57f44d6d88
We need to, following the RFC, send a Dynamic Table Size Update using HPack once we have acknowledged the setting as long as the new size is smaller, or if we decide to use the new, larger size. It's further complicated by the fact that we need to send this update on the next 'field block' (anything with headers in it), and we may have multiple SETTING frames come in, and we need to then acknowledge the _smallest_ one as well as the _final_ one. This is so the decoder on the peer's side can know that we have set the smallest size, and trimmed our tables thusly, before going to the larger size. This could, for example, be used to clear the table. Task-number: QTBUG-132277 Pick-to: 6.9 6.8 Change-Id: I2b886e125f2c197bc3d42aa0b2bbd308ed2a687c Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>