The connection should emit a WindowUpdated event on INITIAL_WINDOW_SIZE change

I think the connection should emit a WindowUpdated event on receipt of a settings frame that changes the INITIAL_WINDOW_SIZE. This is because this frame is valid after the receipt of headers and hence it implicitly updates the window (see _flow_control_change_from_settings). Without emitting this frame implementations have to specifically look for this settings change and respond appropriately themselves.

(I'll implement this, just wanted to get views on whether this is the correct thing to do).

Issue が関連するフロー制御パスとして特定している _flow_control_change_from_settings の h2/connection.py から始めてください。変更を加える前に、現在 settings-frame の処理がどのように connection events を公開しているかを追跡し、周辺の動作を確認してください。INITIAL_WINDOW_SIZE を変更すると WindowUpdated event が発生し、他の settings については既存の動作が維持されれば完了です。