用CAsyncSocket做服务器端应该如何接收数据？

[shjqk]

void CMYSocket::OnAccept(int nErrorCode)
{
int len = 0;
char m_szBuffer[1024];
memset(m_szBuffer,0,sizeof(m_szBuffer));

CAsyncSocket rConnectedSocket;
if (Accept (rConnectedSocket) )
{
len =rConnectedSocket.Receive(m_szBuffer , sizeof(m_szBuffer) , 600000);

}
CAsyncSocket::OnAccept(nErrorCode);
}

我从CAsyncSocket继承了CMYSocket做SERVER端.
想在OnAccept接收数据，但在接收时len都返回 -1
请问是什么原因，用CAsyncSocket做服务器端应该如何接收数据？
谢谢

[luojohn]

接收数据不能在OnAccept中来实现，要重载OnReceive函数，在这个函数中用Reveive函数来接收数据！

[flinming]

不是这样做的。。。

服务器接受连接，只是在产生一个新的socket，连接的是这个新的socket，发送数据也是这个新的。。。跟监听socket没有其他关系了

[vcforever]

OnAccept是用来接受客户端的连接请求
OnReceive才是接受数据！
void CMyAsyncSocket::OnReceive(int nErrorCode) // CMyAsyncSocket is
// derived from CAsyncSocket
{
static int i=0;

i++;

TCHAR buff[4096];
int nRead;
nRead = Receive(buff, 4096);

switch (nRead)
{
case 0:
Close();
break;
case SOCKET_ERROR:
if (GetLastError() != WSAEWOULDBLOCK)
{
AfxMessageBox ("Error occurred");
Close();
}
break;
default:
buff[nRead] = 0; //terminate the string
CString szTemp(buff);
m_strRecv += szTemp; // m_strRecv is a CString declared
// in CMyAsyncSocket
if (szTemp.CompareNoCase("bye") == 0 ) ShutDown();
}
CAsyncSocket::OnReceive(nErrorCode);
}

[shjqk]

谢谢指教
我用pSocket （ CNewSocket也是从CAsyncSocket继承的）来接收
在CNewSocket重载OnReceive，但返回还是 -1
请问有什么错误吗？
void CMYSocket::OnAccept(int nErrorCode)
{
// TODO: Add your specialized code here and/or call the base class
CNewSocket* pSocket = new CNewSocket();
int len = 0;
MESSAGE_Head head;
char m_szBuffer[1024];
memset(m_szBuffer,0,sizeof(m_szBuffer));
if (Accept (*pSocket) )
{
pSocket->AsyncSelect(FD_READ);
m_pSocket=pSocket;
}
else
{
delete pSocket;
}

CAsyncSocket::OnAccept(nErrorCode);
}

void CNewSocket::OnReceive(int nErrorCode)
{
// TODO: Add your specialized code here and/or call the base class
int len = 0;
MESSAGE_Head head;
CString strMsg;
char m_szBuffer[1024];
memset(m_szBuffer,0,sizeof(m_szBuffer));
len = Receive(m_szBuffer , sizeof(m_szBuffer) , 600000 );

CAsyncSocket::OnReceive(nErrorCode);
}

[shjqk]

用GetLastError 返回:10045 WSAEOPNOTSUPP

[vcforever]

WSAEOPNOTSUPP

MSG_OOB was specified, but the socket is not stream-style such as type SOCK_STREAM, OOB data is not supported in the communication domain associated with this socket, or the socket is unidirectional and supports only send operations.

[vcforever]

you should write your OnReceive function like this

char* pBuf = new char[1025];
int iBufSize = 1024;
int iRcvd;
CString strRecvd;
iRcvd = m_sConnectSocket.Receive(pBuf,iBufSize);
if(iRcvd == SOCKET_ERROR){
//deal with error message
}
else{
pBuf[iRcvd] = NULL;
strRecvd = pBuf;
m_ctlRecvd.AddString(strRecvd);
UpdateData(FALSE);
}

[shjqk]

m_sConnectSocket 哪定义的啊

[vcforever]

如果你的程序是SDI或MDI的，在MainFrame的头文件中

如果是对话框的就在对话框的头文件中！

[101monster]

呵呵，UP！