<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def requestTimingInfo(self):
 """ Returns the time needed to process the request by the frontend server in microseconds and the EPOC timestamp of the request in microseconds. :rtype: tuple containing processing time and timestamp """

        try:
            return tuple(item.split('=')[1] for item in self.http_response.header.get('CMS-Server-Time').split())
        except AttributeError:
            return None, None