| /** @file |
| |
| A brief file description |
| |
| @section license License |
| |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you 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. |
| */ |
| |
| /**************************************************************************** |
| |
| SocketManager.cc |
| ****************************************************************************/ |
| #include "tscore/ink_platform.h" |
| #include "P_EventSystem.h" |
| |
| #include "tscore/TextBuffer.h" |
| |
| SocketManager socketManager; |
| |
| #if !HAVE_ACCEPT4 |
| static int |
| accept4(int sockfd, struct sockaddr *addr, socklen_t *addrlen, int flags) |
| { |
| int fd, err; |
| |
| do { |
| fd = accept(sockfd, addr, addrlen); |
| if (likely(fd >= 0)) |
| break; |
| } while (transient_error()); |
| |
| if ((fd >= 0) && (flags & SOCK_CLOEXEC) && (safe_fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)) { |
| err = errno; |
| close(fd); |
| errno = err; |
| return -1; |
| } |
| |
| if ((fd >= 0) && (flags & SOCK_NONBLOCK) && (safe_nonblocking(fd) < 0)) { |
| err = errno; |
| close(fd); |
| errno = err; |
| return -1; |
| } |
| |
| return fd; |
| } |
| #endif |
| |
| int |
| SocketManager::accept4(int s, struct sockaddr *addr, socklen_t *addrlen, int flags) |
| { |
| do { |
| int fd = ::accept4(s, addr, addrlen, flags); |
| if (likely(fd >= 0)) { |
| return fd; |
| } |
| } while (transient_error()); |
| |
| return -errno; |
| } |
| |
| SocketManager::SocketManager() : pagesize(ats_pagesize()) {} |
| |
| SocketManager::~SocketManager() |
| { |
| // free the hash table and values |
| } |
| |
| int |
| SocketManager::ink_bind(int s, struct sockaddr const *name, int namelen, short Proto) |
| { |
| (void)Proto; |
| return safe_bind(s, name, namelen); |
| } |
| |
| int |
| SocketManager::close(int s) |
| { |
| int res; |
| |
| if (s == 0) { |
| return -EACCES; |
| } else if (s < 0) { |
| return -EINVAL; |
| } |
| |
| do { |
| res = ::close(s); |
| if (res == -1) { |
| res = -errno; |
| } |
| } while (res == -EINTR); |
| return res; |
| } |
| |
| bool |
| SocketManager::fastopen_supported() |
| { |
| static const unsigned TFO_CLIENT_ENABLE = 1; |
| |
| ats_scoped_fd fd(::open("/proc/sys/net/ipv4/tcp_fastopen", O_RDONLY)); |
| int value = 0; |
| |
| if (fd) { |
| TextBuffer buffer(16); |
| |
| buffer.slurp(fd.get()); |
| value = atoi(buffer.bufPtr()); |
| } |
| |
| return value & TFO_CLIENT_ENABLE; |
| } |