158 lines
4.5 KiB
C++
158 lines
4.5 KiB
C++
/*
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Copyright (c) 2007-2016, Arvid Norberg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING 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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#ifndef TORRENT_UDP_SOCKET_HPP_INCLUDED
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#define TORRENT_UDP_SOCKET_HPP_INCLUDED
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#include "libtorrent/socket.hpp"
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#include "libtorrent/io_service.hpp"
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#include "libtorrent/error_code.hpp"
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#include "libtorrent/session_settings.hpp"
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#include "libtorrent/buffer.hpp"
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#include "libtorrent/deadline_timer.hpp"
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#include "libtorrent/debug.hpp"
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#include "libtorrent/span.hpp"
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#include "libtorrent/aux_/allocating_handler.hpp"
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namespace libtorrent
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{
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struct socks5;
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class TORRENT_EXTRA_EXPORT udp_socket : single_threaded
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{
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public:
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udp_socket(io_service& ios);
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enum flags_t {
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peer_connection = 1
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, tracker_connection = 2
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, dont_queue = 4
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, dont_fragment = 8
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};
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bool is_open() const { return m_abort == false; }
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io_service& get_io_service() { return m_socket.get_io_service(); }
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template <typename Handler>
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void async_read(Handler h)
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{
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m_socket.async_receive(null_buffers(), h);
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}
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template <typename Handler>
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void async_write(Handler h)
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{
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m_socket.async_send(null_buffers(), h);
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}
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struct packet
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{
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span<char> data;
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udp::endpoint from;
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error_code error;
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};
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int read(span<packet> pkts, error_code& ec);
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// this is only valid when using a socks5 proxy
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void send_hostname(char const* hostname, int port, span<char const> p
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, error_code& ec, int flags = 0);
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void send(udp::endpoint const& ep, span<char const> p
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, error_code& ec, int flags = 0);
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void bind(udp::endpoint const& ep, error_code& ec);
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void close();
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int local_port() const { return m_bind_port; }
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void set_proxy_settings(aux::proxy_settings const& ps);
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aux::proxy_settings const& get_proxy_settings() { return m_proxy_settings; }
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void set_force_proxy(bool f) { m_force_proxy = f; }
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bool is_closed() const { return m_abort; }
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udp::endpoint local_endpoint(error_code& ec) const
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{ return m_socket.local_endpoint(ec); }
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typedef udp::socket::receive_buffer_size receive_buffer_size;
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typedef udp::socket::send_buffer_size send_buffer_size;
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template <class SocketOption>
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void get_option(SocketOption const& opt, error_code& ec)
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{
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m_socket.get_option(opt, ec);
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}
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template <class SocketOption>
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void set_option(SocketOption const& opt, error_code& ec)
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{
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m_socket.set_option(opt, ec);
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}
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template <class SocketOption>
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void get_option(SocketOption& opt, error_code& ec)
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{
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m_socket.get_option(opt, ec);
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}
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private:
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// non-copyable
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udp_socket(udp_socket const&);
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udp_socket& operator=(udp_socket const&);
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void wrap(udp::endpoint const& ep, span<char const> p, error_code& ec, int flags);
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void wrap(char const* hostname, int port, span<char const> p, error_code& ec, int flags);
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bool unwrap(udp::endpoint& from, span<char>& buf);
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udp::socket m_socket;
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using receive_buffer = std::array<char, 1500>;
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std::unique_ptr<receive_buffer> m_buf;
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std::uint16_t m_bind_port;
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aux::proxy_settings m_proxy_settings;
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std::shared_ptr<socks5> m_socks5_connection;
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// TODO: 3 add a unit test for force-proxy
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bool m_force_proxy:1;
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bool m_abort:1;
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#if TORRENT_USE_ASSERTS
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bool m_started;
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int m_magic;
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#endif
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};
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}
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#endif
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