mirror of
https://github.com/matrix-construct/construct
synced 2024-10-31 02:48:58 +01:00
392 lines
9 KiB
C++
392 lines
9 KiB
C++
/*
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* Copyright (C) 2016 Charybdis Development Team
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* Copyright (C) 2016 Jason Volk <jason@zemos.net>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#define HAVE_IRCD_CLIENT_SOCKET_H
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#include <boost/asio.hpp>
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#include <boost/asio/ssl.hpp>
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#include <boost/asio/steady_timer.hpp>
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#include "ctx/continuation.h"
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namespace ircd {
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namespace asio = boost::asio;
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namespace ip = asio::ip;
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using boost::system::error_code;
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using asio::steady_timer;
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IRCD_EXCEPTION(error, nxdomain)
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extern asio::ssl::context sslv23_client;
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ip::address address(const ip::tcp::endpoint &);
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std::string hostaddr(const ip::address &);
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std::string hostaddr(const ip::tcp::endpoint &);
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uint16_t port(const ip::tcp::endpoint &);
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} // namespace ircd
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namespace ircd {
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struct socket
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:std::enable_shared_from_this<socket>
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{
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struct init;
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struct stat;
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struct scope_timeout;
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struct io;
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enum dc
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{
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RST, // hardest disconnect
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FIN, // graceful shutdown both directions
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FIN_SEND, // graceful shutdown send side
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FIN_RECV, // graceful shutdown recv side
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};
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struct stat
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{
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size_t bytes {0};
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size_t calls {0};
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};
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using message_flags = boost::asio::socket_base::message_flags;
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using handshake_type = asio::ssl::stream<ip::tcp::socket>::handshake_type;
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using handler = std::function<void (const error_code &) noexcept>;
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asio::ssl::stream<ip::tcp::socket> ssl;
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ip::tcp::socket &sd;
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steady_timer timer;
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stat in, out;
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bool timedout;
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void handle_timeout(const std::weak_ptr<socket> wp, const error_code &ec) noexcept;
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bool handle_ready(const error_code &ec) noexcept;
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public:
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operator const ip::tcp::socket &() const { return sd; }
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operator ip::tcp::socket &() { return sd; }
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ip::tcp::endpoint remote() const { return sd.remote_endpoint(); }
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ip::tcp::endpoint local() const { return sd.local_endpoint(); }
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bool connected() const noexcept;
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auto available() const { return sd.available(); }
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template<class duration> void set_timeout(const duration &, handler);
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template<class duration> void set_timeout(const duration &);
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template<class iov> auto read_some(const iov &, error_code &);
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template<class iov> auto read_some(const iov &);
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template<class iov> auto read(const iov &, error_code &);
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template<class iov> auto read(const iov &);
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template<class iov> auto write_some(const iov &, error_code &);
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template<class iov> auto write_some(const iov &);
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template<class iov> auto write(const iov &, error_code &);
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template<class iov> auto write(const iov &);
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// Asynchronous 'ready' closure
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void operator()(const milliseconds &timeout, handler);
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void operator()(handler);
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void cancel();
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void disconnect(const dc &type = dc::FIN);
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void connect(const ip::tcp::endpoint &ep, const milliseconds &timeout = -1ms);
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socket(const std::string &host,
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const uint16_t &port,
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const milliseconds &timeout = -1ms,
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asio::ssl::context &ssl = sslv23_client,
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boost::asio::io_service *const &ios = ircd::ios);
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socket(const ip::tcp::endpoint &remote,
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const milliseconds &timeout = -1ms,
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asio::ssl::context &ssl = sslv23_client,
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boost::asio::io_service *const &ios = ircd::ios);
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socket(asio::ssl::context &ssl = sslv23_client,
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boost::asio::io_service *const &ios = ircd::ios);
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~socket() noexcept;
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};
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class socket::scope_timeout
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{
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socket *s;
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public:
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scope_timeout(socket &, const milliseconds &timeout, const socket::handler &handler);
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scope_timeout(socket &, const milliseconds &timeout);
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scope_timeout(const scope_timeout &) = delete;
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scope_timeout &operator=(const scope_timeout &) = delete;
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~scope_timeout() noexcept;
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};
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class socket::io
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{
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struct socket &sock;
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struct stat &stat;
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size_t bytes;
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public:
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operator size_t() const;
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io(struct socket &, struct stat &, const std::function<size_t ()> &closure);
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};
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struct socket::init
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{
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init();
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~init() noexcept;
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};
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template<class iov> size_t write(socket &, const iov &); // write_all
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template<class iov> size_t write(socket &, iov &); // write_some
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size_t write(socket &, const char *const &buf, const size_t &size);
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size_t write(socket &, const string_view &);
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template<class iov> size_t read(socket &, const iov &); // read_all
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template<class iov> size_t read(socket &, iov &); // read_some
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size_t read(socket &, char *const &buf, const size_t &max);
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template<class iov>
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size_t
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read(socket &socket,
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iov &bufs)
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{
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const auto read(socket.read_some(bufs));
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const auto consumed(consume(bufs, read));
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assert(read == consumed);
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return read;
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}
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template<class iov>
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size_t
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read(socket &socket,
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const iov &bufs)
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{
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return socket.read(bufs);
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}
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template<class iov>
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size_t
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write(socket &socket,
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iov &bufs)
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{
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const auto wrote(socket.write_some(bufs));
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const auto consumed(consume(bufs, wrote));
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assert(wrote == consumed);
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return consumed;
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}
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template<class iov>
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size_t
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write(socket &socket,
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const iov &bufs)
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{
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return socket.write(bufs);
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}
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inline
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socket::io::io(struct socket &sock,
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struct stat &stat,
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const std::function<size_t ()> &closure)
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:sock{sock}
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,stat{stat}
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,bytes{closure()}
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{
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stat.bytes += bytes;
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stat.calls++;
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}
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inline
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socket::io::operator size_t()
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const
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{
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return bytes;
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}
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template<class iov>
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auto
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socket::write(const iov &bufs)
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{
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return io(*this, out, [&]
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{
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return async_write(ssl, bufs, yield(continuation()));
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});
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}
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template<class iov>
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auto
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socket::write(const iov &bufs,
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error_code &ec)
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{
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return io(*this, out, [&]
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{
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return async_write(ssl, bufs, yield(continuation())[ec]);
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});
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}
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template<class iov>
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auto
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socket::write_some(const iov &bufs)
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{
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return io(*this, out, [&]
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{
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return ssl.async_write_some(bufs, yield(continuation()));
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});
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}
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template<class iov>
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auto
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socket::write_some(const iov &bufs,
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error_code &ec)
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{
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return io(*this, out, [&]
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{
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return ssl.async_write_some(bufs, yield(continuation())[ec]);
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});
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}
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template<class iov>
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auto
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socket::read(const iov &bufs)
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{
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return io(*this, in, [&]
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{
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const auto ret(async_read(ssl, bufs, yield(continuation())));
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if(unlikely(!ret))
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throw boost::system::system_error(boost::asio::error::eof);
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return ret;
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});
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}
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template<class iov>
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auto
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socket::read(const iov &bufs,
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error_code &ec)
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{
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return io(*this, in, [&]
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{
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return async_read(ssl, bufs, yield(continuation())[ec]);
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});
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}
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template<class iov>
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auto
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socket::read_some(const iov &bufs)
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{
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return io(*this, in, [&]
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{
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const auto ret(ssl.async_read_some(bufs, yield(continuation())));
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if(unlikely(!ret))
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throw boost::system::system_error(boost::asio::error::eof);
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return ret;
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});
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}
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template<class iov>
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auto
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socket::read_some(const iov &bufs,
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error_code &ec)
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{
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return io(*this, in, [&]
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{
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return ssl.async_read_some(bufs, yield(continuation())[ec]);
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});
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}
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template<class duration>
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void
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socket::set_timeout(const duration &t)
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{
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if(t < duration(0))
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return;
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timer.expires_from_now(t);
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timer.async_wait(std::bind(&socket::handle_timeout, this, weak_from(*this), ph::_1));
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}
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template<class duration>
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void
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socket::set_timeout(const duration &t,
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handler h)
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{
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if(t < duration(0))
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return;
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timer.expires_from_now(t);
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timer.async_wait(std::move(h));
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}
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} // namespace ircd
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inline uint16_t
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ircd::port(const ip::tcp::endpoint &ep)
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{
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return ep.port();
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}
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inline std::string
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ircd::hostaddr(const ip::tcp::endpoint &ep)
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{
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return hostaddr(address(ep));
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}
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inline std::string
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ircd::hostaddr(const ip::address &addr)
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{
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return addr.to_string();
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}
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inline boost::asio::ip::address
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ircd::address(const ip::tcp::endpoint &ep)
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{
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return ep.address();
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}
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inline
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ircd::buffer::mutable_buffer::operator boost::asio::mutable_buffer()
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const
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{
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return boost::asio::mutable_buffer
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{
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data(*this), size(*this)
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};
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}
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inline
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ircd::buffer::const_buffer::operator boost::asio::const_buffer()
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const
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{
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return boost::asio::const_buffer
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{
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data(*this), size(*this)
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};
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}
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