Ensure that DispatcherError is being thrown correctly when a malformed request is received.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5713 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionwebservice/CHANGELOG

 *SVN*
 
+* Ensure that DispatcherError is being thrown when a malformed request is received. [Kent Sibilev]
+
 * Added support for decimal types. Closes #6676. [Kent Sibilev]
 
 * Removed deprecated end_form_tag helper. [Kent Sibilev]

actionwebservice/lib/action_web_service/dispatcher/abstract.rb

@@ -3,6 +3,10 @@
 module ActionWebService # :nodoc:
   module Dispatcher # :nodoc:
     class DispatcherError < ActionWebService::ActionWebServiceError # :nodoc:
+      def initialize(*args)
+        super
+        set_backtrace(caller)
+      end
     end
 
     def self.included(base) # :nodoc:

actionwebservice/lib/action_web_service/protocol/xmlrpc_protocol.rb

@@ -45,6 +45,8 @@ def decode_action_pack_request(action_pack_request)
         def decode_request(raw_request, service_name)
           method_name, params = XMLRPC::Marshal.load_call(raw_request)
           Request.new(self, method_name, params, service_name)
+        rescue
+          return nil
         end
 
         def encode_request(method_name, params, param_types)