[英]Boost Asio tcp::acceptor access violation exception
I'm trying to create a tcp::acceptor
and a libtorrent::session
side by side, but I get an access violation exception when waiting for input from std::cin
. 我正在尝试并排创建一个tcp::acceptor
和一个libtorrent::session
,但是在等待std::cin
输入时我遇到了访问冲突异常。 The access violation occurs in the Boost IOCP implementation as shown by the stack trace. 访问冲突发生在Boost IOCP实现中,如堆栈跟踪所示。
A minimal example which lets me reproduce the issue, 一个让我重现问题的最小例子,
#include <boost/asio.hpp>
#include <libtorrent/session.hpp>
int main(int argc, char *argv[])
{
boost::asio::io_service io_service;
boost::asio::ip::tcp::acceptor acceptor(io_service);
libtorrent::session s;
std::string line;
std::getline(std::cin, line); // <----- trigger
return 0;
}
The stack trace is 堆栈跟踪是
lt_test.exe!boost::asio::detail::win_iocp_socket_service_base::do_open(boost::asio::detail::win_iocp_socket_service_base::base_implementation_type & impl, int family, int type, int protocol, boost::system::error_code & ec) Line 300 C++
lt_test.exe!boost::asio::detail::win_iocp_socket_service<boost::asio::ip::tcp>::open(boost::asio::detail::win_iocp_socket_service<boost::asio::ip::tcp>::implementation_type & impl, const boost::asio::ip::tcp & protocol, boost::system::error_code & ec) Line 192 C++
lt_test.exe!boost::asio::socket_acceptor_service<boost::asio::ip::tcp>::open(boost::asio::detail::win_iocp_socket_service<boost::asio::ip::tcp>::implementation_type & impl, const boost::asio::ip::tcp & protocol, boost::system::error_code & ec) Line 144 C++
lt_test.exe!boost::asio::basic_socket_acceptor<boost::asio::ip::tcp,boost::asio::socket_acceptor_service<boost::asio::ip::tcp> >::open(const boost::asio::ip::tcp & protocol, boost::system::error_code & ec) Line 310 C++
lt_test.exe!libtorrent::aux::session_impl::setup_listener(libtorrent::listen_socket_t * s, boost::asio::ip::basic_endpoint<boost::asio::ip::tcp> ep, int & retries, bool v6_only, int flags, boost::system::error_code & ec) Line 2089 C++
lt_test.exe!libtorrent::aux::session_impl::open_listen_port(int flags, boost::system::error_code & ec) Line 2243 C++
lt_test.exe!libtorrent::aux::session_impl::init() Line 1258 C++
lt_test.exe!libtorrent::aux::session_impl::main_thread() Line 4880 C++
lt_test.exe!boost::_mfi::mf0<void,libtorrent::aux::session_impl>::operator()(libtorrent::aux::session_impl * p) Line 50 C++
lt_test.exe!boost::_bi::list1<boost::_bi::value<libtorrent::aux::session_impl *> >::operator()<boost::_mfi::mf0<void,libtorrent::aux::session_impl>,boost::_bi::list0>(boost::_bi::type<void> __formal, boost::_mfi::mf0<void,libtorrent::aux::session_impl> & f, boost::_bi::list0 & a, int __formal) Line 254 C++
lt_test.exe!boost::_bi::bind_t<void,boost::_mfi::mf0<void,libtorrent::aux::session_impl>,boost::_bi::list1<boost::_bi::value<libtorrent::aux::session_impl *> > >::operator()() Line 21 C++
lt_test.exe!boost::asio::detail::win_thread::func<boost::_bi::bind_t<void,boost::_mfi::mf0<void,libtorrent::aux::session_impl>,boost::_bi::list1<boost::_bi::value<libtorrent::aux::session_impl *> > > >::run() Line 117 C++
lt_test.exe!boost::asio::detail::win_thread_function(void * arg) Line 118 C++
[External Code]
[Frames below may be incorrect and/or missing, no symbols loaded for kernel32.dll]
Removing the acceptor
makes the access violation exception disappear. 删除acceptor
会使访问冲突异常消失。
What causes this? 是什么导致这个?
I have run into the same issue, I had nothing wrong in my code, indeed using another constructor of acceptor worker fine, this was crashing to me: 我遇到了同样的问题,我的代码中没有任何错误,确实使用了另一个接受器工作者的构造函数,这对我来说是崩溃的:
this->acceptor = boost::make_shared<boost::asio::ip::tcp::acceptor>(io_service_, endpoint);
whereas this was not 而事实并非如此
this->acceptor = boost::make_shared<boost::asio::ip::tcp::acceptor>(io_service_, endpoint.protocol());
notice the protocol() call, I am using another constructor, surprisingly this worked ... 注意protocol()调用,我正在使用另一个构造函数,令人惊讶的是这个工作...
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