静态MFC CSocket CAsyncSocket map_pp.cpp错误

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静态MFC，在线程中使用SOCKET，发生错误：

Debug Assertion Failed!
Program:...
File:f:\rtm\vctools\vc7libs\ship\atlmfc\src\mfc\map_pp.cpp
Line:179

这是MFC的一个BUG，在6.0中就发现，可惜微软到VS2013还是没有修改，估计这个东西微软也要淘汰了，懒得改了，下面是MSDN的解决方法：

When using MFC sockets in secondary threads in a statically linked MFC 
Visual C++ 6.0 application, an unhandled exception occurs. The reason for 
the unhandled exception is that an object of type CMapPtrToPtr pointer, 
pointed to by m_pmapSocketHandle, is never created. 
To resolve it the handle maps used by the sockets need to be created for 
each thread.The following code shows a function to do this: 
void SocketThreadInit() 
{ 
#ifndef _AFXDLL 
#define _AFX_SOCK_THREAD_STATE AFX_MODULE_THREAD_STATE 
#define _afxSockThreadState AfxGetModuleThreadState() 

_AFX_SOCK_THREAD_STATE* pState = _afxSockThreadState; 
if (pState->m_pmapSocketHandle == NULL) 
pState->m_pmapSocketHandle = new CMapPtrToPtr; 
if (pState->m_pmapDeadSockets == NULL) 
pState->m_pmapDeadSockets = new CMapPtrToPtr; 
if (pState->m_plistSocketNotifications == NULL) 
pState->m_plistSocketNotifications = new CPtrList; 

#endif 
} 
This function should be called once in each secondary thread before the 
first socket is created in the new thread. 

IMP : This bug was corrected in Visual Studio 6.0 Service Pack 3 

最后这句就是屁话了，我在2013中试了，还是错误，可恶！

静态MFC CSocket CAsyncSocket map_pp.cpp错误

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原文地址：http://www.cnblogs.com/shaoxuejun/p/4329501.html