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Contents
/*
*
* 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 <grpc/support/port_platform.h>
#include "src/core/lib/iomgr/port.h"
#ifdef GRPC_POSIX_SOCKET_UTILS_COMMON
#include <netinet/in.h>
#include "src/core/lib/iomgr/socket_utils_posix.h"
#ifndef GRPC_SET_SOCKET_DUALSTACK_CUSTOM
/* This should be 0 in production, but it may be enabled for testing or
debugging purposes, to simulate an environment where IPv6 sockets can't
also speak IPv4. */
int grpc_forbid_dualstack_sockets_for_testing = 0;
int grpc_set_socket_dualstack(int fd) {
if (!grpc_forbid_dualstack_sockets_for_testing) {
const int off = 0;
return 0 == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &off, sizeof(off));
} else {
/* Force an IPv6-only socket, for testing purposes. */
const int on = 1;
setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on));
return 0;
}
}
#endif // GRPC_SET_SOCKET_DUALSTACK_CUSTOM
#endif // GRPC_POSIX_SOCKET_UTILS_COMMON
Version data entries
22 entries across 22 versions & 1 rubygems