25 lines
1.2 KiB
JavaScript
25 lines
1.2 KiB
JavaScript
//#region src/utils/resolveWebSocketUrl.ts
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/**
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* Resolve potentially relative WebSocket URLs the same way
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* the browser does (replace the protocol, use the origin, etc).
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*
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* @see https://websockets.spec.whatwg.org//#dom-websocket-websocket
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*/
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function resolveWebSocketUrl(url) {
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if (typeof url === "string") return resolveWebSocketUrl(new URL(url, typeof location !== "undefined" ? location.href : void 0));
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if (url.protocol === "http:") url.protocol = "ws:";
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else if (url.protocol === "https:") url.protocol = "wss:";
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if (url.protocol !== "ws:" && url.protocol !== "wss:")
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/**
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* @note These errors are modeled after the browser errors.
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* The exact error messages aren't provided in the specification.
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* Node.js uses more obscure error messages that I don't wish to replicate.
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*/
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throw new SyntaxError(`Failed to construct 'WebSocket': The URL's scheme must be either 'http', 'https', 'ws', or 'wss'. '${url.protocol}' is not allowed.`);
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if (url.hash !== "") throw new SyntaxError(`Failed to construct 'WebSocket': The URL contains a fragment identifier ('${url.hash}'). Fragment identifiers are not allowed in WebSocket URLs.`);
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return url.href;
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}
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//#endregion
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export { resolveWebSocketUrl as t };
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//# sourceMappingURL=resolveWebSocketUrl-C83-x9iE.mjs.map
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