What does HTTPCLIENT 5 panic means?

[gigglie]

Hello I was tryng an http connection engine and the following line pops in the code .

void CPMHttpEngine::DoPostL(/*const TDesC& connectUrl*/)
	{
	/*TBuf8<connectUrl.Length()> buf8;
	buf8.Copy(connectUrl);*/
	TUriParser8 uri;
//	User::LeaveIfError(uri.Parse(buf8));
	User::LeaveIfError(uri.Parse(iUrl));
			
	// Get request method string for HTTP POST
	//RStringF method = iHttpSession.StringPool().StringF(HTTP::EPOST, RHTTPSession::GetTable());
	RStringF method = iHttpSession.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 = iHttpSession.OpenTransactionL(uri, *this, method);
#ifndef __WINS__ 
	CHttpFilterProxyInterface::InstallFilterL(iHttpSession);
#endif
	// Set headers for request; user agent, accepted content type and body's 
	// content type.
	RHTTPHeaders hdr = iTransaction.Request().GetHeaderCollection();
	SetHeaderL(hdr, HTTP::EUserAgent, KUserAgent);
	SetHeaderL(hdr, HTTP::EAccept, KAccept);
	//SetHeaderL(hdr, HTTP::EContentType, KContentTypeForm);

   	//iTransaction.Request().SetBody(*iHttpForm); 	

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

	iRunning = ETrue;
	if (iHttpForm == iGetTasksForm)
		{
		iTransactionObserver->ConnectingToServerL(ETrue);
		}
	else
		{
		iTransactionObserver->ConnectingToServerL(EFalse);
		}
	}

void CPMHttpEngine::MHFRunL(RHTTPTransaction aTransaction, const THTTPEvent& aEvent)
	{
	MHTTPDataSupplier* body = aTransaction.Response().Body();
	switch (aEvent.iStatus) 
		{
		case THTTPEvent::EGotResponseHeaders:
			{
			// HTTP response headers have been received. Use
			// aTransaction.Response() to get the response. However, it's not
			// necessary to do anything with the response when this event occurs.

			RHTTPResponse resp = aTransaction.Response();
			TInt status = resp.StatusCode();
			RStringF statusStr = resp.StatusText();
			TBuf<32> statusStr16;
			statusStr16.Copy(statusStr.DesC());
			TBuf<100> header;
			_LIT(KHeader,"Header=>Status =");
			header.Copy(KHeader);
			header.Append(statusStr16);
			_LIT(Ksep,"       Body=");
			header.Append(Ksep);
			iParent->iLog.Write(header);
			// iUtils.Test().Printf(_L("Status: %d (%S)\n"), status, &statusStr16);    *** Shrikanta ***

			}
			break;

		case THTTPEvent::EGotResponseBodyData:
			{
//			MHTTPDataSupplier* body = aTransaction.Response().Body();
			TPtrC8 dataChunk;
//			TInt totsize=body->OverallDataSize();
			
			TBool val=body->GetNextDataPart(dataChunk);
			body->ReleaseData();
			WriteDataL(dataChunk);			
			}
			break;
			
			// Indicates that header & body of response is completely received.
		case THTTPEvent::EResponseComplete:
			{
//			MHTTPDataSupplier* body = aTransaction.Response().Body();
			TPtrC8 dataChunk;
//			TInt totsize=body->OverallDataSize();
************************ERROR*********
			body->GetNextDataPart(dataChunk);
****************************************
			body->ReleaseData();
			WriteDataL(dataChunk);
						}
//			break;
		
		// Indicates that transaction succeeded.
		case THTTPEvent::ESucceeded:
			{
			iTransaction.Close();
			iRunning = EFalse;
			iParent->iLog.Write(iReceivedData->Des());
			CResponse* response = CResponse::NewLC(iMode,iParent);
			TRAPD(error,
					response->InputDataL(*iReceivedData);
					iTransactionObserver->SuccessL(*response);
					CheckRefreshL();)
					PanicIfError(error);

					CleanupStack::PopAndDestroy(response);						
			}
			break;

		// Transaction completed with failure.
		case THTTPEvent::EFailed:
			{			 
			iTransaction.Close();
			iRunning = EFalse;

			// After transaction has been closed, leaves are no 
			// longer handled by the calling active object.
			TRAPD(error,
			iTransactionObserver->FailedL(0);
			CheckRefreshL();)
			PanicIfError(error);
			}
			break;

		default:
			// There are more events in THTTPEvent, but they are not usually 
			// needed. However, event status smaller than zero should be handled 
			// correctly since it's error.
			{
			if (aEvent.iStatus < 0)
				{
				// Just close the transaction on errors
				iTransaction.Close();
				iRunning = EFalse;
				
				// After transaction has been closed, leaves are no 
				// longer handled by the calling active object.
				TRAPD(error,
				iTransactionObserver->FailedL(aEvent.iStatus);
				CheckRefreshL();)
				PanicIfError(error);
				} 
			else 
				{
				// Other events are not errors (e.g. permanent and temporary
				// redirections)
				}
			}
			break;
		}
	}

[wizard_hu_]

There is no Body for EResponseComplete as I know.

[JacksonZih]

You could try checking the System Panic Reference, in the reference that comes with the SDK. Maybe you already know this but it's in the folder S60Doc (in the sdk), generally with the name of symbian_devlib.chm. On the help tree, go Symbian OS vx.x/Symbian OS Reference/System Panic Reference.

Cheers!

[gigglie]

There is no Body for EResponseComplete as I know.

There was none too . But on debugging I saw that when the response come in parts the in last loop control enters
THTTPEvent::EResponseComplete: and not EGotResponseBodyData: .Looging the response in a logfile i can see that last data part is expected which should be coming down with last loop so I just copy pasted the EGotResponseBodyData: code in EResponseComplete:. to see.

[DmitryZayats]

There was none too . But on debugging I saw that when the response come in parts the in last loop control enters
THTTPEvent::EResponseComplete: and not EGotResponseBodyData: .Looging the response in a logfile i can see that last data part is expected which should be coming down with last loop so I just copy pasted the EGotResponseBodyData: code in EResponseComplete:. to see.

Was you able to get a full body data?
My problem is - when I try to debug on epoc - everything works.
When I do debug on real device - as body data I get something like this

<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\"\n \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">\n<html xmlns=\"h\x0200\x0100

But the actual html file is only 4 lines
<html>
<body>
Test
</body>
</html>


Can't get the real content "Test".

[MehulPatel]

Hi,

I am having this same problem....

My server sends response in <html><body>Some other tags + data</body></html> and I get the same response on Emulator and NokiaE62 device but when testing on Nokia N95 device I get something like...

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body>..... Further data here......

The problem is some of the important tags in the response data are missing on N95 device. How did you solve this issue? what is the cause of this behavior?

I have referred WebClient example to write HTTP Request/Response code. Here the problem is that the code works well when I first time connect. But when I post second request it crashes the device. The WebClient code also crashes when you send second request... I am not sure how do I send multiple (one by one) request to my server.

Any help or pointer is much appreciated. Thanks

Regards,
Mehul

Regards,

[wizard_hu_]

You should check the user-agent string, that is the only way a web-server can differentiate between clients.