mirror of https://github.com/grpc/grpc.git
yang-g
5 years ago
parent
49ede8e078
commit
976fff1797
17 changed files with 69 additions and 18 deletions
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/*
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* |
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* Copyright 2020 gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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#include <grpc/support/port_platform.h> |
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#include "src/core/lib/iomgr/port.h" |
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#ifdef GRPC_POSIX_SOCKET_UTILS_COMMON |
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#include <netinet/in.h> |
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#include "src/core/lib/iomgr/socket_utils_posix.h" |
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#ifndef GRPC_SET_SOCKET_DUALSTACK_CUSTOM |
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/* This should be 0 in production, but it may be enabled for testing or
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debugging purposes, to simulate an environment where IPv6 sockets can't |
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also speak IPv4. */ |
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int grpc_forbid_dualstack_sockets_for_testing = 0; |
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int grpc_set_socket_dualstack(int fd) { |
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if (!grpc_forbid_dualstack_sockets_for_testing) { |
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const int off = 0; |
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return 0 == setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &off, sizeof(off)); |
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} else { |
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/* Force an IPv6-only socket, for testing purposes. */ |
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const int on = 1; |
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setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &on, sizeof(on)); |
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return 0; |
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} |
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} |
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#endif // GRPC_SET_SOCKET_DUALSTACK_CUSTOM
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#endif // GRPC_POSIX_SOCKET_UTILS_COMMON
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