Send a request message of the given type
        
        Args:
            - message: the message to publish
            - message_type: the type of message being sent

def request(self,message,message_type):
        """
        Send a request message of the given type
        
        Args:
            - message: the message to publish
            - message_type: the type of message being sent
        """
        if message_type == MULTIPART:
            raise Exception("Unsupported request type")
            
        super(Requestor,self).send(message,message_type)