PC・Android間のBluetooth通信 ref: http://qiita.com/aratakokubun/items/72f9db560835673e8129

file0.java

// Unique UUID for this application
private static final UUID MY_UUID = UUID.fromString("fa87c0d0-afac-11de-8a39-0800200c9a66");

file1.java

// Unique UUID for this application
private static final UUID MY_UUID = UUID.fromString("00001101-0000-1000-8000-00805F9B34FB");

file2.cpp

    SOCKET sockRecv;
    SOCKADDR_BTH sockAddrBth = {0};

    sockRecv = socket(AF_BTH, SOCK_STREAM, BTHPROTO_RFCOMM);
    if (INVALID_SOCKET == sockRecv) {
        return false;
    }

    sockAddrBth.addressFamily = AF_BTH; // For Bluetooth
    sockAddrBth.port = BT_PORT_ANY;
    if (SOCKET_ERROR == bind(sockRecv, (SOCKADDR *) &sockAddrBth, sizeof(sockAddrBth)))
    {
        closesocket(sockRecv);
        return false;
    }

    int size = sizeof(sockAddrBth);
    getsockname(sockRecv, (SOCKADDR *) &sockAddrBth, &size);

    CSADDR_INFO info = {0};
    info.LocalAddr.lpSockaddr = (LPSOCKADDR) &sockAddrBth;
    info.LocalAddr.iSockaddrLength = sizeof(sockAddrBth);
    info.iSocketType = SOCK_STREAM;
    info.iProtocol = BTHPROTO_RFCOMM;

    WSAQUERYSET set = {0};
    set.dwSize = sizeof(WSAQUERYSET);                              // Must be set to sizeof(WSAQUERYSET)
    set.dwOutputFlags = 0;                                         // Not used
    set.lpszServiceInstanceName = "Server";                        // Recommended.
    set.lpServiceClassId = (LPGUID)&SerialPortServiceClass_UUID;   // !ここのUUID(00001101-0000-1000-8000-00805F9B34FB)はAndroid側とマッチしている必要がある!
    set.lpVersion = NULL;                                          // Not used.
    set.lpszComment = NULL;                                        // Optional.
    set.dwNameSpace = NS_BTH;                                      // Must be NS_BTH.
    set.lpNSProviderId = NULL;                                     // Not required.
    set.lpszContext = NULL;                                        // Not used.
    set.dwNumberOfProtocols = 0;                                   // Not used.
    set.lpafpProtocols = NULL;                                     // Not used.
    set.lpszQueryString = NULL;                                    // not used.
    set.dwNumberOfCsAddrs = 1;                                     // Must be 1.
    set.lpcsaBuffer = &info;                                       // Pointer to a CSADDR_INFO.
    set.lpBlob = NULL;                                             // Optional.

    if (WSASetService(&set, RNRSERVICE_REGISTER, 0) != 0) {
        return false;
    }

    listen(sockRecv, 0);

    SOCKADDR_BTH sab2;
    int ilen = sizeof(sab2);
    // 通信用のsocketを開く．このsocketで通信を行う．
    acceptedSocket = accept(sockRecv, (SOCKADDR *)&sab2, &ilen);
    // 接続用のsocketは必要ないので閉じる
    closesocket(sockRecv);

file3.cpp

void btSend(int* array, int len) {
        int* netArray;
        netArray = (int*)malloc(sizeof(int)*len);
        for (int i = 0; i < len; i++) {
            netArray[i] = htonl(array[i]);
        }
        send(acceptedSocket,  (const char *)netArray, sizeof(int)*len, 0);
}