> map 'http://example1.com/' do
>   run MyApp::Example1
> end

> // Magnus Holm

> On Sat, Sep 22, 2012 at 11:58 AM, armanx <arm...@gmail.com> wrote:
> > Is it possible to detect the incoming request's domain name (host) in
> > config.ru? I'm trying to use URLMap to map different domains to
> different
> > apps, all running on the same IP. Theoretically, I'm trying to achieve
> this
> > effect:

> >> map 'http://example1.com' do
> >> run MyApp::Example1
> >> end

> >> map 'http://example2.com' do
> >> run MyApp::Example2
> >> end

> > For example, if it was possible to read rack's SERVER_NAME in config.ru,
> I
> > would do something like:

> >> if SERVER_NAME == 'example1.com'
> >> map '/' do
> >> run MyApp::Example1
> >> end
> >> end

> No, but this is what middleware are for:

> class ApplicationChooser
>   def initialize(apps)
>     @apps = apps
>   end

>   def call(env)
>     @apps.each do |proc, app|
>       return app.call(env) if proc.call(env)
>     end
> end

> run ApplicationChooser.new(
>   proc { |env| env["SERVER_NAME"] == "example.com" } => App1,
>   proc { |env| env["QUERY_STRING"] == "admin" } => App2,
>   proc { |env| true } => Default
> )

> // Magnus Holm

> On Sat, Sep 22, 2012 at 12:32 PM, Arman <arm...@gmail.com <javascript:>>
> wrote:
> > Thanks for the quick answer. This definitely works.

> > Our of curiosity, is it possible to see the host and other request
> > information in config.ru?

> > On Sep 22, 2012 3:04 AM, "Magnus Holm" <jud...@gmail.com <javascript:>>
> wrote:

> >> It's already supported, you just need the trailing slash:

> >> map 'http://example1.com/' do
> >>   run MyApp::Example1
> >> end

> >> // Magnus Holm

> >> On Sat, Sep 22, 2012 at 11:58 AM, armanx <arm...@gmail.com<javascript:>>
> wrote:
> >> > Is it possible to detect the incoming request's domain name (host) in
> >> > config.ru? I'm trying to use URLMap to map different domains to
> >> > different
> >> > apps, all running on the same IP. Theoretically, I'm trying to
> achieve
> >> > this
> >> > effect:

> >> >> map 'http://example1.com' do
> >> >> run MyApp::Example1
> >> >> end

> >> >> map 'http://example2.com' do
> >> >> run MyApp::Example2
> >> >> end

> >> > For example, if it was possible to read rack's SERVER_NAME in
> config.ru,
> >> > I
> >> > would do something like:

> >> >> if SERVER_NAME == 'example1.com'
> >> >> map '/' do
> >> >> run MyApp::Example1
> >> >> end
> >> >> end