WSAEventSelect模型下何时触发FD_CLOSE

[cll131421]

最近在学习网络编程中的WSAEventSelect模型，其他都还好，就是无法触发FD_CLOSE事件，导致服务器端的连接无法关闭。
请教各位高手指教。
直接上代码：

#include <iostream>
#include "InitSocket.h"

#pragma comment (lib,"ws2_32.lib")

//初始化网络环境
CInitSocket gcInitSocket;

void main()
{
	 SOCKET sServer = socket(AF_INET,SOCK_STREAM,0);
	 if (INVALID_SOCKET == sServer)
	 {
		 printf("创建服务器套接字失败，错误编号：%d\n",WSAGetLastError());
		 exit(0);
	 }
	 sockaddr_in addrBind;
	 addrBind.sin_family = AF_INET;
	 addrBind.sin_addr.S_un.S_addr = htonl(ADDR_ANY);
	 addrBind.sin_port = htons(8080);
	 int iBind = bind(sServer,(sockaddr*)&addrBind,sizeof(sockaddr));
	 if (SOCKET_ERROR == iBind)
	 {
		 printf("bind failed\n");
		 exit(0);
	 }
	 int iListen = listen(sServer,SOMAXCONN);
	 if (SOCKET_ERROR == iListen)
	 {
		 printf("listen failed\n");
		 exit(0);
	 }
	 WSAEVENT eventArr[WSA_MAXIMUM_WAIT_EVENTS];
	 SOCKET socketArr[WSA_MAXIMUM_WAIT_EVENTS];
	 int iArrSize = 0;
	 WSAEVENT eventForSRV = WSACreateEvent();
	 eventArr[iArrSize] = eventForSRV;
	 socketArr[iArrSize] = sServer;
	 ++iArrSize;
	 if (WSA_INVALID_EVENT == eventForSRV)
	 {
		 printf("create wsaevent failed\n");
		 exit(0);
	 }
	 WSAEventSelect(sServer,eventForSRV,FD_ACCEPT | FD_CLOSE);
	 while (1)
	 {
		 int iIndex = WSAWaitForMultipleEvents(iArrSize,eventArr,false,INFINITE,false);
		 if (WSA_WAIT_FAILED == iIndex || WSA_WAIT_TIMEOUT == iIndex)
		 {
			 continue;
		 }
		 iIndex -= WSA_WAIT_EVENT_0;
		 for (int i = iIndex;i!=iArrSize;++i)
		 {
			 iIndex = WSAWaitForMultipleEvents(1,&eventArr[i],true,1000,false);
			 if (WSA_WAIT_FAILED == iIndex || WSA_WAIT_TIMEOUT == iIndex)
			 {
				 continue;
			 }
			 else
			 {
				 WSANETWORKEVENTS eventTmp;
				 WSAEnumNetworkEvents(socketArr[i],eventArr[i],&eventTmp);
				 if (eventTmp.lNetworkEvents & FD_ACCEPT)
				 {
					 if (eventTmp.iErrorCode[FD_ACCEPT_BIT] != 0)
					 {
						 continue;
					 }
					 sockaddr_in addrAccept;
					 int iLength = sizeof(sockaddr);
					 SOCKET sAccept = accept(socketArr[i],(sockaddr*)&addrAccept,&iLength);
					 WSAEVENT eventAccept = WSACreateEvent();
					 printf("IP：%s，端口：%d\n",inet_ntoa(addrAccept.sin_addr),ntohs(addrAccept.sin_port)); 
					 WSAEventSelect(sAccept,eventAccept,FD_READ || FD_WRITE || FD_CLOSE);
					 socketArr[iArrSize] = sAccept;
					 eventArr[iArrSize] = eventAccept;
					 ++iArrSize;
				 }
				 else if (eventTmp.lNetworkEvents & FD_READ)
				 {
					 if (0 != eventTmp.iErrorCode[FD_READ_BIT])
					 {
						 continue;
					 }
					 char chRecv[200] = {0};
					 int iRecv = recv(socketArr[i],chRecv,200,0);
					 if (SOCKET_ERROR == iRecv)
					 {
						 printf("recv failed\n");
						 continue;
					 }
					 printf("%s\n",chRecv);
				 }
				 else if (eventTmp.lNetworkEvents & FD_CLOSE)
				 {
// 					 if (0 != eventTmp.iErrorCode[FD_CLOSE_BIT])
// 					 {
// 						 continue;
// 					 }
					 closesocket(socketArr[i]);
					 for (int i2 = i;i2!=iArrSize - 1;++i2)
					 {
						 socketArr[i] = socketArr[i + 1];
						 eventArr[i] = eventArr[i + 1];
					 }
					 --iArrSize;
					 printf("one client closed\n");
				 }
			 }
		 }
	 }
}

[勤奋的小游侠]

In TCP terms, this means that the FD_CLOSE is recorded when the connection goes into the TIME WAIT or CLOSE WAIT states. This results from the remote end performing a shutdown on the send side or a closesocket. 连接超时 或者发送方调用了shutdown 或者closesocket

[cll131421]

引用 1 楼 lovesmiles 的回复:

In TCP terms, this means that the FD_CLOSE is recorded when the connection goes into the TIME WAIT or CLOSE WAIT states. This results from the remote end performing a shutdown on the send side or a closesocket. 连接超时 或者发送方调用了shutdown 或者closesocket

客户端关闭会引发该么？

[cll131421]

引用 1 楼 lovesmiles 的回复:

In TCP terms, this means that the FD_CLOSE is recorded when the connection goes into the TIME WAIT or CLOSE WAIT states. This results from the remote end performing a shutdown on the send side or a closesocket. 连接超时 或者发送方调用了shutdown 或者closesocket

我测试的时候客户端关闭无法触发该信号，导致服务器端的连接数量不停增大。怎么破？