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Drop the minimum guard lifetime back down to one month

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Mike believes that raising the default to 2 months with no way to lower
it may create horrible load-balancing issues.
This commit is contained in:
Nick Mathewson 2013-03-11 22:16:25 -04:00
parent cf734a08f6
commit 18752bca5b
2 changed files with 5 additions and 3 deletions
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2
doc/tor.1.txt
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@ -962,7 +962,7 @@ The following options are useful only for clients (that is, if
**GuardLifetime** __N__ **days**|**weeks**|**months**::
If nonzero, and UseEntryGuards is set, minimum time to keep a guard before
picking a new one. If zero, we use the GuardLifetime parameter from the
consensus directory. No value here may be less than 2 months or greater
consensus directory. No value here may be less than 1 month or greater
than 5 years; out-of-range values are clamped. (Default: 0)
**SafeSocks** **0**|**1**::

6
src/or/circuitbuild.c
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@ -4290,13 +4290,15 @@ entry_guard_free(entry_guard_t *e)
/**
* Return the minimum lifetime of working entry guard, in seconds,
* as given in the consensus networkstatus.
* as given in the consensus networkstatus. (Plus CHOSEN_ON_DATE_SLOP,
* so that we can do the chosen_on_date randomization while achieving the
* desired minimum lifetime.)
*/
static int32_t
guards_get_lifetime(void)
{
const or_options_t *options = get_options();
#define DFLT_GUARD_LIFETIME (86400 * 60) /* Two months. */
#define DFLT_GUARD_LIFETIME (86400 * 30) /* One month. */
#define MIN_GUARD_LIFETIME (86400 * 60) /* Two months. */
#define MAX_GUARD_LIFETIME (86400 * 1826) /* Five years. */