author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 31 Aug 2010 16:17:46 +0300 | |
branch | RCL_3 |
changeset 93 | 79859ed3eea9 |
parent 37 | cb62a4f66ebe |
child 94 | 919f36ff910f |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the License "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: A class that fetches resources via HTTP 1.1. |
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* |
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*/ |
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#ifndef HTTP_HANDLER_H |
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#define HTTP_HANDLER_H |
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// INCLUDES |
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#include <e32base.h> |
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#include <http/mhttptransactioncallback.h> |
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#include <http/rhttpheaders.h> |
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#include <http/rhttptransaction.h> |
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#include "HttpConnection.h" |
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#include "LeakTracker.h" |
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#include "UrlHandler.h" |
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// CONSTANTS |
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// MACROS |
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// DATA TYPES |
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// FUNCTION PROTOTYPES |
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// FORWARD DECLARATIONS |
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class CTimer; |
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class RHTTPSession; |
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class RStringPool; |
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// CLASS DECLARATION |
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/** |
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* A class that fetches resources via HTTP 1.1. |
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* |
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* \b Library: FeedsEngine.lib |
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* |
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* @since 3.0 |
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*/ |
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class CHttpHandler: public CUrlHandler, public MHttpConnectionObserver, |
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public MHTTPTransactionCallback |
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{ |
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public: // Constructors and destructor |
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/** |
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* Two-phased constructor. |
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*/ |
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static CHttpHandler* NewL(CHttpConnection& aHttpConnection); |
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/** |
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* Destructor. |
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*/ |
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virtual ~CHttpHandler(); |
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public: // From CUrlHandler |
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/** |
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* Loads the given url -- asynchronously |
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* |
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* @since 3.0 |
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* @param aUrl The url to load |
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* @param aObserver The load observer. |
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* @return void. |
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*/ |
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virtual void LoadUrlL(const TDesC& aUrl, MLoadObserver& aObserver); |
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public: // From MHttpConnectionObserver |
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/** |
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* Notifies the observer that the connection is available. |
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* |
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* @since 3.0 |
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* @return |
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*/ |
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virtual void ConnectionAvailable(); |
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/** |
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* Notifies the observer that the establishment of the connection failed. |
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* |
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* @since 3.0 |
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* @param aStatus The reason for the failure. |
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* @return |
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*/ |
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virtual void ConnectionFailed(TInt aStatus); |
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public: // From MHTTPTransactionCallback |
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/** |
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* Called when the filter's registration conditions are satisfied for events that |
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* occur on a transaction. |
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* |
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* @since 3.0 |
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* @param aTransaction The transaction that the event has occurred on. |
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* @param aEvent The event that has occurred. |
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* @return void. |
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*/ |
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virtual void MHFRunL(RHTTPTransaction aTransaction, const THTTPEvent& aEvent); |
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/** |
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* Called when RunL leaves from a transaction event. This works in the same |
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* way as CActve::RunError; return KErrNone if you have handled the error. |
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* |
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* @since 3.0 |
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* @param aError The leave code that RunL left with. |
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* @param aTransaction The transaction that was being processed. |
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* @param aEvent The Event that was being processed. |
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* @return KErrNone if the error has been cancelled or the code |
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* of the continuing error otherwise. |
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*/ |
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virtual TInt MHFRunError(TInt aError, RHTTPTransaction aTransaction, |
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const THTTPEvent& aEvent); |
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private: |
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/** |
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* C++ default constructor. |
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*/ |
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CHttpHandler(CHttpConnection& aHttpConnection); |
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/** |
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* By default Symbian 2nd phase constructor is private. |
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*/ |
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void ConstructL(); |
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/** |
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* Cleanup stack callback method to release a DataSupplier. |
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* |
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* @since 3.0 |
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* @param aPtr A libxml2 document ptr. |
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* @return void. |
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*/ |
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static void CleanupDataSupplier(TAny *aPtr); |
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/** |
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* Get the content-type and char-encoding from the response header. |
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* |
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* @since 3.0 |
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* @param aContentType The content-type. |
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* @param aCharSet The char-encoding. |
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* @return void. |
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*/ |
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void GetContentTypeL(TDesC*& aContentType, TDesC*& aCharSet); |
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/** |
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* Passes the status code and responseBody to the observer. The observer |
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* adopts aResponseBody. |
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* |
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* @since 3.0 |
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* @param aStatusCode The status code - normalized to the http response codes. |
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* @param aResponseBody The response body or NULL. |
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* @param aContentType The content-type. |
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* @param aCharSet The char-encoding. |
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* @return void. |
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*/ |
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void LoadCompleted(TInt aStatusCode, TDesC8* aResponseBody, |
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const TDesC& aContentType, const TDesC& aCharSet); |
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/** |
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* The timer's callback used to abort connections that stop responding. |
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* |
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* @since 3.0 |
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* @param aPtr Holds the iTimerState pointer. |
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* @return An error code. |
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*/ |
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static TInt TimerCallback(TAny* aPtr); |
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private: |
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const TTimeIntervalMicroSeconds32 KTimerPeriod; |
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TLeakTracker iLeakTracker; |
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CHttpConnection* iHttpConnection; |
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TBool iIsConnectionObserver; |
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RHTTPSession& iSession; |
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RStringPool iStringPool; |
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RHTTPTransaction iTransaction; |
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RHTTPHeaders iRespHeaders; |
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RHTTPHeaders iUserAgentHeader; |
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MLoadObserver* iObserver; |
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HBufC8* iResponseBuffer; |
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CPeriodic* iTimer; |
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TCallBack iTimerState; |
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TTime iLastActivity; |
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TInt iStatusCode; |
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}; |
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#endif // HTTP_HANDLER_H |
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// End of File |