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This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
Note: This feature is available in Web Workers.
The WebSocket.protocol read-only property returns the name of the sub-protocol the server selected; this will be one of the strings specified in the protocols parameter when creating the WebSocket object, or the empty string if no connection is established.
A string.
| WebSockets # ref-for-dom-websocket-protocol① |
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This page was last modified on Sep 25, 2024 by MDN contributors.
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