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C++的多媒体屏幕广播教学系统设计第11页

更新时间：2012-2-23: 来源：毕业论文

//服务器完成端口接收的包的操作类型
RECV_POSTED,
SEND_POSTED,
NEW_POSTED
} OP_TYPE;

typedef struct
{
//完成端口数据包结构
OVERLAPPED ol;
WSABUF data;
char buf[DATA_SIZE];
sockaddr_in addr;
OP_TYPE opType;
} PER_IO_DATA,*LPPER_IO_DATA;
(2)在服务器主窗口类CMY_UdpIocpSrvDlg中创建套接字及完成端口并进行绑定
//创建一个套接字并判断是否成功
int ret;
udpSocket = socket(AF_INET,SOCK_DGRAM,0);
if (udpSocket == SOCKET_ERROR)
{
  TRACE("err code=%d\n",GetLastError());
  return;
}
DWORD dwBytesReturned = 0;
BOOL bNewBehavior = FALSE;
WSAIoctl(udpSocket, SIO_UDP_CONNRESET,
  &bNewBehavior, sizeof(bNewBehavior),
  NULL, 0, &dwBytesReturned,
                   NULL, NULL);
//设置服务器地址
sockaddr_in servaddr;
memset(&servaddr,0,sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
servaddr.sin_port = htons(m_port);
//设置服务器端口可重复利用
int opt = 1;本文来自优.文~论^文·网原文请找腾讯3249.114
ret=setsockopt(udpSocket,SOL_SOCKET,SO_REUSEADDR,(constchar*)&opt,sizeof(opt));
if (SOCKET_ERROR == ret)
{
  TRACE("err code=%d\n",GetLastError());
  return;
}论文网http://www.youerw.com/
//绑定套接字
ret = bind(udpSocket,(sockaddr*)&servaddr,sizeof(servaddr));
if (SOCKET_ERROR == ret)
{
  TRACE("err code=%d\n",GetLastError());
  return;
}
//创建完成端口
hIocp = CreateIoCompletionPort(INVALID_HANDLE_VALUE,NULL,NULL,0);
if (hIocp == NULL)
{
  TRACE("err code=%d\n",GetLastError());
  return;
}
//将套接字与完成端口绑定
if (hIocp != CreateIoCompletionPort((HANDLE)udpSocket,hIocp,0,0))
{
  TRACE("err code=%d\n",GetLastError());