have remote_gateway request use EM requests if available

lib/rocketamf/remote_gateway/request.rb

@@ -12,18 +12,16 @@ module RocketAMF
       def fetch
         uri = @service.gateway.uri
         data = envelope.serialize
-      
+        if EventMachine.reactor_running?
+          req = EM::HttpRequest.new(uri).post :body => data
+          response_body = req.response
+        else
           req = Net::HTTP::Post.new(uri.path)
           req.body = data
           res = Net::HTTP.new(uri.host, uri.port).start { |http| http.request(req) }
           case res
-        when Net::HTTPSuccess, Net::HTTPRedirection
-          result = RocketAMF::Envelope.new.populate_from_stream(res.body)
-          first_message_data = result.messages[0].data
-          if first_message_data.respond_to?(:[]) && first_message_data[:code] == ERROR_CODE
-            raise AMFError.new(first_message_data)
-          end
-          return result
+          when Net::HTTPSuccess
+            response_body = res.body
           else
             error = nil
             begin
@@ -34,6 +32,17 @@ module RocketAMF
             raise ConnectionError, "Error connecting to gateway: #{error}"
           end
         end
+        begin
+          result = RocketAMF::Envelope.new.populate_from_stream(response_body)
+        rescue Exception => e
+          raise ConnectionError, "Error parsing gateway response: #{e.message}"
+        end
+        first_message_data = result.messages[0].data
+        if first_message_data.respond_to?(:[]) && first_message_data[:code] == ERROR_CODE
+          raise AMFError.new(first_message_data)
+        end
+        result
+      end
       
       private