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cd6720a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | //#region src/utils/resolveWebSocketUrl.ts
/**
* Resolve potentially relative WebSocket URLs the same way
* the browser does (replace the protocol, use the origin, etc).
*
* @see https://websockets.spec.whatwg.org//#dom-websocket-websocket
*/
function resolveWebSocketUrl(url) {
if (typeof url === "string") return resolveWebSocketUrl(new URL(url, typeof location !== "undefined" ? location.href : void 0));
if (url.protocol === "http:") url.protocol = "ws:";
else if (url.protocol === "https:") url.protocol = "wss:";
if (url.protocol !== "ws:" && url.protocol !== "wss:")
/**
* @note These errors are modeled after the browser errors.
* The exact error messages aren't provided in the specification.
* Node.js uses more obscure error messages that I don't wish to replicate.
*/
throw new SyntaxError(`Failed to construct 'WebSocket': The URL's scheme must be either 'http', 'https', 'ws', or 'wss'. '${url.protocol}' is not allowed.`);
if (url.hash !== "") throw new SyntaxError(`Failed to construct 'WebSocket': The URL contains a fragment identifier ('${url.hash}'). Fragment identifiers are not allowed in WebSocket URLs.`);
return url.href;
}
//#endregion
export { resolveWebSocketUrl as t };
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