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construct/include/ircd/net/sock_opts.h

75 lines
2.6 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2018 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. The
// full license for this software is available in the LICENSE file.
#pragma once
#define HAVE_IRCD_NET_SOCK_OPTS_H
namespace ircd::net
{
struct sock_opts;
bool v6only(const socket &);
bool blocking(const socket &);
bool nopush(const socket &);
bool nodelay(const socket &);
bool quickack(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 &);
int attach(const socket &);
// returns true if supported, false if unsupported; failures will throw.
bool v6only(socket &, const bool &);
bool blocking(socket &, const bool &);
bool nopush(socket &, const bool &);
bool nodelay(socket &, const bool &);
bool quickack(socket &, const bool &);
bool keepalive(socket &, const bool &);
bool linger(socket &, const time_t &); // -1 is OFF; >= 0 is ON
bool read_bufsz(socket &, const size_t &bytes);
bool write_bufsz(socket &, const size_t &bytes);
bool read_lowat(socket &, const size_t &bytes);
bool write_lowat(socket &, const size_t &bytes);
bool attach(const int &sd, const int &fd);
bool attach(socket &, const int &fd);
bool detach(const int &sd, const int &fd);
bool detach(socket &, const int &fd);
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 v6only { IGN };
int8_t blocking { IGN }; // Simulates blocking behavior
int8_t nopush { IGN };
int8_t nodelay { IGN };
int8_t quickack { 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 };
int ebpf { -1 };
sock_opts(const socket &); // Get options from socket
sock_opts() = default;
};