VC 在DLL中用SOCKET，设置了RECV时限，却无效

wxliangzyt 2013-12-12 05:26:09

VC 在DLL中用SOCKET，设置了RECV时限，却无效，请高手指点一下
1：Connect_Server为连接函数



SOCKET CsfgsetdataApp::Connect_Server(char* &return_char,char* conip)

{

	CString css;

	SOCKET s=INVALID_SOCKET;

	WORD wVersionRequested;

	WSADATA wsa;

	BOOL bDontLinger = FALSE; 

	int iBufLen = 0;

	DWORD dwNo = 0;

	wVersionRequested = MAKEWORD( 2, 2 );

	int res = WSAStartup(wVersionRequested,&wsa);

	if(res == -1)

	{

		css="0:1001";

		return_char=css.GetBuffer(css.GetLength());

		return s;

	}



	struct sockaddr_in socket_in;

	s =  WSASocket(AF_INET,SOCK_STREAM,0,NULL,0,0);

	if(s == INVALID_SOCKET)

	{

		css="0:1002";

		return_char=css.GetBuffer(css.GetLength());

		return s;

	}



	int iOptVal = 1;

	struct linger linger = { 0 };

	linger.l_onoff = 1;

	linger.l_linger = 30;

    if( setsockopt(s,SOL_SOCKET, SO_REUSEADDR,(char*)&linger, sizeof(linger)) == -1 )

    { 

		closesocket(s);

		WSACleanup();

		return s;

	}

	

	////////////////////////////////////////////////

	socket_in.sin_family = AF_INET;

	socket_in.sin_port = htons(5000);

	socket_in.sin_addr.S_un.S_addr = inet_addr(conip);//

	

	int con_res = connect(s,(struct sockaddr*)&socket_in,sizeof(socket_in));

	if(con_res == SOCKET_ERROR)

	{

		//失败

		css.Format("0:1003:%s",conip);

		return_char=css.GetBuffer(css.GetLength());

		closesocket(s);

		WSACleanup();

		return s;

	}

	else

	{

		///设置接收时限

		int nNetTimeout=10000;

		setsockopt(s,SOL_SOCKET, SO_RCVTIMEO,(char *)&nNetTimeout,sizeof(int));             

		//关闭套接字上的发送缓冲，这样可以提高性能

		setsockopt(s,SOL_SOCKET,SO_SNDBUF,(const char*)&iBufLen,sizeof(int));

		setsockopt(s,SOL_SOCKET,SO_RCVBUF,(const char*)&iBufLen,sizeof(int));           

		//强制发送延时算法关闭,直接发送到网络上去

		setsockopt(s,IPPROTO_TCP,TCP_NODELAY,(char*)&dwNo,sizeof(DWORD));

		//如果要已经处于连接状态的soket在调用closesocket后强制关闭，不经历

		setsockopt(s,SOL_SOCKET,SO_DONTLINGER,(const char*)&bDontLinger,sizeof(BOOL));

		//closesocket（一般不会立即关闭而经历TIME_WAIT的过程）后想继续重用该socket：

		bDontLinger=TRUE;

		setsockopt(s,SOL_SOCKET ,SO_REUSEADDR,(char*)&bDontLinger,sizeof(BOOL));

		linger.l_onoff = 1;

		linger.l_linger = 0;

		setsockopt(s,SOL_SOCKET,SO_LINGER,(const char*)&linger,sizeof(linger));	

		return_char="0000";

		return s;

	}

}

2：



extern "C"  __declspec(dllexport)  char* WINAPI __stdcall  

sfaddgys(char* youno,char* lseverid)

{

	SOCKET sct;

	int li_sendcut;

	char* retrun_cr;

	CString retruncst;

        char sendbuff[1024]={0};

	char recbuff[2048]={'\0'};

	sct=wapp->Connect_Server(retrun_cr,icserips);

	if (!strcmp(retrun_cr,"0000"))

	{

		li_sendcut=::send(sct,sendbuff, sizeof(sendbuff),0);

		if(li_sendcut>0)

		{

			int nRecv = ::recv(sct, recbuff, sizeof(recbuff), 0);

			if (nRecv<=0)

			{

.........................................................

我用：
int nNetTimeout=10000;
setsockopt(s,SOL_SOCKET, SO_RCVTIMEO,(char *)&nNetTimeout,sizeof(int));
设置了接收时限，为什么会无效了，我应该怎么做，才能解决这个问题

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testbaowan2000 2014-04-29

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if( setsockopt(s,SOL_SOCKET, SO_REUSEADDR,(char*)&linger, sizeof(linger)) == -1 ) 改为if( setsockopt(s,SOL_SOCKET, SO_LINGER,(char*)&linger, sizeof(linger)) == -1 )

wxliangzyt 2013-12-15