Re: [Boost-users] Example HTTP Server 3, Requests are processed one by one on Win32?

Subject: Re: [Boost-users] Example HTTP Server 3, Requests are processed one by one on Win32?
From: Sven (mail_at_[hidden])
Date: 2011-09-07 10:56:56

> > To get into the threading stuff, I did add some output to the
> > std::cout in the request_handler part at the top of the method
> “handle_request“ following by a sleep(5000).
> >
> > After this I compile (without errors/warnings) and run the program
> > providing Ip/Port, docroot and threadpool size 20.
> > When I start a request to it with my browser, as expected I get the
> > output on the console.
> > But when I start some requests concurrent, the requests seems
> > processed one by one (not concurrent as expected). I don’t know, but I
> > expect, that the Requests would be processed concurrent (1 Request = 1
> > Thread?)
> 
> 
> As far as I see, request_handler is called from handle_read, and the latter
> handler is wrapped with strand -- especially to prevent such a
> concurrecy:
> http://www.boost.org/doc/libs/1_47_0/doc/html/boost_asio/reference/io_
> service__strand.html

Ahh I see - I currently do not understand the sense of this. It's a HTTP Server, why
should it not process requests concurrently? Any ideas?