code: def _ekey(self, key):
          ''' Translate header field name to CGI/WSGI environ key. '''
          key = key.replace('-','_').upper()
          if key in self.cgikeys:
              return key
          return 'HTTP_' + kef _ekey(self, key):
          ''' Translate header field name to CGI/WSGI environ key. '''
          key = key.replace('-','_').upper()
          if key in self.cgikeys:
              return key
          return 'HTTP_' + key
docs: Translate header field name to CGI/WSGI environ key.