lib/rhoconnect/server.rb in rhoconnect-3.2.0.beta2 vs lib/rhoconnect/server.rb in rhoconnect-3.2.0.beta3

@@ -204,12 +204,36 @@
       return false if settings.respond_to?(:use_async_model) and settings.use_async_model == false
       return false if @dispatch_framework_initialized
       
       @dispatch_framework_initialized ||=true
       if RUBY_VERSION =~ /1.9/ and not defined?(JRUBY_VERSION)
-        require 'rhoconnect/async' 
-        register Rhoconnect::Synchrony
-        helpers Rhoconnect::AsyncHelpers
+        begin 
+          require 'rhoconnect/async' 
+          register Rhoconnect::Synchrony
+          helpers Rhoconnect::AsyncHelpers
+        rescue LoadError => e
+          # if it fails here - Async can not be used
+          settings.use_async_model = false
+          warning_for_async_gems = <<_INSTALL_ASYNC_GEMS
+          
+***** WARNING *****
+Rhoconnect has detected that Ruby 1.9.x is used and tried to initialize Async Framework, but failed:
+
+  #{e.inspect}
+
+Make sure to include the following dependencies into your application's Gemfile:
+
+platforms :ruby_19, :mingw_19 do
+  gem 'rack-fiber_pool'
+  gem 'async-rack'
+end
+
+After that, run 'bundle install' to install the necassary dependency gems.
+***** WARNING *****
+
+_INSTALL_ASYNC_GEMS
+          puts warning_for_async_gems
+        end
       else
         settings.use_async_model = false
       end
     end