mirror of
https://github.com/OpenVPN/openvpn3.git
synced 2024-09-20 20:13:05 +02:00
88 lines
2.6 KiB
C++
88 lines
2.6 KiB
C++
// OpenVPN -- An application to securely tunnel IP networks
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// over a single port, with support for SSL/TLS-based
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// session authentication and key exchange,
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// packet encryption, packet authentication, and
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// packet compression.
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//
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// Copyright (C) 2012-2020 OpenVPN Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License Version 3
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// as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program in the COPYING file.
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// If not, see <http://www.gnu.org/licenses/>.
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#ifndef OPENVPN_COMMON_SOCKOPT_H
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#define OPENVPN_COMMON_SOCKOPT_H
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#include <openvpn/common/platform.hpp>
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#if !defined(OPENVPN_PLATFORM_WIN)
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/tcp.h>
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#include <openvpn/common/exception.hpp>
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namespace openvpn {
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namespace SockOpt {
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#ifdef SO_REUSEPORT
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// set SO_REUSEPORT for inter-thread load balancing
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inline void reuseport(const int fd)
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{
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int on = 1;
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if (::setsockopt(fd, SOL_SOCKET, SO_REUSEPORT,
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(void *)&on, sizeof(on)) < 0)
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throw Exception("error setting SO_REUSEPORT on socket");
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}
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#endif
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// set SO_REUSEADDR for TCP
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inline void reuseaddr(const int fd)
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{
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int on = 1;
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if (::setsockopt(fd, SOL_SOCKET, SO_REUSEADDR,
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(void *)&on, sizeof(on)) < 0)
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throw Exception("error setting SO_REUSEADDR on socket");
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}
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// set TCP_NODELAY for TCP
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inline void tcp_nodelay(const int fd)
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{
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int state = 1;
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if (::setsockopt(fd, IPPROTO_TCP, TCP_NODELAY,
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(void *)&state, sizeof(state)) != 0)
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throw Exception("error setting TCP_NODELAY on socket");
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}
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// set FD_CLOEXEC to prevent fd from being passed across execs
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inline void set_cloexec(const int fd)
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{
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if (::fcntl(fd, F_SETFD, FD_CLOEXEC) < 0)
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throw Exception("error setting FD_CLOEXEC on file-descriptor/socket");
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}
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// set non-block mode on socket
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static inline void set_nonblock(const int fd)
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{
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if (::fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
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throw Exception("error setting socket to non-blocking mode");
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}
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}
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}
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#endif
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#endif
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