If you see

                connection timed out
                r(2);

    then an Internet connection has timed out.  This can happen when

        a.  the connection between you and the host is slow, or

        b.  the connection between you and the host disappeared and so
            eventually "timed out".

    For (b), wait a while (say 5 minutes) and try again (sometimes pieces of
    the Internet can break for up to a day, but that is rare).  For (a), you
    can reset the limits for what constitutes "timed out".  There are two
    numbers to set.
网速没问题，试了好多次都是这样