Kao server

void main(int argc, char* argv[])
{
    WSAData wsa;
    WSAStartup(0x0202, &wsa);

    SOCKET sock;
    int addr_len, bytes_read;
    char recv_data[1024];
    char send_data[1024];
    sockaddr_in server_addr, client_addr;

    if ((sock = socket(AF_INET, SOCK_DGRAM, 0)) == SOCKET_ERROR)
    {
        return;
    }
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(5000);
    server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
    if (bind(sock, (sockaddr*)&server_addr, sizeof(sockaddr_in)) == SOCKET_ERROR)
    {
        return;
    }

    addr_len = sizeof(sockaddr);

    while (true)
    {
        bytes_read = recvfrom(sock, recv_data, 1024, 0, (sockaddr*)&client_addr, &addr_len);

        //nesto

        sendto(sock, send_data, strlen(send_data), 0, (sockaddr*)&client_addr, sizeof(sockaddr));
    }

    closesocket(sock);
    WSACleanup();
}