WebTransportBidirectionalStream：writable 属性
Baseline
2026
*
Newly available
Since March 2026, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
* Some parts of this feature may have varying levels of support.
备注： 此特性在 Web Worker 中可用。
WebTransportBidirectionalStream 接口的只读属性 writable 返回一个可用于写入传出数据的 WebTransportSendStream 实例。