Re: [Boost-users] Problem finally found!

6 Jan 2013

      Hi Juan,

I wasn't asked, but it looks like some kind of MS Visio. Visio is fine for small
diagrams, but it's a nightmare for bigger ones because of the over-smart
connection arrows... For bigger things I'm using EnterpriseArchitect.

Cheers,

Ingo

"Juan Ramírez"  hat am 6. Januar 2013 um 03:55
geschrieben:
...
It's fine to call start_accept() inside the handle_accept() function, if you
don't do it your server will not be able to accept another client
You should check if the ioservice has enough threads to handle more than one
client, maybe you have a single thread being blocked by the call to
 session->start(), if this is the case, your server cannot accept another
client until the thread is released (make sure the ioservice has an
oioservice::work object attached, btw).
__________
 Saludos!
      Juan
On Fri, Jan 4, 2013 at 2:30 PM, Gonzalo Garramuno mailto:ggarra13@gmail.com > wrote:
...
...
My problem was that acceptor_ was called twice and two sessions were
created.  The first session was used properly while the second session
missed the socket setup.
class server
   {
   public:
     server(boost::asio::io_ service& io_service,
        const tcp::endpoint& listen_endpoint,
        mrv::ViewerUI* v)
       : io_service_(io_service),
         acceptor_(io_service, listen_endpoint),
         ui_( v )
     {
        start_accept();
     }
void start_accept()
     {
        tcp_session_ptr new_session(
                    boost::make_shared(
                                    boost::ref(
                                           io_service_
                                           ),
                                    boost::ref(ui_)
                                    )
                    );
std::cerr << "******** TCP SESSION " << new_session << std::endl;
acceptor_.async_accept(new_ session->socket(),
                  boost::bind(&server::handle_ accept, this,
                          new_session, _1));
     }
void handle_accept(tcp_session_ptr session,
                const boost::system::error_code& ec)
     {
       if (!ec)
       {
         session->start();
       }
       start_accept(); // BAD
     }
Changed to:
void handle_accept(tcp_session_ptr session,
                const boost::system::error_code& ec)
     {
       if (!ec)
       {
         session->start();
       }
       else
       {
         start_accept();
       }
     }
I still don't know why this is so and the problem is not fully resolved,
as only the server change in the timeline works only once, but at least the
server now works.
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Re: [Boost-users] Problem finally found!

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