

[symbianyucca]

I would suggest you do check the full exanmple for HTTP available at the examples section: https://www.developer.nokia.com/Deve...tworking.xhtml in general its easier to check exiting and working code. Just see how its done there, and copy-paste the code segment..

[abhinavnishantintg]

yes I have this code, and I have read the SDK, I have developed the code.
pasting below->
appui-> handle commandl--------
_LIT(KAddress,"https://www.google.co.in/#hl=en&sugexp=les%3B&gs_nf=1&tok=wmCW2k6BCJLQ_tLRmmiTEA&cp=3&gs_id=1i0&xhr=t&q=wikipedia&pf=p&output=search&sclient=psy-ab&oq=wik&gs_l=&pbx=1&bav=on.2,or.r_gc.r_pw.r_cp.r_qf.&fp=7830c53aba414a9f&biw=1366&bih=665");
TBuf8<20>aUri;
TRAPD(err, iHTTPEngine->InvokeHttpMethod(aUri,EGet ));
----------------------------------------------------------------------------------------------------------------------------------------------------
class ChelloHTTPEngine : public CBase,MHTTPTransactionCallback
{
.............
void MHFRunL(RHTTPTransaction aTransaction, const THTTPEvent &aEvent);
TInt MHFRunError(TInt aError, RHTTPTransaction aTransaction, const THTTPEvent &aEvent);
void InvokeHttpMethodL(const TDesC8& aUri, RStringF aMethod);
void SetHeaderL(RHTTPHeaders aHeaders, TInt aHdrField, const TDesC8& aHdrValue);
RHTTPSession iSession;
};
----------------------------------------------------------------------------------------------------------------------------------------------------------

void ChelloHTTPEngine::ConstructL()
{
iSession.OpenL();

}

void ChelloHTTPEngine::MHFRunL(RHTTPTransaction aTransaction, const THTTPEvent &aEvent)
{
switch (aEvent.iStatus)
{
case THTTPEvent::EGotResponseHeaders:
{

}
break;
case THTTPEvent::EGotResponseBodyData:
{

}
break;
case THTTPEvent::EResponseComplete:
{

}
break;
case THTTPEvent::ESucceeded:
{

}
break;
case THTTPEvent::EFailed:
{

}
break;
default:
{

}
break;
}

}

void ChelloHTTPEngine::InvokeHttpMethod(const TDesC8& aUri, TMethod aMethod)
{
if(aMethod==EGet)
InvokeHttpMethodL(aUri,iSession.StringPool().StringF(HTTP::EGET,RHTTPSession::GetTable())) ;
if(aMethod==EPost)
InvokeHttpMethodL(aUri,iSession.StringPool().StringF(HTTP::EPOST,RHTTPSession::GetTable())) ;

}

void ChelloHTTPEngine::InvokeHttpMethodL(const TDesC8& aUri, RStringF aMethod)
{
//const TDesC8& aUri;

TUriParser8 uri;
uri.Parse(aUri);
RHTTPTransaction trans = iSession.OpenTransactionL(uri, *this, aMethod);
RHTTPHeaders hdr = trans.Request().GetHeaderCollection();
// Add headers appropriate to all methods
SetHeaderL(hdr, HTTP::EUserAgent, KUserAgent);
SetHeaderL(hdr, HTTP::EAccept, KAccept);
// submit the transaction
trans.SubmitL();
// Start the scheduler, once the transaction completes or is cancelled on an error the scheduler will be
// stopped in the event handler
CActiveScheduler::Start();

};
TInt ChelloHTTPEngine::MHFRunError(TInt aError, RHTTPTransaction aTransaction, const THTTPEvent &aEvent)
{

}
void ChelloHTTPEngine::SetHeaderL(RHTTPHeaders aHeaders, TInt aHdrField, const TDesC8& aHdrValue)
{
RStringF valStr = iSession.StringPool().OpenFStringL(aHdrValue);
THTTPHdrVal val(valStr);
aHeaders.SetFieldL(iSession.StringPool().StringF(aHdrField,RHTTPSession::GetTable()), val);
valStr.Close();
}


I have just one compilation error-------------
have a function
void ChelloHTTPEngine::InvokeHttpMethodL(const TDesC8& aUri, RStringF aMethod);
what is the value with which i should call this function
TRAPD(err, iHTTPEngine->InvokeHttpMethodL(aUri, HTTP::EGET));--> does not accept


Rest of the code.....does it look ok..

[symbianyucca]

...
TRAPD(err, iHTTPEngine->InvokeHttpMethodL(aUri, HTTP::EGET));--> does not accept
...

Are you sure its written like that in the example ?
Also you might want to share more information , like what kind of error it generates and when.. Anyway, please do check the example and see how its handled in there first.

[abhinavnishantintg]

may be i should use
iSession.StringPool().StringF(HTTP::EGET,RHTTPSession::GetTable())
instead of (HTTP::EGET)
as I am using the function from appui where there is no RHTTPSession, I may take help of enums.
let me take a try...

[symbianyucca]

please, I don't want to repeat myself, but as the example has perfectly working code snipped included in it, I do suggest you to copy-paste it from there. If you would have done this when I asked first time, we would have been over this issue already, so what about trying what has been suggested.

[abhinavnishantintg]

hi,
I am trying to run the code,
(I have included the google url )
but in mhfrunl()
THTTPEvent::EGotResponseBodyData: and THTTPEvent::EGotResponseHeaders: are not getting executed
instead
control goes to default: and THTTPEvent::EFailed:


then i tried changing code

void ChelloHTTPEngine::InvokeHttpMethodL(const TDesC8& aUri, RStringF aMethod)
{
//const TDesC8& aUri;
User::LeaveIfError(iSocketServ.Connect());
User::LeaveIfError(iConnection.Open(iSocketServ));
iConnection.Start(/*iStatus*/);
TUriParser8 uri;
uri.Parse(aUri);
RHTTPTransaction trans = iSession.OpenTransactionL(uri, *this, aMethod);
RHTTPHeaders hdr = trans.Request().GetHeaderCollection();
// Add headers appropriate to all methods
SetHeaderL(hdr, HTTP::EUserAgent, KUserAgent);
SetHeaderL(hdr, HTTP::EAccept, KAccept);
// submit the transaction
trans.SubmitL();
// Start the scheduler, once the transaction completes or is cancelled on an error the scheduler will be
// stopped in the event handler
CActiveScheduler::Start();

};
still result is the same

[symbianyucca]

I'm rather sure that the original example has pretty different coding, so please do check it. At least I can not remember it having nested Active schedulers etc.

[abhinavnishantintg]

Hi,
I have changed the code, copied most of the lines from the example but i get the same error as previous>>>> default and failed in MHFRUNL()
(By the way I am not using MHTTPDATASUPPLIER now, ithink I should check response in MHFRUNL first)


void ChelloHTTPEngine::ConstructL()
{
//iSession.OpenL();
gConsole=((ChelloAppUi *)(CEikonEnv::Static()->AppUi()))->gConsole2;
CActiveScheduler::Add(this);

}
void ChelloHTTPEngine::SetupConnectionL()
{
if (iConnectionSetupDone)
{
// Connection setup is done
User::Leave(KErrAlreadyExists);
}
if (IsActive())
{
User::Leave(KErrInUse);
}

// Open HTTP Session
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);

// Open CCmApplicationSettingsUi
TCmSettingSelection userSelection;
CCmApplicationSettingsUi* settings = CCmApplicationSettingsUi::NewL();
CleanupStack::PushL(settings);
TUint listedItems = CMManager::EShowAlwaysAsk |
CMManager::EShowDefaultConnection |
CMManager::EShowDestinations |
CMManager::EShowConnectionMethods;
TBearerFilterArray filter;
TBool selected = settings->RunApplicationSettingsL(userSelection,listedItems,filter);
CleanupStack::PopAndDestroy(settings);

// Check selection
if (selected) {
switch (userSelection.iResult)
{
case CMManager::EDestination:
{
TConnSnapPref prefs;
prefs.SetSnap(userSelection.iId);

User::LeaveIfError(iSocketServ.Connect());
User::LeaveIfError(iConnection.Open(iSocketServ));
iConnection.Start(prefs, iStatus);
break;
}
case CMManager::EConnectionMethod:
{
TCommDbConnPref prefs;
prefs.SetIapId(userSelection.iId);
prefs.SetDialogPreference(ECommDbDialogPrefDoNotPrompt);

User::LeaveIfError(iSocketServ.Connect());
User::LeaveIfError(iConnection.Open(iSocketServ));
iConnection.Start(prefs, iStatus);
break;
}
case CMManager::EDefaultConnection:
{
User::LeaveIfError(iSocketServ.Connect());
User::LeaveIfError(iConnection.Open(iSocketServ));
iConnection.Start(iStatus);
break;
}
default: // EAlwaysAsk
{
TCommDbConnPref prefs;
prefs.SetDialogPreference(ECommDbDialogPrefPrompt);

User::LeaveIfError(iSocketServ.Connect());
User::LeaveIfError(iConnection.Open(iSocketServ));
iConnection.Start(prefs, iStatus);
}
}

SetActive();
}
}
void ChelloHTTPEngine::IssueHTTPGetL(const TDesC8& aUri)
{
if (IsActive())
{
return;
}

iEngineState = EGet;

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

iUri = aUri.AllocL();

// Create HTTP connection
TRAPD(err, SetupConnectionL());
if (err == KErrAlreadyExists)
{
DoHTTPGetL();
}
else if (err != KErrNone)
{
/*HBufC* resTxCancelled = StringLoader::LoadLC(R_HTTP_TX_CANCELLED);
iObserver.ClientEvent(*resTxCancelled);
CleanupStack::PopAndDestroy(resTxCancelled);*/
return;
}
}
TBool ChelloHTTPEngine::GetCredentialsL( const TUriC8& aURI,
RString aRealm,
RStringF aAuthenticationType,
RString& aUsername,
RString& aPassword)
{
// aURI, aReal and aAuthenticationType are informational only. We only need
// to set aUsername and aPassword and return ETrue, if aUsername and
// aPassword are provided by user.

// Buffer for string parameters that may change order
CDesCArrayFlat* strings = new CDesCArrayFlat(2);
CleanupStack::PushL(strings);

// Initialize parameter buffer

// First parameter
HBufC* uri16 = HBufC::NewLC(aURI.UriDes().Length());
uri16->Des().Copy(aURI.UriDes());
strings->AppendL(*uri16);
CleanupStack::PopAndDestroy(uri16);

// Second parameter
HBufC* authType16 = HBufC::NewLC(aAuthenticationType.DesC().Length());
authType16->Des().Copy(aAuthenticationType.DesC());
strings->AppendL(*authType16);
CleanupStack::PopAndDestroy(authType16);

HBufC* resAuthNote = StringLoader::LoadLC(R_HTTP_AUTH_NOTE, *strings);
HBufC* resAuthRequired = StringLoader::LoadLC(R_HTTP_AUTH_REQUIRED);
CEikonEnv::Static()->InfoWinL(*resAuthRequired, *resAuthNote);

CleanupStack::PopAndDestroy(resAuthNote);
CleanupStack::PopAndDestroy(resAuthRequired);

// Query user name and password
TBuf<KDefaultBufferSize> userName;
TBuf<KDefaultBufferSize> password;
CAknMultiLineDataQueryDialog* dlg =
CAknMultiLineDataQueryDialog::NewL(userName, password);

if (!dlg->ExecuteLD(R_DIALOG_USER_PASSWORD_QUERY))
return EFalse; // No credentials given; must return EFalse

// Set aUsername and aPassword
TBuf8<KDefaultBufferSize> temp;
temp.Copy(userName);
TRAPD(err, aUsername = aRealm.Pool().OpenStringL(temp));
if (!err)
{
temp.Copy(password);
TRAP(err, aPassword = aRealm.Pool().OpenStringL(temp));
if (!err) return ETrue;
}

// Return ETrue if user has given credentials (username and password),
// otherwise EFlase
return EFalse;
}

void ChelloHTTPEngine:oHTTPGetL()
{
// Parse string to URI (as defined in RFC2396)
TUriParser8 uri;
uri.Parse(*iUri);

// Get request method string for HTTP GET
RStringF method = iSession.StringPool().StringF(HTTP::EGET,RHTTPSession::GetTable());

// Open transaction with previous method and parsed uri. This class will
// receive transaction events in MHFRunL and MHFRunError.
iTransaction = iSession.OpenTransactionL(uri, *this, method);
iTransactionOpen = ETrue;

// Set headers for request; user agent and accepted content type
RHTTPHeaders hdr = iTransaction.Request().GetHeaderCollection();
SetHeaderL(hdr, HTTP::EUserAgent, KUserAgent);
SetHeaderL(hdr, HTTP::EAccept, KAccept);

// Submit the transaction. After this the framework will give transaction
// events via MHFRunL and MHFRunError.
iTransaction.SubmitL();

/*HBufC* resConnecting = StringLoader::LoadLC(R_HTTP_CONNECTING);
iObserver.ClientEvent(*resConnecting);
CleanupStack::PopAndDestroy(resConnecting)*/;
}
void ChelloHTTPEngine::CancelTransaction()
{
iEngineState = EIdle;
delete iUri; iUri = NULL;
delete iContentType; iContentType = NULL;
delete iBody; iBody = NULL;

// Close() also cancels transaction (Cancel() can also be used but
// resources allocated by transaction must be still freed with Close())
if (iTransactionOpen)
{
iTransaction.Close();
iTransactionOpen = EFalse;
}
}

void ChelloHTTPEngine::RunL()
{
TInt statusCode = iStatus.Int();

if (!iConnectionSetupDone && statusCode == KErrNone)
{
// Connection done ok
iConnectionSetupDone = ETrue;
// Register for mobility API
//iMobility = CActiveCommsMobilityApiExt::NewL(iConnection, *this);
// Start selected HTTP action
switch (iEngineState)
{
case EIdle:
{
CancelTransaction();
break;
}
case EGet:
{
DoHTTPGetL();
break;
}
case EPost:
{
//DoHTTPPostL();
break;
}
};
}
}
void ChelloHTTPEngine:oCancel()
{
iConnection.Stop();
}

[symbianyucca]

Can you please try the original example with your Url ? and if it works, could you simply copy the h & cpp files with HTTP code into your project, that way you could get code which has been working into your project, and you could get it working as well.

[abhinavnishantintg]

I can not make a build for the example code. error shown->BLDMAKE ERROR: directory "\S60\devices\S60_3rd_FP2_SDK_v1.1\epoc32" does not exist

[vineet.jain]

Does the example code's location & SDK's location are on same drive on you pc?

[symbianyucca]

Does the example code's location & SDK's location are on same drive on you pc?

Yep, Symbian tools are often not taking account the drive letter, best option would be to put all parts (SDKs, IDE, code etc.) in C-Drive, though in theory it should work as long as all parts are at the same local-drive.