QLocalSocket *clientConnection = server->nextPendingConnection();
    clientConnection->waitForReadyRead(100);
    char *data;
    data = new char[40];
    clientConnection->read(data, 40);
    tg_query *query = (tg_query *)data;

int
forward_query_to_frontend (struct tg_query query)
{

    int retval;
    int sockfd;

    struct sockaddr_un address;
    struct tg_query answer;

    sockfd = socket (AF_UNIX, SOCK_STREAM, 0);

    /*  Name the socket, as agreed with the server.  */
    address.sun_family = AF_UNIX;
    strcpy(address.sun_path, PATH_FRONTEND);

    /*  Now connect our socket to the server's socket.  */
    retval = connect (sockfd, (struct sockaddr *)&address, sizeof(address));

    if(retval == -1)
    {
    close(sockfd);
    return -1;
    }
    // forwards the module query to the frontend
    query.sender = TG_DAEMON;


    retval = send(sockfd, &query, sizeof(struct tg_query), 0);

    retval =  recv(sockfd, &answer, sizeof(answer), 0);

    close(sockfd);
    return answer.query_data; // answer frontend
    
}

    struct tg_query received;
    int retval=-1;
    retval =  recv(socket, &received, sizeof(struct tg_query), MSG_WAITALL);

struct tg 
{
  __u8 sender;
  __u32 seqno;
  __u8 type;
  __u32 query_data;
  __u32 ip[4];
  __u32 sin_port;
  __u8 protocol;
  __u8 family;
};

server = new QLocalServer(this);
if (!server->listen("/tmp/tg"))  {}
connect(server, SIGNAL(newConnection()), this, SLOT(read_socket()));

void Window::read_socket()
{
    QLocalSocket *clientConnection = server->nextPendingConnection();
    QDataStream in(clientConnection);
    in.setVersion(QDataStream::Qt_4_0);
        clientConnection->waitForReadyRead(10000); // без него одни нули
        in >> query-> sender;
    in >> query->seqno;
    in >> query->query_type;
    in >> query->query_data;
    in >> query->ip1;
    in >> query->ip2;
    in >> query->ip3;
    in >> query->ip4;
    in >> query->sin_port;
    in >> query->protocol;
    in >> query->family;
        ...
}

struct tg_query 
{
    quint8 sender;
    quint32 seqno;
    quint8 query_type;
    quint32 query_data;
    quint32 ip[4];
    quint32 sin_port;
    quint8 protocol;
    quint8 family;
};