diff options
Diffstat (limited to 'iterator/iter_utils.c')
| -rw-r--r-- | iterator/iter_utils.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/iterator/iter_utils.c b/iterator/iter_utils.c index a5aefa9602c2..874dd6850e4e 100644 --- a/iterator/iter_utils.c +++ b/iterator/iter_utils.c @@ -360,6 +360,39 @@ iter_filter_order(struct iter_env* iter_env, struct module_env* env, } } *selected_rtt = low_rtt; + + if (env->cfg->prefer_ip6) { + int got_num6 = 0; + int low_rtt6 = 0; + int i; + prev = NULL; + a = dp->result_list; + for(i = 0; i < got_num; i++) { + swap_to_front = 0; + if(a->addr.ss_family == AF_INET6) { + got_num6++; + swap_to_front = 1; + if(low_rtt6 == 0 || a->sel_rtt < low_rtt6) { + low_rtt6 = a->sel_rtt; + } + } + /* swap to front if IPv6, or move to next result */ + if(swap_to_front && prev) { + n = a->next_result; + prev->next_result = n; + a->next_result = dp->result_list; + dp->result_list = a; + a = n; + } else { + prev = a; + a = a->next_result; + } + } + if(got_num6 > 0) { + got_num = got_num6; + *selected_rtt = low_rtt6; + } + } return got_num; } |