def get_authorization_header_value(self):
        auth_type = self.get_authorization_type()
        if request.headers.get("Authorization", None) != None:
            auth_line = request.headers.get("Authorization", None)
            if not auth_line.startswith("%s " % auth_type):
                raise self.get_invalid_header_response()
            return auth_line[len(auth_type) + 1:]
        else:
            return None
Get from the request the header of http basic auth:
dataset/ETHPy150Open biicode/bii-server/rest/bottle_plugins/authorization_header.py/AuthorizationHeaderBottlePlugin.get_authorization_header_value