1 // wsp_resolver.h

     2 // 

     3 // Copyright (c) 2002 - 2010 Accenture. All rights reserved.

     4 // This component and the accompanying materials are made available

     5 // under the terms of the "Eclipse Public License v1.0"

     6 // which accompanies this distribution, and is available

     7 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 // 

     9 // Initial Contributors:

    10 // Accenture - Initial contribution

    11 //

    12 

    13 #ifndef __WSP_RESOLVER_H__

    14 #define __WSP_RESOLVER_H__

    15 

    16 #include <es_sock.h>

    17 #include <es_prot.h>

    18 #include "wsp_subsession.h"

    19 

    20 

    21 class RWin32Factory;

    22 class TInetAddr;

    23 

    24 

    25 class RWin32Resolver : public RWin32SubSession

    26 	{

    27 public:

    28 	RWin32Resolver();

    29 	TInt Open(RWin32Factory& aFactory);

    30 	void Close();

    31 	TInt GetByName(TNameRecord& aName, TRequestStatus& aStatus);

    32 	TInt GetByAddress(TNameRecord& aName, TRequestStatus& aStatus);

    33 	void Cancel();

    34 private:

    35 	TPtr8 iNameRecordPckg;

    36 	};

    37 

    38 

    39 class CWin32Resolver : public CWin32SubSession

    40 	{

    41 public:

    42 	enum TOppCode

    43 		{

    44 		EGetByName,

    45 		EGetByAddress,

    46 		ECancel

    47 		};

    48 public:

    49 	static CWin32Resolver* NewL(CWin32Scheduler& aScheduler);

    50 	virtual ~CWin32Resolver();

    51 private: // From CWin32ActiveObject.

    52 	virtual void Run();

    53 private: // From CWin32SubSession.

    54 	virtual void ServiceL(TWin32Message& aMessage);

    55 private:

    56 	CWin32Resolver(CWin32Scheduler& aScheduler);

    57 	void ConstructL();

    58 	void Cancel();

    59 	void CreateWorkerThread();

    60 private: // Methods used by the worker thread.

    61 	static TInt WorkerThreadStart(TAny* aPtr);

    62 	void GetByName();

    63 	void GetByAddress();

    64 private:

    65 	TWin32Message* iMessage;

    66 	RThread iWorkerThread;	// Synchronous name lookup calls are run in their own thread.

    67 							// This is because the asychronous versions use window messages rather event object, and so can't fit into this framework.

    68 	TInt iError;

    69 	TInt64 iRandSeed;

    70 	};

    71 

    72 

    73 class MWin32ResolverObserver

    74 	{

    75 public:

    76 	virtual void HandleWin32ResolverCompletion(TInt aError) = 0;

    77 	};

    78 

    79 

    80 class CWin32ResolverWrapper : public CActive

    81 	{

    82 public:

    83 	static CWin32ResolverWrapper* NewL(MWin32ResolverObserver& aObserver, RWin32Factory& aWin32Factory);

    84 	~CWin32ResolverWrapper();

    85 	TInt GetByName(TNameRecord& aName);

    86 	TInt GetByAddress(TNameRecord& aName);

    87 private: // From CActive.

    88 	virtual void DoCancel();

    89 	virtual void RunL();

    90 	virtual TInt RunError(TInt aError);

    91 public:

    92 	CWin32ResolverWrapper(MWin32ResolverObserver& aObserver);

    93 	void ConstructL(RWin32Factory& aWin32Factory);

    94 private:

    95 	MWin32ResolverObserver& iObserver;

    96 	RWin32Resolver iWin32Resolver;

    97 	};

    98 

    99 

   100 class CWinSockResolver : public CHostResolvProvdBase, public MWin32ResolverObserver

   101 	{

   102 public:

   103 	static CWinSockResolver* NewL(RWin32Factory& aFactory);

   104 	virtual ~CWinSockResolver();

   105 private: // From CResolverProvdBase.

   106 	virtual void CancelCurrentOperation();

   107 private: // From CHostResolvProvdBase.

   108 	virtual void GetByName(TNameRecord& aName);

   109 	virtual void GetByAddress(TNameRecord& aName);

   110 	virtual void SetHostName(TDes& aNameBuf);

   111 	virtual void GetHostName(TDes& aNameBuf);

   112 private: // From MWin32ResolverObserver.

   113 	virtual void HandleWin32ResolverCompletion(TInt aError);

   114 private:

   115 	CWinSockResolver();

   116 	void ConstructL(RWin32Factory& aFactory);

   117 private:

   118 	CWin32ResolverWrapper* iResolverWrapper;

   119 	};

   120 

   121 

   122 #endif // __WSP_RESOLVER_H__