client

void main(int argc, char* argv[])
{
    WSADATA data;

    WORD version = MAKEWORD(2, 2);

    //rozpoczynanie Winsocku
    int wsOk = WSAStartup(version, &data);
    if (wsOk != 0)
    {
        std::cout << "Nie mozna uruchomic Winsocku!" << wsOk;
        return;
    }

    //tworzenie struktury servera
    sockaddr_in server;
    server.sin_family = AF_INET; //AF_INET = IPv4 addresses
    server.sin_port = htons(54000); //konwersja z little do big endian
    inet_pton(AF_INET, "127.0.0.1", &server.sin_addr); //konwersja z string na tablice bajtow

    SOCKET out = socket(AF_INET, SOCK_DGRAM, 0);

    std::string s(argv[0]);
    int sendOk = sendto(out, s.c_str(), s.size() + 1, 0, (sockaddr*)&server, sizeof(server));

    if (sendOk == SOCKET_ERROR)
    {
        std::cout << "That didn't work! " << WSAGetLastError() << '\n';
    }

    //zamykanie polaczenia
    closesocket(out);
    WSACleanup();
}