Subject: Re: [Boost-users] [asio] sync receive_from with timeout
From: Michael Dehmlow (dehmlowm_at_[hidden])
Date: 2009-05-08 14:19:23
Perhaps... that was a bit over simplified as follows is better:
while(!timeout.elapsed())
{
boost::system::error_code ec;
boost::asio::socket_base::non_blocking_io command(true);
socket.io_control(command);
bytesRead = _socket->read_some(boost::asio::buffer(data,
dataBufferSize), ec);
if(error&&boost::asio::error::would_block!=error)
{
//there is some other error the client has disconnected;
}
else if bytes read>0)
{
//I have some data
_myDataDelegate.processData(data,bytesRead);
}
else
{
//No data for now lets take a break
boost::this_thread::sleep(
boost::posix_time::milliseconds(_myReadInterval));
}
}
Stephan Menzel-3 wrote:
>
> Hi Michael,
>
>> while(!timeout.elapsed())
>> {
>> boost::system::error_code ec;
>> boost::asio::socket_base::non_blocking_io command(true);
>> socket.io_control(command);
>> bytesRead = _socket->read_some(boost::asio::buffer(data,
>> dataBufferSize), ec);
>>
>> if(error&&boost::asio::error::would_block!=error)
>> {
>> //there is some other error the client has
>> disconnected;
>> }
>> else
>> {
>> //I must have got some data or theres no data yet check
>> bytesRead for that
>> }
>> boost::this_thread::sleep(
>> boost::posix_time::milliseconds(100));
>> }
>> No extra threads necessary.
>
> Indeed. But the way I see it, you gotta be aware that each of you reads
> will take at least 100 mils, right? In my scenario this is not really
> affordable.
>
> Or am I missing something here? The first read will never have something
> ready in a reliable way, right? Nice try though...
>
> Stephan
>
> _______________________________________________
> Boost-users mailing list
> Boost-users_at_[hidden]
> http://listarchives.boost.org/mailman/listinfo.cgi/boost-users
>
>
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