# Class: WebSocket > ⚠️ Warning: the WebSocket API is experimental and has known bugs. Extends: [`EventTarget`](https://developer.mozilla.org/en-US/docs/Web/API/EventTarget) The WebSocket object provides a way to manage a WebSocket connection to a server, allowing bidirectional communication. The API follows the [WebSocket spec](https://developer.mozilla.org/en-US/docs/Web/API/WebSocket). ## `new WebSocket(url[, protocol])` Arguments: * **url** `URL | string` - The url's protocol *must* be `ws` or `wss`. * **protocol** `string | string[]` (optional) - Subprotocol(s) to request the server use. ## Read More - [MDN - WebSocket](https://developer.mozilla.org/en-US/docs/Web/API/WebSocket) - [The WebSocket Specification](https://www.rfc-editor.org/rfc/rfc6455) - [The WHATWG WebSocket Specification](https://websockets.spec.whatwg.org/)
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