MFC网络编程！在调用MySock::OnSend()后，发起AsyncSelect(FD_READ);无法执行到MySock::OnReceive()，如下
void MySock::OnSend(int nErrorCode)
{
AfxMessageBox("OK6");
// TODO: Add your specialized code here and/or call the base class
int m_nL=Send(m_szBuffer,m_nLength,0);
AfxMessageBox("Mysock onsend-1");
m_nLength=0;
//CString strtest=*m_szBuffer;
memset(m_szBuffer,0,sizeof(m_szBuffer));
AsyncSelect(FD_READ);
CAsyncSocket::OnSend(nErrorCode);
}
这个是有被执行的，下一步希望应用程序执行void MySock::OnReceive(int nErrorCode) ，如下所示，但是，现在发现OnReceive根本没有被执行，加入后断点测试得OnReceive未执行。
void MySock::OnReceive(int nErrorCode)
{
// TODO: Add your specialized code here and/or call the base class
AfxMessageBox("OnReceive1");
m_nLength=Receive(m_szBuffer,sizeof(m_szBuffer),0);
CCSocketClientApp* pApp=(CCSocketClientApp*)AfxGetApp();
CCSocketClientDlg* pDlg=(CCSocketClientDlg*)pApp->m_pMainWnd;
pDlg->m_MSGS.InsertString(0,m_szBuffer);
memset(m_szBuffer,0,sizeof(m_szBuffer));
CAsyncSocket::OnReceive(nErrorCode);
}
在服务端的Onsend有执行
void CSrv::OnSend(int nErrorCode)
{
// TODO: Add your specialized code here and/or call the base class
//char str[]="string";
Send(m_szBuffer,m_nLength,0);
//Send(str,7,0);
//CAsyncSocket::OnSend(nErrorCode);
}
意味着服务端有回发消息，但是，客户端的OnReceive（）没有被触发
[解决办法]
从你的代码看，服务器端应该在OnReceive中发送数据才对。这有socket的源码，你参考一下：
http://download.csdn.net/detail/geoff08zhang/4571358