Re: [tor-dev] information about "last_restarted"

On 9/24/12 6:16 PM, succer110@tiscali.it wrote:

Hi everyone tor devel! I would like to know more information about last_restarted information.

• It's possibile to forge this kind of data or is somehow certified by

the tor network?

last_restarted is computed from the descriptor publication time minus the contained uptime. The uptime value is not certified by the Tor network.

Sometime, while sampling hourly some data by onionoo i've noticed some difference in the uptime by + or - a few seconds in this value.

• Any idea of how this is possible?!

A few seconds sounds like rounding errors or minor clock deviations.

• In which file do i find the code that handle this value?

https://gitweb.torproject.org/onionoo.git/blob/HEAD:src/org/torproject/onion...

Best, Karsten