使用C ++在Windows上建立蓝牙连接（获取错误10060）

Question

我正试图让2台笔记本电脑连接蓝牙。这是我用来制作服务器的代码：

WSADATA wsd;
WSAStartup (MAKEWORD(1,0), &wsd);

SOCKET server_socket = socket(AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM);

SOCKADDR_BTH sa;
memset(&sa, 0, sizeof(sa));
sa.addressFamily = AF_BTH;
sa.port = 0 & 0xFF;

if(0 != bind(server_socket, (SOCKADDR *)&sa, sizeof(sa)))
{
    std::cout << "BIND ERROR: " << WSAGetLastError () << std::endl;
    closesocket(server_socket);
    return false;
}

if(0 != listen (server_socket, 5))
{
    std::cout << "LISTEN ERROR: " << WSAGetLastError () << std::endl;
    closesocket(server_socket);
    return false;
}

SOCKADDR_BTH sa2;
int size = sizeof(sa2);
SOCKET s2 = accept(server_socket, (SOCKADDR*)&sa2, &size);
if(s2 == INVALID_SOCKET)
{
    std::cout << "ACCEPT ERROR: " << WSAGetLastError () << std::endl;
    return false;
}
else
{
    std::cout << "Connected? " << WSAGetLastError () << std::endl;
}

以及作为客户的以下内容：

WSADATA wsd;
WSAStartup (MAKEWORD(1,0), &wsd);

SOCKET client_socket = socket (AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM);

SOCKADDR_BTH sa;
memset (&sa, 0, sizeof(sa));
sa.addressFamily = AF_BTH;
sa.btAddr = (BTH_ADDR)d.getDeviceAddress();
sa.port = 0;
sa.serviceClassId = *d.getLpServiceClassId();

if(client_socket == INVALID_SOCKET)
{
    std::cout << "SOCKET ERROR: " << WSAGetLastError () << std::endl;
    return false;
}
if (0 != connect (client_socket, (SOCKADDR *)&sa, sizeof(sa))) 
{
    std::cout << "CONNECT ERROR: " << WSAGetLastError () << std::endl;
    return false;
}
else
{
    //std::cout << "CONNECT ERROR: " << WSAGetLastError () << std::endl;
    //Perform error handling.s
    send(client_socket, "ABC",3,0);
    closesocket (client_socket);
    return true;
}

其中“b”是我给出的蓝牙设备作为参数，bluetoothdevice类有以下字段：

LPSOCKADDR local_address;
LPSOCKADDR device_address;
LPGUID lp_service_class_id;

这应该工作。但是当我尝试连接到服务器时，服务器什么也得不到，客户端给我10060错误。

此错误表示：

WSAETIMEDOUT 10060

The I/O timed out at the Bluetooth radio level (PAGE_TIMEOUT).

有没有人在这里与Windows上的蓝牙堆栈一起工作并知道这个错误来自哪里？

Answer 1

您是否使用蓝牙SDP注册了服务？如果不是，我想，您将无法使用客户端代码中的当前方法进行连接。来自MSDN：

The bind function does not automatically advertise the server application using the Bluetooth SDP; applications must call the WSASetService function to be found by remote Bluetooth applications.

另请查看bind和connect funcs的蓝牙文档：

http://msdn.microsoft.com/en-us/library/windows/desktop/aa362901%28v=vs.85%29.aspx http://msdn.microsoft.com/en-us/library/windows/desktop/aa362901%28v=vs.85%29.aspx

据我所知，另一种方法是，您可以尝试在服务器端和客户端明确指定port。但它仅适用于游乐场应用程序。

有关蓝牙使用的更多信息，请参阅http://msdn.microsoft.com/en-us/library/windows/desktop/aa363058%28v=vs.85%29.aspx。