The primary signal is desiredSize on the controller. It can be positive (wants data), zero (at capacity), negative (over capacity), or null (closed). Producers are supposed to check this value and stop enqueueing when it's not positive. But there's nothing enforcing this: controller.enqueue() always succeeds, even when desiredSize is deeply negative.
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，这一点在同城约会中也有详细论述
Фото: Владимир Астапкович / РИА Новости
대법원, 내달 12~13일 전국 법원장 간담회 개최…‘사법 3법’ 논의 전망
Москвичей предупредили о резком похолодании09:45