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Turn off by-default use of client-side DNS cacheing.

This commit is contained in:
Nick Mathewson 2012-11-25 15:36:35 -05:00
parent 7315a67646
commit ac990aa44a
2 changed files with 4 additions and 3 deletions
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4
doc/tor.1.txt
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@ -946,7 +946,9 @@ The following options are useful only for clients (that is, if
nodes via this connection.
**UseIPv4Cache**;;
Tells the client to use any cached IPv4 DNS answers we have when making
requests via this connection. (On by default.)
requests via this connection. (NOTE: This option, along UseIPv6Cache
and UseDNSCache, can harm your anonymity, and probably
won't help performance as much as you might expect. Use with care!)
**UseIPv6Cache**;;
Tells the client to use any cached IPv6 DNS answers we have when making
requests via this connection.

3
src/or/config.c
View File

@ -4596,7 +4596,6 @@ port_cfg_new(void)
port_cfg_t *cfg = tor_malloc_zero(sizeof(port_cfg_t));
cfg->ipv4_traffic = 1;
cfg->cache_ipv4_answers = 1;
cfg->use_cached_ipv4_answers = 1;
return cfg;
}
@ -4844,7 +4843,7 @@ parse_port_config(smartlist_t *out,
int no_listen = 0, no_advertise = 0, all_addrs = 0,
bind_ipv4_only = 0, bind_ipv6_only = 0,
ipv4_traffic = 1, ipv6_traffic = 0, prefer_ipv6 = 0,
cache_ipv4 = 1, use_cached_ipv4 = 1,
cache_ipv4 = 1, use_cached_ipv4 = 0,
cache_ipv6 = 0, use_cached_ipv6 = 0;
smartlist_split_string(elts, ports->value, NULL,