Question

我目前在分布式多进程应用程序中搜索一些性能问题！

这就是我想尝试快速环回套接字的原因 SIO_LOOPBACK_FAST_PATH descreption和msdn desc.

这是我打开服务器套接字的代码片段：

TcpipSocket::TcpipSocket(FullIPAddress const& address)
: m_Port(address.m_Port)
, m_IPAddress(address.m_Address)
, m_Socket(INVALID_SOCKET)
{
if (0 == ms_NumberOfInstances)
{
    initNetwork(NULL);  // here i call the WSAStartup function
}

m_Socket = ::socket(TCPSocketFamily, TCPSocketType, TCPProtocol);
if (INVALID_SOCKET == m_Socket)
{
    throwException(ConstrName);
}
else
{
    // this is the code to enable the FAST Loopback Sockets see [1]
    int OptionValue =1;
    DWORD NumberOfBytesReturned =0;
    int status=::WSAIoctl(m_Socket,
        SIO_LOOPBACK_FAST_PATH,
        &OptionValue,
        sizeof(OptionValue),
        NULL,
        0,
        &NumberOfBytesReturned,
        0,
        0);
    if (SOCKET_ERROR == status) 
    {
        DWORD LastError = ::WSAGetLastError();

        if (WSAEOPNOTSUPP == LastError) 
        {
            std::ostringstream out;
            out << "This system is not Windows Windows Server 2012/Windows 8, \n";
            out << "and the call is not supported.\n";
            out << "ErrorNumber: "<< LastError;

            throwException(out.str().c_str());
        }
        else 
        {
            std::ostringstream out;
            out << "TcpipSocket::Loopback Fastpath WSAIoctl failed: ";
            out << "\nErrorNumber: "<< LastError;

            throwException(out.str().c_str());

        }
    }
}
}

问题：我总是收到错误 WSAEOPNOTSUPP 在所有更新的Windows 8 64位上运行示例..

我错过了什么？关于这个例子，它应该直接工作吗？

代码使用VS2012在win 7 x64上编写我使用平台工具集“Visual Studio 2012（v110）”

快速环回套接字Windows 8机器

0 个答案: