244 lines
7.4 KiB
C++
244 lines
7.4 KiB
C++
/*
|
|
|
|
Copyright (c) 2003-2016, Arvid Norberg
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
|
|
* Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
* Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in
|
|
the documentation and/or other materials provided with the distribution.
|
|
* Neither the name of the author nor the names of its
|
|
contributors may be used to endorse or promote products derived
|
|
from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS 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.
|
|
|
|
*/
|
|
|
|
#ifndef TORRENT_SOCKET_HPP_INCLUDED
|
|
#define TORRENT_SOCKET_HPP_INCLUDED
|
|
|
|
#include "libtorrent/config.hpp"
|
|
|
|
#include "libtorrent/aux_/disable_warnings_push.hpp"
|
|
|
|
// if building as Objective C++, asio's template
|
|
// parameters Protocol has to be renamed to avoid
|
|
// colliding with keywords
|
|
|
|
#ifdef __OBJC__
|
|
#define Protocol Protocol_
|
|
#endif
|
|
|
|
#if defined TORRENT_WINDOWS || defined TORRENT_CYGWIN
|
|
// asio assumes that the windows error codes are defined already
|
|
#include <winsock2.h>
|
|
#endif
|
|
|
|
#include <boost/asio/ip/tcp.hpp>
|
|
#include <boost/asio/ip/udp.hpp>
|
|
#include <boost/asio/write.hpp>
|
|
#include <boost/asio/read.hpp>
|
|
|
|
#ifdef __OBJC__
|
|
#undef Protocol
|
|
#endif
|
|
|
|
#if defined TORRENT_BUILD_SIMULATOR
|
|
#include "simulator/simulator.hpp"
|
|
#endif
|
|
|
|
#if TORRENT_USE_NETLINK
|
|
#include <linux/netlink.h>
|
|
#ifndef SOL_NETLINK
|
|
#define SOL_NETLINK 270
|
|
#endif
|
|
|
|
// NETLINK_NO_ENOBUFS exists at least since android 2.3, but is not exposed
|
|
#if defined TORRENT_ANDROID && !defined NETLINK_NO_ENOBUFS
|
|
#define NETLINK_NO_ENOBUFS 5
|
|
#endif
|
|
#endif
|
|
|
|
#include "libtorrent/aux_/disable_warnings_pop.hpp"
|
|
|
|
namespace libtorrent {
|
|
|
|
#if defined TORRENT_BUILD_SIMULATOR
|
|
using udp = sim::asio::ip::udp;
|
|
using tcp = sim::asio::ip::tcp;
|
|
using sim::asio::async_write;
|
|
using sim::asio::async_read;
|
|
using null_buffers = sim::asio::null_buffers;
|
|
#else
|
|
using tcp = boost::asio::ip::tcp;
|
|
using udp = boost::asio::ip::udp;
|
|
using boost::asio::async_write;
|
|
using boost::asio::async_read;
|
|
using null_buffers = boost::asio::null_buffers;
|
|
#endif
|
|
|
|
#ifdef TORRENT_WINDOWS
|
|
|
|
#ifndef PROTECTION_LEVEL_UNRESTRICTED
|
|
#define PROTECTION_LEVEL_UNRESTRICTED 10
|
|
#endif
|
|
|
|
#ifndef IPV6_PROTECTION_LEVEL
|
|
#define IPV6_PROTECTION_LEVEL 30
|
|
#endif
|
|
|
|
struct v6_protection_level
|
|
{
|
|
explicit v6_protection_level(int level): m_value(level) {}
|
|
template<class Protocol>
|
|
int level(Protocol const&) const { return IPPROTO_IPV6; }
|
|
template<class Protocol>
|
|
int name(Protocol const&) const { return IPV6_PROTECTION_LEVEL; }
|
|
template<class Protocol>
|
|
int const* data(Protocol const&) const { return &m_value; }
|
|
template<class Protocol>
|
|
size_t size(Protocol const&) const { return sizeof(m_value); }
|
|
int m_value;
|
|
};
|
|
|
|
struct exclusive_address_use
|
|
{
|
|
explicit exclusive_address_use(int enable): m_value(enable) {}
|
|
template<class Protocol>
|
|
int level(Protocol const&) const { return SOL_SOCKET; }
|
|
template<class Protocol>
|
|
int name(Protocol const&) const { return SO_EXCLUSIVEADDRUSE; }
|
|
template<class Protocol>
|
|
int const* data(Protocol const&) const { return &m_value; }
|
|
template<class Protocol>
|
|
size_t size(Protocol const&) const { return sizeof(m_value); }
|
|
int m_value;
|
|
};
|
|
#endif // TORRENT_WINDOWS
|
|
|
|
#ifdef IPV6_TCLASS
|
|
struct traffic_class
|
|
{
|
|
explicit traffic_class(char val): m_value(val) {}
|
|
template<class Protocol>
|
|
int level(Protocol const&) const { return IPPROTO_IPV6; }
|
|
template<class Protocol>
|
|
int name(Protocol const&) const { return IPV6_TCLASS; }
|
|
template<class Protocol>
|
|
int const* data(Protocol const&) const { return &m_value; }
|
|
template<class Protocol>
|
|
size_t size(Protocol const&) const { return sizeof(m_value); }
|
|
int m_value;
|
|
};
|
|
#endif
|
|
|
|
struct type_of_service
|
|
{
|
|
#ifdef _WIN32
|
|
using tos_t = DWORD;
|
|
#else
|
|
using tos_t = int;
|
|
#endif
|
|
explicit type_of_service(char val) : m_value(tos_t(val)) {}
|
|
template<class Protocol>
|
|
int level(Protocol const&) const { return IPPROTO_IP; }
|
|
template<class Protocol>
|
|
int name(Protocol const&) const { return IP_TOS; }
|
|
template<class Protocol>
|
|
tos_t const* data(Protocol const&) const { return &m_value; }
|
|
template<class Protocol>
|
|
size_t size(Protocol const&) const { return sizeof(m_value); }
|
|
tos_t m_value;
|
|
};
|
|
|
|
#if defined IP_DONTFRAG || defined IP_MTU_DISCOVER || defined IP_DONTFRAGMENT
|
|
#define TORRENT_HAS_DONT_FRAGMENT
|
|
#endif
|
|
|
|
#ifdef TORRENT_HAS_DONT_FRAGMENT
|
|
|
|
// the order of these preprocessor tests matters. Windows defines both
|
|
// IP_DONTFRAGMENT and IP_MTU_DISCOVER, but the latter is not supported
|
|
// in general, the simple option of just setting the DF bit is preferred, if
|
|
// it's available
|
|
#if defined IP_DONTFRAG || defined IP_DONTFRAGMENT
|
|
|
|
struct dont_fragment
|
|
{
|
|
explicit dont_fragment(bool val) : m_value(val) {}
|
|
template<class Protocol>
|
|
int level(Protocol const&) const { return IPPROTO_IP; }
|
|
template<class Protocol>
|
|
int name(Protocol const&) const
|
|
#if defined IP_DONTFRAG
|
|
{ return IP_DONTFRAG; }
|
|
#else // defined IP_DONTFRAGMENT
|
|
{ return IP_DONTFRAGMENT; }
|
|
#endif
|
|
template<class Protocol>
|
|
int const* data(Protocol const&) const { return &m_value; }
|
|
template<class Protocol>
|
|
size_t size(Protocol const&) const { return sizeof(m_value); }
|
|
int m_value;
|
|
};
|
|
|
|
#else
|
|
|
|
// this is the fallback mechanism using the IP_MTU_DISCOVER option, which
|
|
// does a little bit more than we want, it makes the kernel track an estimate
|
|
// of the MTU and rejects packets immediately if they are believed to exceed
|
|
// it.
|
|
struct dont_fragment
|
|
{
|
|
explicit dont_fragment(bool val)
|
|
: m_value(val ? IP_PMTUDISC_DO : IP_PMTUDISC_DONT) {}
|
|
template<class Protocol>
|
|
int level(Protocol const&) const { return IPPROTO_IP; }
|
|
template<class Protocol>
|
|
int name(Protocol const&) const { return IP_MTU_DISCOVER; }
|
|
template<class Protocol>
|
|
int const* data(Protocol const&) const { return &m_value; }
|
|
template<class Protocol>
|
|
size_t size(Protocol const&) const { return sizeof(m_value); }
|
|
int m_value;
|
|
};
|
|
|
|
#endif // IP_DONTFRAG vs. IP_MTU_DISCOVER
|
|
|
|
#endif // TORRENT_HAS_DONT_FRAGMENT
|
|
|
|
#if TORRENT_USE_NETLINK
|
|
struct no_enobufs
|
|
{
|
|
explicit no_enobufs(bool val) : m_value(val) {}
|
|
template<class Protocol>
|
|
int level(Protocol const&) const { return SOL_NETLINK; }
|
|
template<class Protocol>
|
|
int name(Protocol const&) const { return NETLINK_NO_ENOBUFS; }
|
|
template<class Protocol>
|
|
int const* data(Protocol const&) const { return &m_value; }
|
|
template<class Protocol>
|
|
std::size_t size(Protocol const&) const { return sizeof(m_value); }
|
|
int m_value;
|
|
};
|
|
#endif // TORRENT_USE_NETLINK
|
|
}
|
|
|
|
#endif // TORRENT_SOCKET_HPP_INCLUDED
|