Re: [Boost-users] [asio] how to specify a timeout?

From: Andrea Bartoli (bartols2000_at_[hidden])
Date: 2007-12-05 04:05:12

Yes, timeout and read event have two different callback, in read callback you have to m_timer->cancel() to avoid receive timeout also.

----- Messaggio originale -----
Da: Arkadiy Vertleyb <vertleyb_at_[hidden]>
A: boost-users_at_[hidden]
Inviato: Martedì 4 dicembre 2007, 16:14:40
Oggetto: Re: [Boost-users] [asio] how to specify a timeout?

Hello Andrea,

"Andrea Bartoli" <bartols2000_at_[hidden]> wrote
> Use an asio::deadline_timer
>
> Example:
>
>        asio::io_service m_ioService;
>        asio::deadline_timer * m_timer;
>        m_timer = new asio::deadline_timer(m_ioService);
>
>        m_timer->expires_from_now( boost::posix_time::seconds(t) );
>        m_timer->async_wait( boost::bind(&Foo:handle_timeout, this, 
> asio::placeholders::error) );
>        asio::async_read( *m_socket,
>                                  asio::buffer( m_msg.header(), 
> m_msg.header_length() ),
>                                
  boost::bind(&Foo::handle_read_header, 
> this, asio::placeholders::error) );

Thanks for your response.  Still, it's not clear to me how to use it.
  In 
your example it seems that read operation and timeout are two
 independent 
things.  How do I make sure only one of these two fires?  Is it possile
 to 
cancel read operation once timout has been recieved?

Thanks,
Arkadiy 


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