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//Download by http://www.NewXing.com /*CAsyncSocketEx by Tim Kosse (Tim.Kosse@gmx.de) Version 1.2 (2003-03-28) -------------------------------------------------------- Introduction: ------------- CAsyncSocketEx is a replacement for the MFC class CAsyncSocket. This class was written because CAsyncSocket is not the fastest WinSock wrapper and it's very hard to add new functionality to CAsyncSocket derived classes. This class offers the same functionality as CAsyncSocket. Also, CAsyncSocketEx offers some enhancements which were not possible with CAsyncSocket without some tricks. How do I use it? ---------------- Basically exactly like CAsyncSocket. To use CAsyncSocketEx, just replace all occurrences of CAsyncSocket in your code with CAsyncSocketEx, if you did not enhance CAsyncSocket yourself in any way, you won't have to change anything else in your code. Why is CAsyncSocketEx faster? ----------------------------- CAsyncSocketEx is slightly faster when dispatching notification event messages. First have a look at the way CAsyncSocket works. For each thread that uses CAsyncSocket, a window is created. CAsyncSocket calls WSAAsyncSelect with the handle of that window. Until here, CAsyncSocketEx works the same way. But CAsyncSocket uses only one window message (WM_SOCKET_NOTIFY) for all sockets within one thread. When the window recieve WM_SOCKET_NOTIFY, wParam contains the socket handle and the window looks up an CAsyncSocket instance using a map. CAsyncSocketEx works differently. It's helper window uses a wide range of different window messages (WM_USER through 0xBFFF) and passes a different message to WSAAsyncSelect for each socket. When a message in the specified range is received, CAsyncSocketEx looks up the pointer to a CAsyncSocketEx instance in an Array using the index of message - WM_USER. As you can see, CAsyncSocketEx uses the helper window in a more efficient way, as it don't have to use the slow maps to lookup it's own instance. Still, speed increase is not very much, but it may be noticeable when using a lot of sockets at the same time. Please note that the changes do not affect the raw data throughput rate, CAsyncSocketEx only dispatches the notification messages faster. What else does CAsyncSocketEx offer? ------------------------------------ CAsyncSocketEx offers a flexible layer system. One example is the proxy layer. Just create an instance of the proxy layer, configure it and add it to the layer chain of your CAsyncSocketEx instance. After that, you can connect through proxies. Benefit: You don't have to change much to use the layer system. Another layer that is currently in development is the SSL layer to establish SSL encrypted connections. License ------- Feel free to use this class, as long as you don't claim that you wrote it and this copyright notice stays intact in the source files. If you use this class in commercial applications, please send a short message to tim.kosse@gmx.de */ #include "stdafx.h" #include "DebugHelpers.h" #include "AsyncSocketEx.h" #include "wtypes.h" #include "oleauto.h" #include "atlconv.h" #ifndef NOLAYERS #include "AsyncSocketExLayer.h" #endif //NOLAYERS #ifdef _DEBUG #undef THIS_FILE static char THIS_FILE[]=__FILE__; #define new DEBUG_NEW #endif #ifndef CCRITICALSECTIONWRAPPERINCLUDED class CCriticalSectionWrapper { public: CCriticalSectionWrapper() { InitializeCriticalSection(&m_criticalSection); } ~CCriticalSectionWrapper() { DeleteCriticalSection(&m_criticalSection); } void Lock() { EnterCriticalSection(&m_criticalSection); } void Unlock() { LeaveCriticalSection(&m_criticalSection); } protected: CRITICAL_SECTION m_criticalSection; }; #define CCRITICALSECTIONWRAPPERINCLUDED #endif CCriticalSectionWrapper CAsyncSocketEx::m_sGlobalCriticalSection; CAsyncSocketEx::t_AsyncSocketExThreadDataList *CAsyncSocketEx::m_spAsyncSocketExThreadDataList=0; #ifndef _AFX #ifndef VERIFY #define VERIFY(x) (void(x)) #endif //VERIFY #ifndef ASSERT #define ASSERT(x) #endif //ASSERT #endif //_AFX ///////////////////////////// //Helper Window class class CAsyncSocketExHelperWindow { public: CAsyncSocketExHelperWindow() { //Initialize data m_pAsyncSocketExWindowData=new t_AsyncSocketExWindowData[512]; //Reserve space for 512 active sockets memset(m_pAsyncSocketExWindowData, 0, 512*sizeof(t_AsyncSocketExWindowData)); m_nWindowDataSize=512; m_nSocketCount=0; m_nWindowDataPos=0; //Create window WNDCLASSEX wndclass; wndclass.cbSize=sizeof wndclass; wndclass.style=0; wndclass.lpfnWndProc=WindowProc; wndclass.cbClsExtra=0; wndclass.cbWndExtra=0; wndclass.hInstance=GetModuleHandle(0); wndclass.hIcon=0; wndclass.hCursor=0; wndclass.hbrBackground=0; wndclass.lpszMenuName=0; wndclass.lpszClassName=_T("CAsyncSocketEx Helper Window"); wndclass.hIconSm=0; RegisterClassEx(&wndclass); m_hWnd=CreateWindow(_T("CAsyncSocketEx Helper Window"), _T("CAsyncSocketEx Helper Window"), 0, 0, 0, 0, 0, 0, 0, 0, GetModuleHandle(0)); ASSERT(m_hWnd); SetWindowLong(m_hWnd, GWL_USERDATA, (LONG)this); }; virtual ~CAsyncSocketExHelperWindow() { //Clean up socket storage delete [] m_pAsyncSocketExWindowData; m_pAsyncSocketExWindowData=0; m_nWindowDataSize=0; m_nSocketCount=0; //Destroy window if (m_hWnd) { DestroyWindow(m_hWnd); m_hWnd=0; } } //Adds a socket to the list of attached sockets BOOL AddSocket(CAsyncSocketEx *pSocket, int &nSocketIndex) { ASSERT(pSocket); if (!m_nWindowDataSize) { ASSERT(!m_nSocketCount); m_nWindowDataSize=512; m_pAsyncSocketExWindowData=new t_AsyncSocketExWindowData[512]; //Reserve space for 512 active sockets memset(m_pAsyncSocketExWindowData, 0, 512*sizeof(t_AsyncSocketExWindowData)); } if (nSocketIndex!=-1) { ASSERT(m_pAsyncSocketExWindowData); ASSERT(m_nWindowDataSize>nSocketIndex); ASSERT(m_pAsyncSocketExWindowData[nSocketIndex].m_pSocket==pSocket); ASSERT(m_nSocketCount); return TRUE; } //Increase socket storage if too small if (m_nSocketCount>=(m_nWindowDataSize-10)) { int nOldWindowDataSize=m_nWindowDataSize; ASSERT(m_nWindowDataSize<MAX_SOCKETS); m_nWindowDataSize+=512; if (m_nWindowDataSize>MAX_SOCKETS) m_nWindowDataSize=MAX_SOCKETS; t_AsyncSocketExWindowData *tmp=m_pAsyncSocketExWindowData; m_pAsyncSocketExWindowData = new t_AsyncSocketExWindowData[m_nWindowDataSize]; memcpy(m_pAsyncSocketExWindowData, tmp, nOldWindowDataSize * sizeof(t_AsyncSocketExWindowData)); memset(m_pAsyncSocketExWindowData+nOldWindowDataSize, 0, (m_nWindowDataSize-nOldWindowDataSize)*sizeof(t_AsyncSocketExWindowData)); delete [] tmp; } //Search for free slot for (int i=m_nWindowDataPos;i<(m_nWindowDataSize+m_nWindowDataPos);i++) { if (!m_pAsyncSocketExWindowData[i%m_nWindowDataSize].m_pSocket) { m_pAsyncSocketExWindowData[i%m_nWindowDataSize].m_pSocket=pSocket; nSocketIndex=i%m_nWindowDataSize; m_nWindowDataPos=(i+1)%m_nWindowDataSize; m_nSocketCount++; return TRUE; } } //No slot found, maybe there are too much sockets! return FALSE; } //Removes a socket from the socket storage BOOL RemoveSocket(CAsyncSocketEx *pSocket, int &nSocketIndex) { ASSERT(pSocket); if (nSocketIndex==-1) return TRUE; ASSERT(m_pAsyncSocketExWindowData); ASSERT(m_nWindowDataSize>0); ASSERT(m_nSocketCount>0); ASSERT(m_pAsyncSocketExWindowData[nSocketIndex].m_pSocket==pSocket); m_pAsyncSocketExWindowData[nSocketIndex].m_pSocket=0; nSocketIndex=-1; m_nSocketCount--; return TRUE; } //Processes event notifications sent by the sockets or the layers static LRESULT CALLBACK WindowProc( HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam ) { #ifdef USE_CLIENT_TCP_CATCH_ALL_HANDLER try { #endif if (message>=WM_SOCKETEX_NOTIFY) { //Verify parameters ASSERT(hWnd); CAsyncSocketExHelperWindow *pWnd=(CAsyncSocketExHelperWindow *)GetWindowLong(hWnd, GWL_USERDATA); ASSERT(pWnd); if (message<static_cast<UINT>(WM_SOCKETEX_NOTIFY+pWnd->m_nWindowDataSize)) //Index is within socket storage { //Lookup socket and verify if it's valid CAsyncSocketEx *pSocket=pWnd->m_pAsyncSocketExWindowData[message-WM_SOCKETEX_NOTIFY].m_pSocket; SOCKET hSocket=wParam; if (!pSocket) return 0; if (hSocket==INVALID_SOCKET) return 0; if (pSocket->m_SocketData.hSocket!=hSocket) return 0; int nEvent=lParam&0xFFFF; int nErrorCode=lParam>>16; //Dispatch notification #ifndef NOLAYERS if (!pSocket->m_pFirstLayer) { #endif //NOLAYERS //Dispatch to CAsyncSocketEx instance switch (nEvent) { case FD_READ: { DWORD nBytes; if (!pSocket->IOCtl(FIONREAD, &nBytes)) nErrorCode = WSAGetLastError(); if (nBytes != 0 || nErrorCode != 0) pSocket->OnReceive(nErrorCode); } break; case FD_FORCEREAD: //Forceread does not check if there's data waiting pSocket->OnReceive(nErrorCode); break; case FD_WRITE: pSocket->OnSend(nErrorCode); break; case FD_CONNECT: pSocket->OnConnect(nErrorCode); break; case FD_ACCEPT: pSocket->OnAccept(nErrorCode); break; case FD_CLOSE: pSocket->OnClose(nErrorCode); break; } } #ifndef NOLAYERS else //Dispatch notification to the lowest layer { if (nEvent==FD_READ) { DWORD nBytes; if (!pSocket->IOCtl(FIONREAD, &nBytes)) nErrorCode = WSAGetLastError(); if (nBytes != 0 || nErrorCode != 0) pSocket->m_pLastLayer->CallEvent(nEvent, nErrorCode); } else pSocket->m_pLastLayer->CallEvent(nEvent, nErrorCode); } } #endif //NOLAYERS return 0; } #ifndef NOLAYERS else if (message==WM_SOCKETEX_TRIGGER) //Notification event sent by a layer { //Verify parameters, lookup socket and notification message if (!wParam) return 0; CAsyncSocketEx *pSocket=(CAsyncSocketEx *)wParam; CAsyncSocketExLayer::t_LayerNotifyMsg *pMsg=(CAsyncSocketExLayer::t_LayerNotifyMsg *)lParam; if (pSocket->m_SocketData.hSocket==INVALID_SOCKET) { delete pMsg; return 0; } int nEvent=pMsg->lEvent&0xFFFF; int nErrorCode=pMsg->lEvent>>16; //Dispatch to layer if (pMsg->pLayer) pMsg->pLayer->CallEvent(nEvent, nErrorCode); else { //Dispatch to socket class switch (nEvent) { case FD_READ: if (pSocket->m_lEvent&FD_READ) pSocket->OnReceive(nErrorCode); break; case FD_FORCEREAD: if (pSocket->m_lEvent&FD_FORCEREAD) pSocket->OnReceive(nErrorCode); break; case FD_WRITE: if (pSocket->m_lEvent&FD_WRITE) pSocket->OnSend(nErrorCode); break; case FD_CONNECT: if (pSocket->m_lEvent&FD_CONNECT) pSocket->OnConnect(nErrorCode); break; case FD_ACCEPT: if (pSocket->m_lEvent&FD_ACCEPT) pSocket->OnAccept(nErrorCode); break; case FD_CLOSE: if (pSocket->m_lEvent&FD_CLOSE) pSocket->OnClose(nErrorCode); break; } } delete pMsg; return 0; } #endif //NOLAYERS else if (message == WM_SOCKETEX_GETHOST) { //WSAAsyncGetHostByName reply //Verify parameters ASSERT(hWnd); CAsyncSocketExHelperWindow *pWnd=(CAsyncSocketExHelperWindow *)GetWindowLong(hWnd, GWL_USERDATA); ASSERT(pWnd); CAsyncSocketEx *pSocket = NULL; for (int i=0; i<pWnd->m_nWindowDataSize; i++) { pSocket = pWnd->m_pAsyncSocketExWindowData[i].m_pSocket; if (pSocket && pSocket->m_hAsyncGetHostByNameHandle && pSocket->m_hAsyncGetHostByNameHandle == (HANDLE)wParam) break; } if (i == pWnd->m_nWindowDataSize) return 0; int nErrorCode = lParam >> 16; if (nErrorCode) { pSocket->OnConnect(nErrorCode); return 0; } SOCKADDR_IN sockAddr; memset(&sockAddr,0,sizeof(sockAddr)); sockAddr.sin_family=AF_INET; sockAddr.sin_addr.s_addr = ((LPIN_ADDR)((LPHOSTENT)pSocket->m_pAsyncGetHostByNameBuffer)->h_addr)->s_addr; sockAddr.sin_port = htons(pSocket->m_nAsyncGetHostByNamePort); BOOL res = pSocket->Connect((SOCKADDR*)&sockAddr, sizeof(sockAddr)); delete [] pSocket->m_pAsyncGetHostByNameBuffer; pSocket->m_pAsyncGetHostByNameBuffer=0; pSocket->m_hAsyncGetHostByNameHandle=0; if (!res) if (GetLastError()!=WSAEWOULDBLOCK) pSocket->OnConnect(GetLastError()); return 0; } return DefWindowProc(hWnd, message, wParam, lParam); #ifdef USE_CLIENT_TCP_CATCH_ALL_HANDLER } catch(CException* e){ TCHAR szError[1024]; e->GetErrorMessage(szError, ARRSIZE(szError)); const CRuntimeClass* pRuntimeClass = e->GetRuntimeClass(); LPCTSTR pszClassName = (pRuntimeClass) ? pRuntimeClass->m_lpszClassName : NULL; if (!pszClassName) pszClassName = _T("CException"); TRACE("*** Unknown %s exception in CAsyncSocketExHelperWindow::WindowProc - %s\n", pszClassName, szError); e->Delete(); } catch (...) { // TODO: This exception handler should definitively *not* be here. Though we seem to need it to // catch some very strange crashs which deal with socket deletion problems in the client's TCP socket. TRACE("*** Unknown exception in CAsyncSocketExHelperWindow::WindowProc\n"); ASSERT(0); } #endif return 0; } HWND CAsyncSocketExHelperWindow::GetHwnd() { return m_hWnd; } private: HWND m_hWnd; struct t_AsyncSocketExWindowData { CAsyncSocketEx *m_pSocket; } *m_pAsyncSocketExWindowData; int m_nWindowDataSize; int m_nWindowDataPos; int m_nSocketCount; }; ////////////////////////////////////////////////////////////////////// // Konstruktion/Destruktion ////////////////////////////////////////////////////////////////////// CAsyncSocketEx::CAsyncSocketEx() { m_SocketData.hSocket=INVALID_SOCKET; m_SocketData.nSocketIndex=-1; m_pLocalAsyncSocketExThreadData=0; #ifndef NOLAYERS m_pFirstLayer=0; m_pLastLayer=0; #endif //NOLAYERS m_pAsyncGetHostByNameBuffer = NULL; m_hAsyncGetHostByNameHandle = NULL; } CAsyncSocketEx::~CAsyncSocketEx() { Close(); FreeAsyncSocketExInstance(); } BOOL CAsyncSocketEx::Create( UINT nSocketPort /*=0*/, int nSocketType /*=SOCK_STREAM*/, long lEvent /*=FD_READ | FD_WRITE | FD_OOB | FD_ACCEPT | FD_CONNECT | FD_CLOSE*/, LPCTSTR lpszSocketAddress /*=NULL*/, BOOL bReuseAddr /*=FALSE*/ ) { ASSERT(GetSocketHandle()==INVALID_SOCKET); //Close the socket, although this should not happen if (GetSocketHandle() != INVALID_SOCKET) { WSASetLastError(WSAEALREADY); return FALSE; } BOOL res=InitAsyncSocketExInstance(); ASSERT(res); if (!res) { WSASetLastError(WSANOTINITIALISED); return FALSE; } #ifndef NOLAYERS if (m_pFirstLayer) return m_pFirstLayer->Create(nSocketPort, nSocketType, lEvent, lpszSocketAddress); else #endif //NOLAYERS { SOCKET hSocket=socket(AF_INET, nSocketType, 0); if (hSocket==INVALID_SOCKET) return FALSE; m_SocketData.hSocket=hSocket; AttachHandle(hSocket); if (!AsyncSelect(lEvent)) { Close(); return FALSE; } #ifndef NOLAYERS if (m_pFirstLayer) { if (WSAAsyncSelect(m_SocketData.hSocket, GetHelperWindowHandle(), m_SocketData.nSocketIndex+WM_SOCKETEX_NOTIFY, FD_READ | FD_WRITE | FD_OOB | FD_ACCEPT | FD_CONNECT | FD_CLOSE) ) { Close(); return FALSE; } } #endif //NOLAYERS if (bReuseAddr) { // Has to be done right before binding the socket! int iOptVal = 1; VERIFY( SetSockOpt(SO_REUSEADDR, &iOptVal, sizeof iOptVal) ); } if (!Bind(nSocketPort, lpszSocketAddress)) { Close(); return FALSE; } return TRUE; } } void CAsyncSocketEx::OnReceive(int nErrorCode) { } void CAsyncSocketEx::OnSend(int nErrorCode) { } void CAsyncSocketEx::OnConnect(int nErrorCode) { } void CAsyncSocketEx::OnAccept(int nErrorCode) { } void CAsyncSocketEx::OnClose(int nErrorCode) { } BOOL CAsyncSocketEx::Bind(UINT nSocketPort, LPCTSTR lpszSocketAddress) { USES_CONVERSION; SOCKADDR_IN sockAddr; memset(&sockAddr,0,sizeof(sockAddr)); LPSTR lpszAscii = T2A((LPTSTR)lpszSocketAddress); sockAddr.sin_family = AF_INET; if (lpszAscii == NULL) sockAddr.sin_addr.s_addr = htonl(INADDR_ANY); else { DWORD lResult = inet_addr(lpszAscii); if (lResult == INADDR_NONE) { WSASetLastError(WSAEINVAL); return FALSE; } sockAddr.sin_addr.s_addr = lResult; } sockAddr.sin_port = htons((u_short)nSocketPort); return Bind((SOCKADDR*)&sockAddr, sizeof(sockAddr)); } BOOL CAsyncSocketEx::Bind(const SOCKADDR* lpSockAddr, int nSockAddrLen) { if (!bind(m_SocketData.hSocket, lpSockAddr, nSockAddrLen)) return TRUE; else return FALSE; } void CAsyncSocketEx::AttachHandle(SOCKET hSocket) { ASSERT(m_pLocalAsyncSocketExThreadData); VERIFY(m_pLocalAsyncSocketExThreadData->m_pHelperWindow->AddSocket(this, m_SocketData.nSocketIndex)); } void CAsyncSocketEx::DetachHandle(SOCKET hSocket) { ASSERT(m_pLocalAsyncSocketExThreadData); if (!m_pLocalAsyncSocketExThreadData) return; ASSERT(m_pLocalAsyncSocketExThreadData->m_pHelperWindow); if (!m_pLocalAsyncSocketExThreadData->m_pHelperWindow) return; VERIFY(m_pLocalAsyncSocketExThreadData->m_pHelperWindow->RemoveSocket(this, m_SocketData.nSocketIndex)); } void CAsyncSocketEx::Close() { #ifndef NOLAYERS if (m_pFirstLayer) m_pFirstLayer->Close(); #endif //NOLAYERS if (m_SocketData.hSocket != INVALID_SOCKET) { VERIFY(closesocket(m_SocketData.hSocket)!=SOCKET_ERROR); DetachHandle(m_SocketData.hSocket); m_SocketData.hSocket=INVALID_SOCKET; } #ifndef NOLAYERS RemoveAllLayers(); #endif //NOLAYERS delete [] m_pAsyncGetHostByNameBuffer; m_pAsyncGetHostByNameBuffer = NULL; if (m_hAsyncGetHostByNameHandle) WSACancelAsyncRequest(m_hAsyncGetHostByNameHandle); m_hAsyncGetHostByNameHandle = NULL; } BOOL CAsyncSocketEx::InitAsyncSocketExInstance() { //Check if already initialized if (m_pLocalAsyncSocketExThreadData) return TRUE; DWORD id=GetCurrentThreadId(); BOOL bResult = TRUE; m_sGlobalCriticalSection.Lock(); try{ //Get thread specific data if (m_spAsyncSocketExThreadDataList) { t_AsyncSocketExThreadDataList *pList=m_spAsyncSocketExThreadDataList; while (pList) { ASSERT(pList->pThreadData); ASSERT(pList->pThreadData->nInstanceCount>0); if (pList->pThreadData->nThreadId==id) { m_pLocalAsyncSocketExThreadData=pList->pThreadData; m_pLocalAsyncSocketExThreadData->nInstanceCount++; break; } pList=pList->pNext; } //Current thread yet has no sockets if (!pList) { //Initialize data for current thread pList=new t_AsyncSocketExThreadDataList; pList->pNext=m_spAsyncSocketExThreadDataList; m_spAsyncSocketExThreadDataList=pList; m_pLocalAsyncSocketExThreadData=new t_AsyncSocketExThreadData; m_pLocalAsyncSocketExThreadData->nInstanceCount=1; m_pLocalAsyncSocketExThreadData->nThreadId=id; m_pLocalAsyncSocketExThreadData->m_pHelperWindow=new CAsyncSocketExHelperWindow; m_spAsyncSocketExThreadDataList->pThreadData=m_pLocalAsyncSocketExThreadData; } } else { //No thread has instances of CAsyncSocketEx; Initialize data m_spAsyncSocketExThreadDataList=new t_AsyncSocketExThreadDataList; m_spAsyncSocketExThreadDataList->pNext=0; m_pLocalAsyncSocketExThreadData=new t_AsyncSocketExThreadData; m_pLocalAsyncSocketExThreadData->nInstanceCount=1; m_pLocalAsyncSocketExThreadData->nThreadId=id; m_pLocalAsyncSocketExThreadData->m_pHelperWindow=new CAsyncSocketExHelperWindow; m_spAsyncSocketExThreadDataList->pThreadData=m_pLocalAsyncSocketExThreadData; } } catch(...){ TRACE("Unknown exception in CAsyncSocketEx::InitAsyncSocketExInstance()\n"); ASSERT(0); bResult = FALSE; } m_sGlobalCriticalSection.Unlock(); return bResult; } void CAsyncSocketEx::FreeAsyncSocketExInstance() { //Check if already freed if (!m_pLocalAsyncSocketExThreadData) return; DWORD id=m_pLocalAsyncSocketExThreadData->nThreadId; m_sGlobalCriticalSection.Lock(); try{ ASSERT(m_spAsyncSocketExThreadDataList); t_AsyncSocketExThreadDataList *pList=m_spAsyncSocketExThreadDataList; t_AsyncSocketExThreadDataList *pPrev=0; //Serach for data for current thread and decrease instance count while (pList) { ASSERT(pList->pThreadData); ASSERT(pList->pThreadData->nInstanceCount>0); if (pList->pThreadData->nThreadId==id) { ASSERT(m_pLocalAsyncSocketExThreadData==pList->pThreadData); m_pLocalAsyncSocketExThreadData->nInstanceCount--; //Freeing last instance? //If so, destroy helper window if (!m_pLocalAsyncSocketExThreadData->nInstanceCount) { delete m_pLocalAsyncSocketExThreadData->m_pHelperWindow; delete m_pLocalAsyncSocketExThreadData; if (pPrev) pPrev->pNext=pList->pNext; else m_spAsyncSocketExThreadDataList=pList->pNext; delete pList; break; } break; } pPrev=pList; pList=pList->pNext; ASSERT(pList); } } catch(...){ TRACE("Unknown exception in CAsyncSocketEx::FreeAsyncSocketExInstance()\n"); ASSERT(0); } m_sGlobalCriticalSection.Unlock(); } int CAsyncSocketEx::Receive(void* lpBuf, int nBufLen, int nFlags /*=0*/) { #ifndef NOLAYERS if (m_pFirstLayer) return m_pFirstLayer->Receive(lpBuf, nBufLen, nFlags); else #endif //NOLAYERS return recv(m_SocketData.hSocket, (LPSTR)lpBuf, nBufLen, nFlags); } int CAsyncSocketEx::Send(const void* lpBuf, int nBufLen, int nFlags /*=0*/) { #ifndef NOLAYERS if (m_pFirstLayer) return m_pFirstLayer->Send(lpBuf, nBufLen, nFlags); else #endif //NOLAYERS return send(m_SocketData.hSocket, (LPSTR)lpBuf, nBufLen, nFlags); } BOOL CAsyncSocketEx::Connect(LPCTSTR lpszHostAddress, UINT nHostPort) { #ifndef NOLAYERS if (m_pFirstLayer) return m_pFirstLayer->Connect(lpszHostAddress, nHostPort); else #endif //NOLAYERS { USES_CONVERSION; ASSERT(lpszHostAddress != NULL); SOCKADDR_IN sockAddr; memset(&sockAddr,0,sizeof(sockAddr)); LPSTR lpszAscii = T2A((LPTSTR)lpszHostAddress); sockAddr.sin_family = AF_INET; sockAddr.sin_addr.s_addr = inet_addr(lpszAscii); if (sockAddr.sin_addr.s_addr == INADDR_NONE) { m_pAsyncGetHostByNameBuffer=new char[MAXGETHOSTSTRUCT]; m_nAsyncGetHostByNamePort=nHostPort; m_hAsyncGetHostByNameHandle=WSAAsyncGetHostByName(GetHelperWindowHandle(), WM_SOCKETEX_GETHOST, lpszAscii, m_pAsyncGetHostByNameBuffer, MAXGETHOSTSTRUCT); if (!m_hAsyncGetHostByNameHandle) return FALSE; WSASetLastError(WSAEWOULDBLOCK); return TRUE; } sockAddr.sin_port = htons((u_short)nHostPort); return CAsyncSocketEx::Connect((SOCKADDR*)&sockAddr, sizeof(sockAddr)); } } BOOL CAsyncSocketEx::Connect( const SOCKADDR* lpSockAddr, int nSockAddrLen ) { #ifndef NOLAYERS if (m_pFirstLayer) return m_pFirstLayer->Connect(lpSockAddr, nSockAddrLen); else #endif //NOLAYERS return SOCKET_ERROR!=connect(m_SocketData.hSocket, lpSockAddr, nSockAddrLen); } #ifdef _AFX BOOL CAsyncSocketEx::GetPeerName( CString& rPeerAddress, UINT& rPeerPort ) { #ifndef NOLAYERS if (m_pFirstLayer) return m_pFirstLayer->GetPeerName(rPeerAddress, rPeerPort); #endif NOLAYERS SOCKADDR_IN sockAddr; memset(&sockAddr, 0, sizeof(sockAddr)); int nSockAddrLen = sizeof(sockAddr); BOOL bResult = GetPeerName((SOCKADDR*)&sockAddr, &nSockAddrLen); if (bResult) { rPeerPort = ntohs(sockAddr.sin_port); rPeerAddress = inet_ntoa(sockAddr.sin_addr); } return bResult; } #endif //AFX BOOL CAsyncSocketEx::GetPeerName( SOCKADDR* lpSockAddr, int* lpSockAddrLen ) { #ifndef NOLAYERS if (m_pFirstLayer) return m_pFirstLayer->GetPeerName(lpSockAddr, lpSockAddrLen); #endif //NOLAYERS if ( !getpeername(m_SocketData.hSocket, lpSockAddr, lpSockAddrLen) ) return TRUE; else return FALSE; } #ifdef _AFX BOOL CAsyncSocketEx::GetSockName(CString& rSocketAddress, UINT& rSocketPort) { SOCKADDR_IN sockAddr; memset(&sockAddr, 0, sizeof(sockAddr)); int nSockAddrLen = sizeof(sockAddr); BOOL bResult = GetSockName((SOCKADDR*)&sockAddr, &nSockAddrLen); if (bResult) { rSocketPort = ntohs(sockAddr.sin_port); rSocketAddress = inet_ntoa(sockAddr.sin_addr); } return bResult; } #endif BOOL CAsyncSocketEx::GetSockName( SOCKADDR* lpSockAddr, int* lpSockAddrLen ) { if ( !getsockname(m_SocketData.hSocket, lpSockAddr, lpSockAddrLen) ) return TRUE; else return FALSE; } BOOL CAsyncSocketEx::ShutDown( int nHow /*=sends*/ ) { #ifndef NOLAYERS if (m_pFirstLayer) { return m_pFirstLayer->ShutDown(); } else #endif { if ( !shutdown(m_SocketData.hSocket, nHow) ) return TRUE; else return FALSE; } } SOCKET CAsyncSocketEx::Detach( ) { SOCKET socket=m_SocketData.hSocket; DetachHandle(socket); m_SocketData.hSocket=INVALID_SOCKET; return socket; } BOOL CAsyncSocketEx::Attach( SOCKET hSocket, long lEvent /*= FD_READ | FD_WRITE | FD_OOB | FD_ACCEPT | FD_CONNECT | FD_CLOSE*/ ) { if (hSocket==INVALID_SOCKET || !hSocket) return FALSE; VERIFY(InitAsyncSocketExInstance()); m_SocketData.hSocket=hSocket; AttachHandle(hSocket); return AsyncSelect(lEvent); } BOOL CAsyncSocketEx::AsyncSelect( long lEvent /*= FD_READ | FD_WRITE | FD_OOB | FD_ACCEPT | FD_CONNECT | FD_CLOSE*/ ) { ASSERT(m_pLocalAsyncSocketExThreadData); m_lEvent=lEvent; #ifndef NOLAYERS if (!m_pFirstLayer) #endif //NOLAYERS { if ( !WSAAsyncSelect(m_SocketData.hSocket, GetHelperWindowHandle(), m_SocketData.nSocketIndex+WM_SOCKETEX_NOTIFY, lEvent) ) return TRUE; else return FALSE; } return TRUE; } BOOL CAsyncSocketEx::Listen( int nConnectionBacklog /*=5*/ ) { #ifndef NOLAYERS if (m_pFirstLayer) return m_pFirstLayer->Listen(nConnectionBacklog); #endif //NOLAYERS if (!listen(m_SocketData.hSocket, nConnectionBacklog)) return TRUE; else return FALSE; } BOOL CAsyncSocketEx::Accept( CAsyncSocketEx& rConnectedSocket, SOCKADDR* lpSockAddr /*=NULL*/, int* lpSockAddrLen /*=NULL*/ ) { ASSERT(rConnectedSocket.m_SocketData.hSocket == INVALID_SOCKET); #ifndef NOLAYERS if (m_pFirstLayer) { return m_pFirstLayer->Accept(rConnectedSocket, lpSockAddr, lpSockAddrLen); } else #endif //NOLAYERS { SOCKET hTemp = accept(m_SocketData.hSocket, lpSockAddr, lpSockAddrLen); if (hTemp == INVALID_SOCKET) return FALSE; VERIFY(rConnectedSocket.InitAsyncSocketExInstance()); rConnectedSocket.m_SocketData.hSocket=hTemp; rConnectedSocket.AttachHandle(hTemp); } return TRUE; } BOOL CAsyncSocketEx::IOCtl( long lCommand, DWORD* lpArgument ) { return ioctlsocket(m_SocketData.hSocket, lCommand, lpArgument) != SOCKET_ERROR; } int CAsyncSocketEx::GetLastError() { return WSAGetLastError(); } BOOL CAsyncSocketEx::TriggerEvent(long lEvent) { if (m_SocketData.hSocket==INVALID_SOCKET) return FALSE; ASSERT(m_pLocalAsyncSocketExThreadData); ASSERT(m_pLocalAsyncSocketExThreadData->m_pHelperWindow); ASSERT(m_SocketData.nSocketIndex!=-1); #ifndef NOLAYERS if (m_pFirstLayer) { CAsyncSocketExLayer::t_LayerNotifyMsg *pMsg=new CAsyncSocketExLayer::t_LayerNotifyMsg; pMsg->lEvent=lEvent%0xFFFF; pMsg->pLayer=0; BOOL res=PostMessage(GetHelperWindowHandle(), WM_SOCKETEX_TRIGGER, (WPARAM)this, (LPARAM)pMsg); if (!res) delete pMsg; return res; } else #endif //NOLAYERS return PostMessage(GetHelperWindowHandle(), m_SocketData.nSocketIndex+WM_SOCKETEX_NOTIFY, m_SocketData.hSocket, lEvent%0xFFFF); } SOCKET CAsyncSocketEx::GetSocketHandle() { return m_SocketData.hSocket; } HWND CAsyncSocketEx::GetHelperWindowHandle() { if (!m_pLocalAsyncSocketExThreadData) return 0; if (!m_pLocalAsyncSocketExThreadData->m_pHelperWindow) return 0; return m_pLocalAsyncSocketExThreadData->m_pHelperWindow->GetHwnd(); } #ifndef NOLAYERS BOOL CAsyncSocketEx::AddLayer(CAsyncSocketExLayer *pLayer) { ASSERT(pLayer); if (m_SocketData.hSocket!=INVALID_SOCKET) return FALSE; if (m_pFirstLayer) { ASSERT(m_pLastLayer); m_pLastLayer=m_pLastLayer->AddLayer(pLayer, this); return m_pLastLayer?TRUE:FALSE; } else { ASSERT(!m_pLastLayer); pLayer->Init(0, this); m_pFirstLayer=pLayer; m_pLastLayer=m_pFirstLayer; } return TRUE; } void CAsyncSocketEx::RemoveAllLayers() { m_pFirstLayer=0; m_pLastLayer=0; } int CAsyncSocketEx::OnLayerCallback(const CAsyncSocketExLayer *pLayer, int nType, int nParam1, int nParam2) { ASSERT(pLayer); return 1; } #endif //NOLAYERS BOOL CAsyncSocketEx::GetSockOpt(int nOptionName, void* lpOptionValue, int* lpOptionLen, int nLevel /*=SOL_SOCKET*/) { return (SOCKET_ERROR != getsockopt(m_SocketData.hSocket, nLevel, nOptionName, (LPSTR)lpOptionValue, lpOptionLen)); } BOOL CAsyncSocketEx::SetSockOpt(int nOptionName, const void* lpOptionValue, int nOptionLen, int nLevel /*=SOL_SOCKET*/) { return (SOCKET_ERROR != setsockopt(m_SocketData.hSocket, nLevel, nOptionName, (LPSTR)lpOptionValue, nOptionLen)); } #ifdef _DEBUG void CAsyncSocketEx::AssertValid() const { CObject::AssertValid(); (void)m_SocketData; (void)m_lEvent; (void)m_pAsyncGetHostByNameBuffer; (void)m_hAsyncGetHostByNameHandle; (void)m_nAsyncGetHostByNamePort; //Pointer to the data of the local thread // struct t_AsyncSocketExThreadData // { // CAsyncSocketExHelperWindow *m_pHelperWindow; // int nInstanceCount; // DWORD nThreadId; // } *m_pLocalAsyncSocketExThreadData; //List of the data structures for all threads // static struct t_AsyncSocketExThreadDataList // { // t_AsyncSocketExThreadDataList *pNext; // t_AsyncSocketExThreadData *pThreadData; // } *m_spAsyncSocketExThreadDataList; #ifndef NOLAYERS CHECK_PTR(m_pFirstLayer); CHECK_PTR(m_pLastLayer); #endif //NOLAYERS } #endif #ifdef _DEBUG void CAsyncSocketEx::Dump(CDumpContext& dc) const { CObject::Dump(dc); } #endif