first rough version

An overview of the six time values available from curl_easy_getinfo()

curk_easy_perform()

    |

    |--NT

    |--|--CT

    |--|--|--PT

    |--|--|--|--ST

          |--|--|--TT

    |--|--|--|--|--RT

NT = CURLINFO_NAMELOOKUP_TIME. The time it took from the start until the name

     resolving was completed.

CT = CURLINFO_CONNECT_TIME. The time it took from the start until the connect

     to the remote host (or proxy) was completed.

PT = CURLINFO_PRETRANSFER_TIME. The time it took from the start until the file

     transfer is just about to begin. This includes all pre-transfer commands

     and negotiations that are specific to the particular protocol(s)

     involved.

ST = CURLINFO_STARTTRANSFER_TIME. The time it took from the start until the

     first byte is just about to be transferred.

TT = CURLINFO_TOTAL_TIME. Time of the previous transfer. This time does not

     include the connect time (CT), so if you want the complete operation

     time, you should add that.

RT = CURLINFO_REDIRECT_TIME. The time it took for all redirection steps

     include name lookup, connect, pretransfer and transfer before final

     transaction was started. So, this is zero if no redirection took place.