From dd2c3cf23afe0c1e11770157a8fdedb3c4146d2b Mon Sep 17 00:00:00 2001
From: Alexander Polcyn <apolcyn@google.com>
Date: Tue, 12 Sep 2017 13:54:37 -0700
Subject: [PATCH] fix handling of service config choosing when percentage is
zero
---
.../client_channel/resolver/dns/c_ares/dns_resolver_ares.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.c b/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.c
index b87a3b70820..371c59b8cf3 100644
--- a/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.c
+++ b/src/core/ext/filters/client_channel/resolver/dns/c_ares/dns_resolver_ares.c
@@ -204,7 +204,7 @@ static char *choose_service_config(char *service_config_choice_json) {
int random_pct = rand() % 100;
int percentage;
if (sscanf(field->value, "%d", &percentage) != 1 ||
- random_pct > percentage) {
+ random_pct > percentage || percentage == 0) {
service_config_json = NULL;
break;
}