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construct/include/ircd/sock.h

246 lines
6.5 KiB
C++

/*
* Copyright (C) 2016 Charybdis Development Team
* Copyright (C) 2016 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_CLIENT_SOCK_H
#ifdef __cplusplus
#include <boost/asio.hpp>
#include <boost/asio/steady_timer.hpp>
#include "bufs.h"
#include "ctx_ctx.h"
namespace ircd {
namespace ip = boost::asio::ip;
using boost::system::error_code;
using boost::asio::steady_timer;
struct sock
:std::enable_shared_from_this<sock>
{
using message_flags = boost::asio::socket_base::message_flags;
ip::tcp::socket sd;
steady_timer timer;
bool timedout;
operator const ip::tcp::socket &() const { return sd; }
operator ip::tcp::socket &() { return sd; }
ip::tcp::endpoint remote() const { return sd.remote_endpoint(); }
ip::tcp::endpoint local() const { return sd.local_endpoint(); }
void handle_timeout(const std::weak_ptr<sock>, const error_code &);
template<class duration> void set_timeout(const duration &);
template<class mutable_buffers> auto recv_some(const mutable_buffers &, error_code &ec, const message_flags & = 0);
template<class mutable_buffers> auto recv_some(const mutable_buffers &, const message_flags & = 0);
template<class mutable_buffers> auto recv(const mutable_buffers &, error_code &ec);
template<class mutable_buffers> auto recv(const mutable_buffers &);
template<class const_buffers> auto send_some(const const_buffers &, error_code &ec, const message_flags & = 0);
template<class const_buffers> auto send_some(const const_buffers &, const message_flags & = 0);
template<class const_buffers> auto send(const const_buffers &, error_code &ec);
template<class const_buffers> auto send(const const_buffers &);
void disconnect(const dc &type = dc::FIN);
sock(boost::asio::io_service *const &ios = ircd::ios);
};
ip::address remote_address(const sock &);
std::string remote_ip(const sock &);
uint16_t remote_port(const sock &);
ip::address local_address(const sock &);
std::string local_ip(const sock &);
uint16_t local_port(const sock &);
inline
sock::sock(boost::asio::io_service *const &ios)
:sd{*ios}
,timer{*ios}
{
}
inline void
sock::disconnect(const dc &type)
{
if(sd.is_open()) switch(type)
{
default:
case dc::RST: sd.close(); break;
case dc::FIN: sd.shutdown(ip::tcp::socket::shutdown_both); break;
case dc::FIN_SEND: sd.shutdown(ip::tcp::socket::shutdown_send); break;
case dc::FIN_RECV: sd.shutdown(ip::tcp::socket::shutdown_receive); break;
}
}
// Block until entirely transmitted
template<class const_buffers>
auto
sock::send(const const_buffers &bufs)
{
const auto ret(async_write(sd, bufs, yield(continuation())));
timer.cancel();
return ret;
}
template<class const_buffers>
auto
sock::send(const const_buffers &bufs,
error_code &ec)
{
const auto ret(async_write(sd, bufs, yield(continuation())[ec]));
timer.cancel();
return ret;
}
// Block until something transmitted, returns amount
template<class const_buffers>
auto
sock::send_some(const const_buffers &bufs,
const message_flags &flags)
{
return sd.async_send(bufs, flags, yield(continuation()));
}
template<class const_buffers>
auto
sock::send_some(const const_buffers &bufs,
error_code &ec,
const message_flags &flags)
{
return sd.async_send(bufs, flags, yield(continuation())[ec]);
}
// Block until the buffers are completely full
template<class mutable_buffers>
auto
sock::recv(const mutable_buffers &bufs)
{
const auto ret(async_read(sd, bufs, yield(continuation())));
timer.cancel();
return ret;
}
template<class mutable_buffers>
auto
sock::recv(const mutable_buffers &bufs,
error_code &ec)
{
const auto ret(async_read(sd, bufs, yield(continuation())[ec]));
timer.cancel();
return ret;
}
// Block until something in buffers, returns size
template<class mutable_buffers>
auto
sock::recv_some(const mutable_buffers &bufs,
const message_flags &flags)
{
return sd.async_receive(bufs, flags, yield(continuation()));
}
template<class mutable_buffers>
auto
sock::recv_some(const mutable_buffers &bufs,
error_code &ec,
const message_flags &flags)
{
return sd.async_receive(bufs, flags, yield(continuation())[ec]);
}
template<class duration>
void
sock::set_timeout(const duration &t)
{
if(t < duration(0))
return;
timer.expires_from_now(t);
timer.async_wait(std::bind(&sock::handle_timeout, this, shared_from_this(), ph::_1));
}
inline void
sock::handle_timeout(const std::weak_ptr<sock> wp,
const error_code &ec)
{
using namespace boost::system::errc;
if(!wp.expired()) switch(ec.value())
{
case success:
{
timedout = true;
error_code sd_ec;
sd.cancel(sd_ec);
return;
}
case operation_canceled:
timedout = false;
return;
default:
log::error("sock::handle_timeout(): unexpected: %s\n", ec.message().c_str());
return;
}
}
inline uint16_t
local_port(const sock &sock)
{
return sock.local().port();
}
inline std::string
local_ip(const sock &sock)
{
return local_address(sock).to_string();
}
inline ip::address
local_address(const sock &sock)
{
return sock.local().address();
}
inline uint16_t
remote_port(const sock &sock)
{
return sock.remote().port();
}
inline std::string
remote_ip(const sock &sock)
{
return remote_address(sock).to_string();
}
inline ip::address
remote_address(const sock &sock)
{
return sock.remote().address();
}
} // namespace ircd
#endif // __cplusplus