web-feature: WebSockets

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The WebSocket API opens a two-way communication channel between the user’s browser and a server.

WKWebView

macOS

*

iOS

*

Android WebView

Android

*

WebView2

Windows

*

WPE MiniBrowser

Linux

2026-06

Servo

Android

2026-06

Chrome Browser

Android

18

Safari Browser

iOS

4.2