On Fri, Jan 25, 2013 at 4:42 AM, huvcbo wrote:

Hi all,

I have problem with HTTP Server3 example, in connection::handle_write i have a dedline_timer with a async_wait. but before the handle_timed execute the connection_ptr goes out of scope, why?

Appriciate any help.

Christer

The boost HTTP Server 3 in file connection.cpp in server.hpp boost::shared_ptr<connection> connection_ptr; server.cpp void server::handle_accept(const boost::system::error_code& e) { if (!e) { new_connection_->start(); new_connection_.reset(new connection(io_service_)); acceptor_.async_accept(new_**connection_->socket(), boost::bind(&server::handle_**accept, this, boost::asio::placeholders::**error)); } }

in connection.cpp

void connection::handle_write(const boost::system::error_code& e) { if (!e) { const boost::shared_ptrboost::asio:**:deadline_timer t(new boost::asio::deadline_timer(***io_service_, boost::posix_time::seconds(15)**)); } }

void connection::handle_timed( const boost::system::error_code& ec, const boost::shared_ptrboost::asio:**:deadline_timer t) { syslog(LOG_INFO, "handle_timed: %s", ec.message().c_str());

}

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Hi, I usually use timer as follows struct connection : enable_shared_from_this<connection> { // ... private: socket socket_; mutable_buffer buffer_; deadline_timer timer_; // According to your design, you may put timer and buffer in some other classes. e.g. session // I put the timer here for brevity. }; void connection::read(...) { timer_.expires_from_now(posix_time::seconds(5)); timer_.async_wait(bind(&connection::handle_timeout, shared_from_this(), _1)); // bind will increase ref cnt of this connection socket_.async_read_some(buffer_, bind(&connection::handle_read, _1, _2)); } void connection::handle_timeout(error_code const & err) { if(!err) { // timeout socket_.close(); // cause handle_read receive error_code 'Operation Canceled' } } Hope this helps. Best, Acer.