casynnet.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #if !defined( __CASYNNET_H )
- #define __CASYNNET_H
- #include "hxtypes.h"
- #include "conn.h"
- #include "platform/win/win_net.h"
- #include "hxthread.h"
- #include "hxassert.h"
- #define CLASS_NAME_CASYNCSOCK "HX_Internal_Sock_Async"
- // Predeclare these guys so we don't have to include their header files
- class win_net;
- class CHXMapPtrToPtr;
- class DNS_REQUEST
- {
- public:
- DNS_REQUEST();
- ~DNS_REQUEST();
- win_net* fpSock;
- char* lpHostName;
- char* lpBuffer;
- int cbBufferSize;
- };
- class CAsyncSockN
- {
- public:
- // Client Sockets call this guy to get a Notifier, either created or
- // an already created socket notifier.
- // Guaranteed to return either NULL or a valid Notifier
- static CAsyncSockN* GetCAsyncSockNotifier(HINSTANCE hInst,
- BOOL Create = FALSE);
- // No reason why these should fail unless win_net is invalid
- BOOL DoAsyncDNS(win_net* fpSock, LPCSTR lpHostName,
- LPSTR pBuff, int cbBuffLen);
- BOOL DoAsyncSelect(win_net* fpSock);
- BOOL CancelSelect(win_net* fpSock);
- protected:
- /*
- * Class Private Utility Methods
- */
- static ULONG32 GetSession();
- // Hidden constructor
- CAsyncSockN(HINSTANCE hInst);
- // Internal create helper
- BOOL Create();
- // Hidden Destructor
- ~CAsyncSockN();
- // Validates the object
- BOOL IsValid()
- {
- return(m_bValid);
- }
- // Decrements our client count
- void DecrementHandlesClientCount()
- {
- HX_ASSERT(m_cbNumHandlesClients > 0);
- m_cbNumHandlesClients--;
- }
- void DecrementSocketsClientCount()
- {
- HX_ASSERT(m_cbNumSocketsClients > 0);
- m_cbNumSocketsClients--;
- }
- void IncrementSocketsClientCount()
- {
- m_cbNumSocketsClients++;
- }
- void IncrementHandlesClientCount()
- {
- m_cbNumHandlesClients++;
- }
-
- // These are the definitions of the messages our WndProc handles
- enum
- {
- // Internally used message for introducing latency between deletes
- PWM_CHECK_CLIENTS = WM_USER + 100,
- // AsyncSelect Notification for one of our clients
- PWM_ASYNC_SELECT,
- // Async DNS Notification
- PWM_ASYNC_DNS,
- };
- // WndProc for our notifier
- static LRESULT HXEXPORT AsyncNotifyProc(HWND hWnd, UINT msg,
- WPARAM wParam, LPARAM lParam);
- // Dispatched methods from the WndProc
- LRESULT OnAsyncDNS(WPARAM wParam, LPARAM lParam);
- LRESULT OnAsyncSelect(WPARAM wParam, LPARAM lParam);
- // cleanup if class is not used by any clients
- LRESULT CheckClients();
- // Linked list of US management functions
- // Inserts us at the head of the list
- static void LinkUs(CAsyncSockN* pUs);
- // Removes us from the list
- static void UnlinkUs(CAsyncSockN* pUs);
- // Finds a notifier for the current thread in the linked list
- static CAsyncSockN* FindSockNotifier();
- /*
- * Class private data members
- */
- // Don't try to register multiple times
- static BOOL zm_bClassRegistered;
- // Points to the head of a list of CAsyncSockN objects so we don't
- // create one for each win_net object (only per thread or per task)
- static CAsyncSockN* zm_pSockNotifiers;
- // Store the link in a nonstatic member
- CAsyncSockN* m_pNextNotifier;
- HWND m_hWnd;
- BOOL m_bValid;
- // Win32 this is the thread ID, Win16 this is the current task
- ULONG32 m_ulSession;
- HINSTANCE m_hInst;
- // Our WndProc recieves either Async DNS handles or Socket handles
- // and needs to convert these to the win_net object they correspond to.
- // Map that holds our client objects mapped from Async Handles
- CHXMapPtrToPtr* m_ClientHandlesMap;
- int m_cbNumHandlesClients;
- // Map that holds our client objects mapped from Socket Handles
- CHXMapPtrToPtr* m_ClientSocketsMap;
- int m_cbNumSocketsClients;
- BOOL m_bInCancelMode;
- BOOL ProcessDNSQueue();
- };
- class SockGlobals
- {
- public:
- BOOL m_bWinSock2Suck;
- CHXSimpleList m_DNSQueue;
- SockGlobals();
- ~SockGlobals();
- };
- extern SockGlobals sockGlobals;
- #endif // __CASYNNET_H