关于socket的receive

[sjjwind]

我在一个线程里加了while(-1 == revc(...))可是会卡内存，如果不加while这个语句没有接受buf就跳过了，显示的buf是乱码，要怎么解决。

[leegoex]

你创建的socket有问题吧，要不然怎么会返回-1.

If no error occurs, recv returns the number of bytes received. If the connection has been gracefully closed, the return value is zero. Otherwise, a value of SOCKET_ERROR is returned, and a specific error code can be retrieved by calling WSAGetLastError.

[sjjwind]

[Quote=引用 1 楼 leegoex 的回复:]
你创建的socket有问题吧，要不然怎么会返回-1.

If no error occurs, recv returns the number of bytes received. If the connection has been gracefully closed, the return value is zero. Otherwise, a value of SOCKET_ERROR ……
[/Quote]
CMySocket m_ReceiveMessage;
while(true)
{
TCHAR* pBuffer = new TCHAR[1024];
m_ReceiveMessage.Receive(pBuffer,sizeof(pBuffer));
::SendMessage((HWND)pParam,WM_RECEIVE_MESSAGE,(WPARAM)pBuffer,0);
}
我这样写有问题么？

[leegoex]

m_ReceiveMessage有创建吗？

[sjjwind]

是从CSocket继承而来的一个类

[leegoex]

m_ReceiveMessage要调用Create函数，指明用UDP还是TCP，要指定端口。
看看这个吧

http://msdn.microsoft.com/en-us/library/t7a47kk4.aspx

[sjjwind]

查了下msdn 的确是要CReate的，我给忘了，谢谢。