inline std::string dateTimeNow()
{
    const int RFC1123_TIME_LEN = 29;
    time_t t;
    struct tm *tm;

    std::string ret;
    ret.resize(RFC1123_TIME_LEN);

    time(&t);
    tm = localtime(&t);

    strftime(&ret[0], RFC1123_TIME_LEN + 1, "%a, %d %b %Y %H:%M:%S %z", tm);

    return ret;
}