element-web/cypress/plugins/utils/port.ts
Michael Telatynski ca1d9729fd
Extract dockery bits from Cypress' synapsedocker plugin (#9103)
* Extract dockery bits from Cypress' synapsedocker plugin

* Update cypress/plugins/docker/index.ts

Co-authored-by: David Baker <dbkr@users.noreply.github.com>

Co-authored-by: David Baker <dbkr@users.noreply.github.com>
2022-07-27 15:22:14 +00:00

27 lines
908 B
TypeScript

/*
Copyright 2022 The Matrix.org Foundation C.I.C.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
import * as net from "net";
export async function getFreePort(): Promise<number> {
return new Promise<number>(resolve => {
const srv = net.createServer();
srv.listen(0, () => {
const port = (<net.AddressInfo>srv.address()).port;
srv.close(() => resolve(port));
});
});
}