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4 years ago
'use strict';
/* global self */
var url = require('url');
var getCurrentScriptSource = require('./getCurrentScriptSource');
function createSocketUrl(resourceQuery, currentLocation) {
var urlParts;
if (typeof resourceQuery === 'string' && resourceQuery !== '') {
// If this bundle is inlined, use the resource query to get the correct url.
// format is like `?http://0.0.0.0:8096&sockPort=8097&sockHost=localhost`
urlParts = url.parse(resourceQuery // strip leading `?` from query string to get a valid URL
.substr(1) // replace first `&` with `?` to have a valid query string
.replace('&', '?'), true);
} else {
// Else, get the url from the <script> this file was called with.
var scriptHost = getCurrentScriptSource();
urlParts = url.parse(scriptHost || '/', true, true);
} // Use parameter to allow passing location in unit tests
if (typeof currentLocation === 'string' && currentLocation !== '') {
currentLocation = url.parse(currentLocation);
} else {
currentLocation = self.location;
}
return getSocketUrl(urlParts, currentLocation);
}
/*
* Gets socket URL based on Script Source/Location
* (scriptSrc: URL, location: URL) -> URL
*/
function getSocketUrl(urlParts, loc) {
var auth = urlParts.auth,
query = urlParts.query;
var hostname = urlParts.hostname,
protocol = urlParts.protocol,
port = urlParts.port;
if (!port || port === '0') {
port = loc.port;
} // check ipv4 and ipv6 `all hostname`
// why do we need this check?
// hostname n/a for file protocol (example, when using electron, ionic)
// see: https://github.com/webpack/webpack-dev-server/pull/384
if ((hostname === '0.0.0.0' || hostname === '::') && loc.hostname && loc.protocol.indexOf('http') === 0) {
hostname = loc.hostname;
} // `hostname` can be empty when the script path is relative. In that case, specifying
// a protocol would result in an invalid URL.
// When https is used in the app, secure websockets are always necessary
// because the browser doesn't accept non-secure websockets.
if (hostname && hostname !== '127.0.0.1' && (loc.protocol === 'https:' || urlParts.hostname === '0.0.0.0')) {
protocol = loc.protocol;
} // all of these sock url params are optionally passed in through
// resourceQuery, so we need to fall back to the default if
// they are not provided
var sockHost = query.sockHost || hostname;
var sockPath = query.sockPath || '/sockjs-node';
var sockPort = query.sockPort || port;
if (sockPort === 'location') {
sockPort = loc.port;
}
return url.format({
protocol: protocol,
auth: auth,
hostname: sockHost,
port: sockPort,
// If sockPath is provided it'll be passed in via the resourceQuery as a
// query param so it has to be parsed out of the querystring in order for the
// client to open the socket to the correct location.
pathname: sockPath
});
}
module.exports = createSocketUrl;