From 3180dfafccffee5a50f821a97a289efe89a438a5 Mon Sep 17 00:00:00 2001
From: Axel Huebl <axel.huebl@plasma.ninja>
Date: Fri, 21 Jul 2017 15:40:04 +0200
Subject: [PATCH] C-Ares: Remove Internal Header
The `nameser.h` header is a C-Ares internal header which is not
installed with C-Ares.
This fixes build errors with
cmake -DgRPC_CARES_PROVIDER=package ..
---
.../client_channel/resolver/dns/c_ares/grpc_ares_wrapper.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.c b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.c
index 9065e33613..473f6b65f6 100644
--- a/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.c
+++ b/src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_wrapper.c
@@ -33,7 +33,6 @@
#include <grpc/support/string_util.h>
#include <grpc/support/time.h>
#include <grpc/support/useful.h>
-#include <nameser.h>
#include "src/core/ext/filters/client_channel/parse_address.h"
#include "src/core/ext/filters/client_channel/resolver/dns/c_ares/grpc_ares_ev_driver.h"
@@ -358,6 +357,9 @@ static grpc_ares_request *grpc_dns_lookup_ares_impl(
grpc_ares_request_ref(r);
char *service_name;
gpr_asprintf(&service_name, "_grpclb._tcp.%s", host);
+ // see: RFC 1035, section 3.2.4. CLASS values
+ const int ns_c_in = 1; // internet
+ const int ns_t_srv = 33; // SRV record (RFC 2782)
ares_query(*channel, service_name, ns_c_in, ns_t_srv, on_srv_query_done_cb,
r);
gpr_free(service_name);
--
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