请教请教！！CAsyncSocket类问题！

[步-月]

我在使用Receive接收数据时为什么返回总是0字节？请指教。

[Viconia]

什么啊，能不能说详细点

帮UP

[ifromheaven]

重载OnReceive(int nErrorCode)
void CMySocket::OnReceive(int nErrorCode)
{
if(nErrorCode==0)
{

int nBuffSize=999;
int nRcvd;
char *Buffer=new char[1000];
CString Recvd;
nRcvd=this->Receive(Buffer,nBuffSize);
}

CAsyncSocket::OnReceive(nErrorCode);
}

[tanyx]

帮你up

[步-月]

ifromheaven(天堂鸟)
我也是象说得那样做的，nErrorCode==0，但Receive()结果就是没有数据。
void CRequestSocket::OnReceive(int nErrorCode)
{
mObject,NULL,1,NULL,NULL,INTERNET_FLAG_NO_AUTO_REDIRECT);
if(nErrorCode ==0)
{
int nBytes = Receive( m_ReceiveBuf.GetData(), (int)m_ReceiveBuf.GetSize() );

switch(nBytes)
{
case 0:
Close();
break;
case SOCKET_ERROR :
if (GetLastError() != WSAEWOULDBLOCK)
{
nBytes = GetLastError();
AfxMessageBox ("Error occurred");
Close();
}
break;
default:
m_strReceiveRequest = "";
GetString(m_strReceiveRequest,m_ReceiveBuf,nBytes);
}
}

CAsyncSocket::OnReceive(nErrorCode);
}

[步-月]

问题解决了，我用的Receive缓存m_ReceiveBuf是CByteArray类，在使用前在构造函数中调用m_ReceiveBuf.SetSize(1024);后调试通过。
但仍感谢你们的up