MFC网络程序设计.ppt

6.添加加入客户函数 ： void CMyChatSrvrDlg::AddClient() { CClientSocket* pSocket = new CClientSocket; pSocket-m_pDlg = this; if(!m_ListenSock.Accept(*pSocket)) { AfxMessageBox(接收信息出错!); delete pSocket; return; } pSocket-AsyncSelect(FD_READ|FD_CLOSE); m_ClientList.AddTail(pSocket); SetDlgItemInt(IDC_COUNT, m_ClientList.GetCount(), FALSE); } 7.添加删除客户函数 ： void CMyChatSrvrDlg::RemoveClient(CClientSocket* pSocket) { POSITION nPos = m_ClientList.GetHeadPosition(); POSITION nTmpPos = nPos; while(nPos) { CClientSocket* pSockItem = (CClientSocket*) m_ClientList.GetNext(nPos); if(pSockItem-m_hSocket == pSocket-m_hSocket) { pSockItem-Close(); delete pSockItem; m_ClientList.RemoveAt(nTmpPos); SetDlgItemInt(IDC_COUNT, m_ClientList.GetCount(), FALSE); return; } nTmpPos = nPos; } } 8.添加数据接收函数 void CMyChatSrvrDlg::RecvData(CClientSocket* pSocket) { int nLen; char chBuf[4096], chOutBuf[4096]; POSITION nPos; if (pSocket-Receive(chBuf, sizeof(chBuf))!=SOCKET_ERROR) { CString IPAddress; unsigned int port; pSocket-GetPeerName(IPAddress, port); wsprintf(chOutBuf, [客户端(IP地址: %s; 端口号: %u; Socket句柄: %4d)]: \r\n%s\r\n, IPAddress, port, pSocket-m_hSocket, chBuf); nLen = m_cntlInfo.GetWindowTextLength(); m_cntlInfo.SetSel(nLen, nLen); m_cntlInfo.ReplaceSel(chOutBuf); m_cntlInfo.LineScroll(1); nPos = m_ClientList.GetHeadPosition(); while (nPos) { CClientSocket* pSockItem = (CClientSocket*) m_ClientList.GetNext(nPos); nLen = lstrlen(chOutBuf); pSockItem-Send(chOutBuf, nLen+1); } } } 9. 添加套接字通知消息处理函数 void CListenSocket::OnAccept(int nErrorCode) { m_pDlg-AddClient(); CAsyncSocket::OnAccept(nErrorCode); } void CClientSocket::OnClose(int nErrorCode) { m_pDlg-RemoveClient(this); CAsyncSocket::OnClose(nErrorCode); } void CClientSocket::OnReceive(int nErrorCode) { m_pDlg-RecvDat