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const getCurrentScriptSource = require('./getCurrentScriptSource.js');
/**
* @typedef {Object} SocketUrlParts
* @property {string} [auth]
* @property {string} hostname
* @property {string} [protocol]
* @property {string} pathname
* @property {string} [port]
*/
/**
* Parse current location and Webpack's `__resourceQuery` into parts that can create a valid socket URL.
* @param {string} [resourceQuery] The Webpack `__resourceQuery` string.
* @param {import('./getWDSMetadata').WDSMetaObj} [metadata] The parsed WDS metadata object.
* @returns {SocketUrlParts} The parsed URL parts.
* @see https://webpack.js.org/api/module-variables/#__resourcequery-webpack-specific
*/
function getSocketUrlParts(resourceQuery, metadata) {
if (typeof metadata === 'undefined') {
metadata = {};
}
/** @type {SocketUrlParts} */
let urlParts = {};
// If the resource query is available,
// parse it and ignore everything we received from the script host.
if (resourceQuery) {
const parsedQuery = {};
const searchParams = new URLSearchParams(resourceQuery.slice(1));
searchParams.forEach(function (value, key) {
parsedQuery[key] = value;
});
urlParts.hostname = parsedQuery.sockHost;
urlParts.pathname = parsedQuery.sockPath;
urlParts.port = parsedQuery.sockPort;
// Make sure the protocol from resource query has a trailing colon
if (parsedQuery.sockProtocol) {
urlParts.protocol = parsedQuery.sockProtocol + ':';
}
} else {
const scriptSource = getCurrentScriptSource();
let url = {};
try {
// The placeholder `baseURL` with `window.location.href`,
// is to allow parsing of path-relative or protocol-relative URLs,
// and will have no effect if `scriptSource` is a fully valid URL.
url = new URL(scriptSource, window.location.href);
} catch (e) {
// URL parsing failed, do nothing.
// We will still proceed to see if we can recover using `resourceQuery`
}
// Parse authentication credentials in case we need them
if (url.username) {
// Since HTTP basic authentication does not allow empty username,
// we only include password if the username is not empty.
// Result: <username> or <username>:<password>
urlParts.auth = url.username;
if (url.password) {
urlParts.auth += ':' + url.password;
}
}
// `file://` URLs has `'null'` origin
if (url.origin !== 'null') {
urlParts.hostname = url.hostname;
}
urlParts.protocol = url.protocol;
urlParts.port = url.port;
}
if (!urlParts.pathname) {
if (metadata.version === 4) {
// This is hard-coded in WDS v4
urlParts.pathname = '/ws';
} else {
// This is hard-coded in WDS v3
urlParts.pathname = '/sockjs-node';
}
}
// Check for IPv4 and IPv6 host addresses that correspond to any/empty.
// This is important because `hostname` can be empty for some hosts,
// such as 'about:blank' or 'file://' URLs.
const isEmptyHostname =
urlParts.hostname === '0.0.0.0' || urlParts.hostname === '[::]' || !urlParts.hostname;
// We only re-assign the hostname if it is empty,
// and if we are using HTTP/HTTPS protocols.
if (
isEmptyHostname &&
window.location.hostname &&
window.location.protocol.indexOf('http') === 0
) {
urlParts.hostname = window.location.hostname;
}
// We only re-assign `protocol` when `protocol` is unavailable,
// or if `hostname` is available and is empty,
// since otherwise we risk creating an invalid URL.
// We also do this when 'https' is used as it mandates the use of secure sockets.
if (
!urlParts.protocol ||
(urlParts.hostname && (isEmptyHostname || window.location.protocol === 'https:'))
) {
urlParts.protocol = window.location.protocol;
}
// We only re-assign port when it is not available
if (!urlParts.port) {
urlParts.port = window.location.port;
}
if (!urlParts.hostname || !urlParts.pathname) {
throw new Error(
[
'[React Refresh] Failed to get an URL for the socket connection.',
"This usually means that the current executed script doesn't have a `src` attribute set.",
'You should either specify the socket path parameters under the `devServer` key in your Webpack config, or use the `overlay` option.',
'https://github.com/pmmmwh/react-refresh-webpack-plugin/blob/main/docs/API.md#overlay',
].join('\n')
);
}
return {
auth: urlParts.auth,
hostname: urlParts.hostname,
pathname: urlParts.pathname,
protocol: urlParts.protocol,
port: urlParts.port || undefined,
};
}
module.exports = getSocketUrlParts;