The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#) https://grpc.io/
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/*
*
* Copyright 2015 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 <stdio.h>
#include <string.h>
#include <grpc/support/alloc.h>
#include <grpc/support/log.h>
#include "test/cpp/naming/dns_test_util.h"
#ifdef GPR_WINDOWS
#include "src/core/lib/iomgr/sockaddr_windows.h"
#include "src/core/lib/iomgr/socket_windows.h"
#define BAD_SOCKET_RETURN_VAL INVALID_SOCKET
#else
#include "src/core/lib/iomgr/sockaddr_posix.h"
#define BAD_SOCKET_RETURN_VAL -1
#endif
namespace grpc {
namespace testing {
FakeNonResponsiveDNSServer::FakeNonResponsiveDNSServer(int port) {
udp_socket_ = socket(AF_INET6, SOCK_DGRAM, 0);
tcp_socket_ = socket(AF_INET6, SOCK_STREAM, 0);
if (udp_socket_ == BAD_SOCKET_RETURN_VAL) {
gpr_log(GPR_DEBUG, "Failed to create UDP ipv6 socket");
abort();
}
if (tcp_socket_ == BAD_SOCKET_RETURN_VAL) {
gpr_log(GPR_DEBUG, "Failed to create TCP ipv6 socket");
abort();
}
sockaddr_in6 addr;
memset(&addr, 0, sizeof(addr));
addr.sin6_family = AF_INET6;
addr.sin6_port = htons(port);
((char*)&addr.sin6_addr)[15] = 1;
if (bind(udp_socket_, (const sockaddr*)&addr, sizeof(addr)) != 0) {
gpr_log(GPR_DEBUG, "Failed to bind UDP ipv6 socket to [::1]:%d", port);
abort();
}
#ifdef GPR_WINDOWS
char val = 1;
if (setsockopt(tcp_socket_, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)) ==
SOCKET_ERROR) {
gpr_log(GPR_DEBUG,
"Failed to set SO_REUSEADDR on TCP ipv6 socket to [::1]:%d", port);
abort();
}
#else
int val = 1;
if (setsockopt(tcp_socket_, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val)) !=
0) {
gpr_log(GPR_DEBUG,
"Failed to set SO_REUSEADDR on TCP ipv6 socket to [::1]:%d", port);
abort();
}
#endif
if (bind(tcp_socket_, (const sockaddr*)&addr, sizeof(addr)) != 0) {
gpr_log(GPR_DEBUG, "Failed to bind TCP ipv6 socket to [::1]:%d", port);
abort();
}
if (listen(tcp_socket_, 100)) {
gpr_log(GPR_DEBUG, "Failed to listen on TCP ipv6 socket to [::1]:%d", port);
abort();
}
}
FakeNonResponsiveDNSServer::~FakeNonResponsiveDNSServer() {
#ifdef GPR_WINDOWS
closesocket(udp_socket_);
closesocket(tcp_socket_);
#else
close(udp_socket_);
close(tcp_socket_);
#endif
}
} // namespace testing
} // namespace grpc