1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
//
//
// Copyright 2020 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//
#include "test/core/util/resolve_localhost_ip46.h"
#include <memory>
#include <vector>
#include "absl/status/statusor.h"
#include <grpc/support/log.h>
#include <grpc/support/sync.h>
#include "src/core/lib/iomgr/resolve_address.h"
#include "src/core/lib/iomgr/resolved_address.h"
#include "src/core/lib/iomgr/sockaddr.h"
namespace grpc_core {
namespace {
bool localhost_to_ipv4 = false;
bool localhost_to_ipv6 = false;
gpr_once g_resolve_localhost_ipv46 = GPR_ONCE_INIT;
void InitResolveLocalhost() {
absl::StatusOr<std::vector<grpc_resolved_address>> addresses_or =
GetDNSResolver()->LookupHostnameBlocking("localhost", "https");
GPR_ASSERT(addresses_or.ok());
for (const auto& addr : *addresses_or) {
const grpc_sockaddr* sock_addr =
reinterpret_cast<const grpc_sockaddr*>(&addr);
if (sock_addr->sa_family == GRPC_AF_INET) {
localhost_to_ipv4 = true;
} else if (sock_addr->sa_family == GRPC_AF_INET6) {
localhost_to_ipv6 = true;
}
}
}
} // namespace
void LocalhostResolves(bool* ipv4, bool* ipv6) {
gpr_once_init(&g_resolve_localhost_ipv46, InitResolveLocalhost);
*ipv4 = localhost_to_ipv4;
*ipv6 = localhost_to_ipv6;
}
} // namespace grpc_core
|
