[Boost-bugs] [Boost C++ Libraries] #5285: problem about boost::asio::ip::tcp::resolver

Subject: [Boost-bugs] [Boost C++ Libraries] #5285: problem about boost::asio::ip::tcp::resolver
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-03-09 08:03:33

#5285: problem about boost::asio::ip::tcp::resolver
--------------------------------------------------+-------------------------
 Reporter:  gong yiling <gongyiling3468@…>        |       Owner:  chris_kohlhoff
     Type:  Bugs                                  |      Status:  new           
Milestone:  To Be Determined                      |   Component:  asio          
  Version:  Boost 1.45.0                          |    Severity:  Problem       
 Keywords:                                        |  
--------------------------------------------------+-------------------------
 one day i found a bug in my project, that's one of async_resolve's
 callback never called. i checked this problem and repeat this problem as
 following program:

 {{{

 #include "stdafx.h"
 #include <boost/asio.hpp>
 #include <boost/bind.hpp>
 #include <boost/system/error_code.hpp>
 #include <stdio.h>
 using namespace boost::asio;
 using namespace boost;
 class client
 {
 public:
         client(io_service& ios):
         m_ios(ios),
         m_resolver(ios)
         {
                 ip::tcp::resolver* resolver = new
 ip::tcp::resolver(m_ios);
                 delete resolver;
                 ip::tcp::resolver::query query("www.baidu.com","80");
 m_resolver.async_resolve(query,boost::bind(&client::handle_resolve,this,_1,_2));
         }
         void handle_resolve(const system::error_code&
 ec,ip::tcp::resolver_iterator it)
         {
                 puts("see me?");
         }
         io_service& m_ios;
         ip::tcp::resolver m_resolver;
 };

 int _tmain(int argc, _TCHAR* argv[])
 {
         io_service ios;
         client* c = new client(ios);
         ios.run();
         return 0;
 }
 }}}
 i digged into the source code( in function
 boost.asio.detail.resolver_service.destroy ) it seems when i delete a
 temporary created resolver, the resolver's work service will be stopped.
 and thus client::handle_resolve will never be called.
                                                                  thx

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/5285>
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