From: Lloyd Zusman <ljz@...>
Date: 2005-02-23T08:02:39+09:00
Subject: Re: WEBrick: Virtual hosts and inherited directory mappings

GOTOU Yuuzou <gotoyuzo@notwork.org> writes:

> In message <m3ekf9qzmp.fsf@asfast.com>,
>  `Lloyd Zusman <ljz@asfast.com>' wrote:
>> I posted the following query to the webrick mailing list, but that
>> list has not been very active lately, and so I'm also posting it
>> here, in the hopes of reaching more WEBrick users:
>
> I'm really sorry to post this too late.

There is no apology necessary.  I posted here a short time after I
posted to the WEBrick mailing list, and I did so solely because there
seem to be just a few posters on that list.  My only intention was to
reach the maximum number of people with my query.

I'm sorry if my comment sounded like a complaint, because that was not
my intent.


> [ ... ]
>
> I considered your need is that all 404 requests to virtual
> hosts should be reprocessed by mainserver. I hope the
> following code helps you.

Yes, it does.  Thank you!  This will definitely do what I want.

By looking at this, I see what seems to be a key aspect of WEBrick that
I previously did not understand.  It seems to be the case that in order
to invoke the functionality of one service/servlet from another, all we
have to do is call the #service method of the second service/servlet
from that of the first one.  Correct?

If this indeed is the case, I now see how I can do a lot more with
WEBrick.

I very much appreciate your reply and your very useful help with this
excellent piece of software.


> require "webrick"
>
> class FallbackEnabledHTTPServer < WEBrick::HTTPServer
>   def service(req, res)
>     begin
>       super(req, res)
>     rescue WEBrick::HTTPStatus::NotFound => ex
>       # resume request's attributes and invoke the fallback server.
>       req.script_name = ""
>       req.path_info = req.path.dup
>       @config[:FallbackServer].service(req, res)
>     end
>   end
> end
>
> httpd = WEBrick::HTTPServer.new(
>   :Port         => 8080,
>   :ServerName   => "mainserver.com",
>   :DocumentRoot => "./var/www"
> )
> httpd.virtual_host(
>   FallbackEnabledHTTPServer.new(
>     :Port           => 8080,
>     :ServerName     => "virthost1.com",
>     :DocumentRoot   => "./var/www/virthost1",
>     :FallbackServer => httpd,
>     :DoNotListen    => true
>   )
> )
> trap(:INT){ httpd.shutdown }
> httpd.start


-- 
 Lloyd Zusman
 ljz@asfast.com
 God bless you.