20 lines
634 B
TypeScript
20 lines
634 B
TypeScript
import { createServer } from 'node:net'
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function canListen(host: string, port: number): Promise<boolean> {
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return new Promise(resolve => {
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const server = createServer()
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server.once('error', () => resolve(false))
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server.once('listening', () => server.close(() => resolve(true)))
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server.listen({ host, port, exclusive: true })
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})
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}
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export async function findAvailablePort(host: string, startPort: number): Promise<number> {
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for (let port = startPort; port <= 65535; port += 1) {
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if (await canListen(host, port)) return port
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}
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throw new Error(`未找到可用端口（起始端口：${startPort}）`)
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}
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