socket come: \macro{EMFILE}, \macro{EINVAL}, \macro{ENOSR}, \macro{ENOBUFS},
\macro{EFAULT}, \macro{EPERM}, \macro{ECONNABORTED},
\macro{ESOCKTNOSUPPORT}, \macro{EPROTONOSUPPORT}, \macro{ETIMEDOUT},
socket come: \macro{EMFILE}, \macro{EINVAL}, \macro{ENOSR}, \macro{ENOBUFS},
\macro{EFAULT}, \macro{EPERM}, \macro{ECONNABORTED},
\macro{ESOCKTNOSUPPORT}, \macro{EPROTONOSUPPORT}, \macro{ETIMEDOUT},