diff options
Diffstat (limited to 'src/or/networkstatus.c')
| -rw-r--r-- | src/or/networkstatus.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/or/networkstatus.c b/src/or/networkstatus.c index 2843d06262..61cca1b9b6 100644 --- a/src/or/networkstatus.c +++ b/src/or/networkstatus.c @@ -1507,6 +1507,32 @@ networkstatus_consensus_is_already_downloading(const char *resource) return answer; } +/* Does the current, reasonably live consensus have IPv6 addresses? + * Returns 1 if there is a reasonably live consensus and its consensus method + * includes IPv6 addresses in the consensus. + * Otherwise, if there is no consensus, or the method does not include IPv6 + * addresses, returns 0. */ +int +networkstatus_consensus_has_ipv6(const or_options_t* options) +{ + const networkstatus_t *cons = networkstatus_get_reasonably_live_consensus( + approx_time(), + usable_consensus_flavor()); + + /* If we have no consensus, we have no IPv6 in it */ + if (!cons) { + return 0; + } + + /* Different flavours of consensus gained IPv6 at different times */ + if (we_use_microdescriptors_for_circuits(options)) { + return + cons->consensus_method >= MIN_METHOD_FOR_A_LINES_IN_MICRODESC_CONSENSUS; + } else { + return cons->consensus_method >= MIN_METHOD_FOR_A_LINES; + } +} + /** Given two router status entries for the same router identity, return 1 if * if the contents have changed between them. Otherwise, return 0. */ static int |