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.
"My grandson is devastated," he said, "but we've resigned ourselves to the fact that we've got to go".
。关于这个话题，爱思助手下载最新版本提供了深入分析
2.9 SiLU（Swish）
I’ll admit, having seen a prototype Pro Charger in person back in January, that it’s the prettiest way to re-juice a smart ring I’ve ever seen. Whereas Samsung and Oura have both opted for discreet, ring box-style hardware, Ultrahuman made something designed to sit on your nightstand. It’s not taking up space just for show, either, since it includes the aforementioned battery, LED charge indicator, speaker and haptics. It’s also got the ability to diagnose and address firmware issues to eliminate worries around firmware issues bricking devices.