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