WINSOCK2 WSAAsyncSelect被否决的问题
WINSOCK2 WSAAsyncSelect被否决的问题
提问于 2016-06-04 05:48:57
嗨，我正在使用winsock2，我正在尝试实现异步通信。我尝试了TCP服务器msdn，它正在等待接受。
我在听函数之前尝试过使用WSAAsyncSelect。
WSAAsyncSelect(ListenSocket,
m_hWnd,
WM_SOCKET,
(FD_CLOSE | FD_ACCEPT | FD_READ));并显示以下错误。
Error C4996 'WSAAsyncSelect': Use WSAEventSelect() instead or define _WINSOCK_DEPRECATED_NO_WARNINGS to disable deprecated API warnings 我该怎么解决这个..。提前谢谢..。
回答 1
Stack Overflow用户
回答已采纳
发布于 2016-06-04 06:05:14
要消除该警告，您可以在源文件的顶部定义#define _WINSOCK_DEPRECATED_NO_WARNINGS，这将禁用警告的类型。
尽管如此，听这个警告并使用WSAEventSelect可能是值得的。因为WSAEventSelect向事件发出信号，而不是将消息发送到窗口的消息队列，这正是WSAAsyncSelect所做的。投递到消息队列的速度更慢，并增加了不真正需要的额外处理。
我有一个例子，我将在这里为你张贴：
..。我可能是过火了..。但这一切都是有用的和相关的。
安装监听套接字
if ( socket_name == INVALID_SOCKET )
{
P_ERR( "Could not create socket ( Id: %d ): %d\n", id, WSAGetLastError() );
return INVALID_SOCKET;
}
rerror = bind( socket_name, (SOCKADDR*)&sock_addr, sizeof( sock_addr ) );
if ( rerror != SOCKET_ERROR )
{
rerror = listen( socket_name, MAX_LISTEN_QUEUE );
if ( rerror != SOCKET_ERROR )
{
/* Selects the events that will trigger the `socket_event` windows event. */
/* socket_event was created using 'CreateEvent( NULL, TRUE, FALSE, NULL );' */
WSAEventSelect( socket_name, socket_event, FD_ALL_EVENTS );
if ( !startStatusThread() )
{
rerror = 1;
P_ERR( "Status thread failed: %d\n", id );
}
}
else
{
P_ERR( "listen() error %d : Error %d\n", id, WSAGetLastError() );
closesocket( socket_name );
}
}
else
{
P_ERR( "bind() error ( Id: %d ): %d\n", id, WSAGetLastError() );
closesocket( socket_name );
}从套接字处理事件
/* waits 10ms for events in the event array ( in this case just 1 event as socket_event ). */
rerror = WSAWaitForMultipleEvents( 1, &socket_event, FALSE, 10, FALSE );
if ( rerror == WSA_WAIT_TIMEOUT )
{
continue; /* this block of code runs in a while loop. */
}
index = rerror - WSA_WAIT_EVENT_0; /* get the smallest index of a triggered event */
if ( rerror != WSA_WAIT_TIMEOUT && rerror != WSA_WAIT_FAILED )
{
/* returns a list of the events that occured. */
rerror = WSAEnumNetworkEvents( socket_name, socket_event, &events );
if ( rerror == SOCKET_ERROR )
{
P_ERR( "WSAEnumNetworkEvents Error %d: Id: %d\n", WSAGetLastError(), pThis->id );
continue;
}
/* look below for this function. */
handleNetworkEvents( events, index );
}处理事件。
void
handleNetworkEvents( WSANETWORKEVENTS e, const int socket_index )
{
int rerror = 0;
/* on accept. */
if ( e.lNetworkEvents & FD_ACCEPT )
{
if ( e.iErrorCode[FD_ACCEPT_BIT] == 0 )
{
onAccept();
}
else
{
P_ERR( "Unknown network event error %d\n", id );
}
}
/* on connect */
if ( e.lNetworkEvents & FD_CONNECT )
{
if ( e.iErrorCode[FD_CONNECT_BIT] == 0 )
{
sendRead(); /* send first read request */
}
else
{
P_ERR( "Unknown network event error %d\n", id );
}
}
/* on successful read */
if ( e.lNetworkEvents & FD_READ )
{
sendRead(); /* get read data and queue another request. */
callback( id, inBuffer.buf, lastReadSize ); /* process data. */
}
/* on close. */
if ( e.lNetworkEvents & FD_CLOSE )
{
/* close the current event and make a new one ready for a new connection. */
onClose( socket_index );
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/37626833
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