Added server_args to AbstractApp (#1173)

* Added server_args to AbstractApp

* Added server_args to AbstractApp

* Added server_args to AbstractApp

 * server_args are then passed to Flask aio_https constructors
 * Updated documentation to reflect the change

Co-authored-by: Taha Lukmanji <taha.lukmanji@ericsson.com>

connexion/apps/abstract.py

@@ -10,7 +10,7 @@
 
 class AbstractApp(metaclass=abc.ABCMeta):
     def __init__(self, import_name, api_cls, port=None, specification_dir='',
-                 host=None, server=None, arguments=None, auth_all_paths=False, debug=None,
+                 host=None, server=None, server_args=None, arguments=None, auth_all_paths=False, debug=None,
                  resolver=None, options=None, skip_error_handlers=False):
         """
         :param import_name: the name of the application package
@@ -23,6 +23,8 @@ def __init__(self, import_name, api_cls, port=None, specification_dir='',
         :type specification_dir: pathlib.Path | str
         :param server: which wsgi server to use
         :type server: str | None
+        :param server_args: dictionary of arguments which are then passed to appropriate http server (Flask or aio_http)
+        :type server_args: dict | None
         :param arguments: arguments to replace on the specification
         :type arguments: dict | None
         :param auth_all_paths: whether to authenticate not defined paths
@@ -45,8 +47,9 @@ def __init__(self, import_name, api_cls, port=None, specification_dir='',
 
         self.options = ConnexionOptions(options)
 
-        self.app = self.create_app()
         self.server = server
+        self.server_args = dict() if server_args is None else server_args
+        self.app = self.create_app()
 
         # we get our application root path to avoid duplicating logic
         self.root_path = self.get_root_path()

connexion/apps/aiohttp_app.py

@@ -20,7 +20,7 @@ def __init__(self, import_name, only_one_api=False, **kwargs):
         self._api_added = False
 
     def create_app(self):
-        return web.Application()
+        return web.Application(**self.server_args)
 
     def get_root_path(self):
         mod = sys.modules.get(self.import_name)

connexion/apps/flask_app.py

@@ -21,7 +21,7 @@ def __init__(self, import_name, server='flask', **kwargs):
         super(FlaskApp, self).__init__(import_name, FlaskApi, server=server, **kwargs)
 
     def create_app(self):
-        app = flask.Flask(self.import_name)
+        app = flask.Flask(self.import_name, **self.server_args)
         app.json_encoder = FlaskJSONEncoder
         return app