贴出下自己的代码：
typedef struct MYOVERLAPPED:public OVERLAPPED{
WSABUF wsaBuf;
u_short id;
UINT IoMode;
MYOVERLAPPED()
{
Internal=0;
InternalHigh=0;
Offset=0;
OffsetHigh=0;
hEvent=0;
IoMode=0;
id=(WORD)-1;
wsaBuf.buf=NULL;
wsaBuf.len=0;
}
}MYOVERLAPPED,LPMYOVERLAPPED;
下面这两个数组是CSOCKET的成员变量，CSOCKET是我自己定义的一个类
SOCKET m_client[MAX_USER];
MYOVERLAPPED m_myOverlapped[MAX_USER];
下面的PostRecv函数是用来调用WSARecv来接收客户端的请求
BOOL CSOCKET::PostRecv(u_short IDclient, UINT recvMode)
{
SOCKET socket=m_client[IDclient];
DWORD RecvBytes=0;
DWORD Flags=0;
MYOVERLAPPED *lpMyoverlapped=GetEmptyMyOverlapped(IDclient);
lpMyoverlapped->id=IDclient;
lpMyoverlapped->IoMode=recvMode;
if(WSARecv(socket,&lpMyoverlapped->wsaBuf,1,&RecvBytes,&Flags,lpMyoverlapped,NULL)==SOCKET_ERROR)
{
int Error=WSAGetLastError();
if (Error != WSA_IO_PENDING)
{
cout<<"WSARecv is fail:"<<WSAGetLastError()<<endl;
deleteclient(IDclient);
return FALSE;
}
}
return TRUE;
}
下面的threadiocp是线程的回调函数
DWORD WINAPI CSOCKET::threadiocp(LPVOID lparam)
{
CSOCKET *lpsocket=(CSOCKET *)lparam;
DWORD BytesTransferred=0;
MYOVERLAPPED *lpoverlapped=NULL;
SOCKET socket=NULL;
while (1)
{
if ( GetQueuedCompletionStatus(lpsocket->m_iocp, &BytesTransferred,
(LPDWORD)&socket, (LPOVERLAPPED*)&lpoverlapped, INFINITE) == 0 )
{
DWORD dwLastError = GetLastError();
if ( dwLastError != 64 )
{
cout<<"GetQueuedCompletionStatus fail:"<<GetLastError()<<endl;
}
}
if (BytesTransferred==0)
{
cout<<"客户：%d 退出!"<<lpoverlapped->id<<endl;
lpsocket->deleteclient(lpoverlapped->id);
continue;
}
当我在客户端发送数据给服务端时，服务器调用threadiocp接收数据，但是这个时候BytesTransferred的值却为0，lpoverlapped->wsabuff.buf中没有数据，但是明明我在客户端那边有发数据了啊，为什么就接收不到呢 求帮忙 在这里谢谢谢谢了
没人吗 求助啊 这个问题困恼了我一天了
终于有人了 好高兴啊 WSARecv返回的是WSA_IO_PENDING值 没有问题
