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construct/include/ircd/net/sock_opts.h
2018-01-07 02:02:41 -08:00

70 lines
2.6 KiB
C++

/*
* Copyright (C) 2017 Charybdis Development Team
* Copyright (C) 2017 Jason Volk <jason@zemos.net>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice is present in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#define HAVE_IRCD_NET_SOCK_OPTS_H
namespace ircd::net
{
struct sock_opts;
bool blocking(const socket &);
bool nodelay(const socket &);
bool keepalive(const socket &);
time_t linger(const socket &);
size_t read_bufsz(const socket &);
size_t write_bufsz(const socket &);
size_t read_lowat(const socket &);
size_t write_lowat(const socket &);
void blocking(socket &, const bool &);
void nodelay(socket &, const bool &);
void keepalive(socket &, const bool &);
void linger(socket &, const time_t &); // -1 is OFF; >= 0 is ON
void read_bufsz(socket &, const size_t &bytes);
void write_bufsz(socket &, const size_t &bytes);
void read_lowat(socket &, const size_t &bytes);
void write_lowat(socket &, const size_t &bytes);
void set(socket &, const sock_opts &);
}
/// Socket options convenience aggregate. This structure allows observation
/// or manipulation of socket options all together. Pass an active socket to
/// the constructor to observe all options. Use net::set(socket, sock_opts) to
/// set all non-ignored options.
struct ircd::net::sock_opts
{
/// Magic value to not set this option on a set() pass.
static constexpr int8_t IGN { std::numeric_limits<int8_t>::min() };
int8_t blocking { IGN }; // Simulates blocking behavior
int8_t nodelay { IGN };
int8_t keepalive { IGN };
time_t linger { IGN }; // -1 is OFF; >= 0 is ON
ssize_t read_bufsz { IGN };
ssize_t write_bufsz { IGN };
ssize_t read_lowat { IGN };
ssize_t write_lowat { IGN };
sock_opts(const socket &); // Get options from socket
sock_opts() = default;
};