学步园

#include "CInitSocket.h"
#include <iostream>
using namespace std;

CInitSock initsocket;
int main()
{
//时间句柄和套接字句柄数组
WSAEVENT eventArrary[WSA_MAXIMUM_WAIT_EVENTS];
SOCKET sockArray[WSA_MAXIMUM_WAIT_EVENTS];

int nEventTotal=0;                 //事件总数
USHORT nPort=4567;
SOCKET ListenSocket=socket(AF_INET,SOCK_STREAM,0);
sockaddr_in addrin;
addrin.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
addrin.sin_family=AF_INET;
addrin.sin_port=htons(nPort);
if (SOCKET_ERROR==bind(ListenSocket,(LPSOCKADDR)&addrin,sizeof(addrin)))
{
   cout<<"套接字绑定失败！\n";
return -1;
}
listen(ListenSocket,5);

//创建事件对象，并与新的套接字关联
WSAEVENT hEvent=WSACreateEvent();
WSAEventSelect(ListenSocket,hEvent,FD_ACCEPT | FD_CLOSE);
//添加到数组中
    eventArrary[nEventTotal]=hEvent;
sockArray[nEventTotal]=ListenSocket;
nEventTotal++;
//处理网络事件
while(true)
{
//在所有事件对象上等待,由于第三个茶参数是FALSE，所以返回值指向第一个有事件发生的套接字
   int nIndex=WSAWaitForMultipleEvents(nEventTotal,eventArrary,FALSE,WSA_INFINITE,FALSE);
// 对每个事件调用WSAWaitForMultipleEvents，确定其状态
   nIndex=nIndex-WSA_WAIT_EVENT_0;
for (int i=nIndex;i<nEventTotal;i++)
   {
    nIndex=WSAWaitForMultipleEvents(1,&eventArrary[i],TRUE,1000,FALSE);
if (nIndex==WSA_WAIT_FAILED || nIndex==WSA_WAIT_TIMEOUT)
    {
continue;
    }
else
    {
//获取到来的通知消息，WSAEnumNetworkEvents会自动重置受信事件
     WSANETWORKEVENTS event;
     WSAEnumNetworkEvents(sockArray[i],eventArrary[i],&event);
if (event.lNetworkEvents & FD_ACCEPT)
     {
if (event.iErrorCode[FD_ACCEPT_BIT]==0)
      {
if (nEventTotal>WSA_MAXIMUM_WAIT_EVENTS)
       {
        cout<<"Too much connections!\n";
continue;
       }
       SOCKET NewSocket=accept(sockArray[i],NULL,NULL);
       WSAEVENT NewEvent=WSACreateEvent();
       WSAEventSelect(NewSocket,NewEvent,FD_READ | FD_WRITE | FD_CLOSE);
       eventArrary[nEventTotal]=NewEvent;
       sockArray[nEventTotal]=NewSocket;
       nEventTotal++;
      }
     }
else if (event.lNetworkEvents & FD_READ)
     {
if (event.iErrorCode[FD_READ_BIT]==0)
      {
char szText[256];
int nRecv=recv(sockArray[i],szText,256,0);
if (nRecv>0)
       {
        szText[nRecv]='\0';
        cout<<"接收到数据"<<szText<<endl;
       }
      }
     }
else if (event.lNetworkEvents & FD_WRITE)
     {
if (event.iErrorCode[FD_WRITE_BIT]==0)
      {
//do something
      }
     }
else if (event.lNetworkEvents & FD_CLOSE)
     {
if (event.iErrorCode[FD_CLOSE_BIT]==0)
      {
       closesocket(sockArray[i]);
for (int j=i;j<nEventTotal;j++)
       {   //从数组中删除
        sockArray[j]=sockArray[j+1];
        eventArrary[j]=eventArrary[j+1];
       }
      }
     }
    }
   }

}
return 0;
}