1import net from 'net'
2
3export const tcpProbePort = async (host: string, port: number, timeoutMs = 2000): Promise<boolean> => {
4  return new Promise<boolean>((resolve) => {
5    const socket = new net.Socket()
6    socket.setTimeout(timeoutMs)
7    socket.on('connect', () => { socket.destroy(); resolve(true) })
8    socket.on('timeout', () => { socket.destroy(); resolve(false) })
9    socket.on('error', () => { socket.destroy(); resolve(false) })
10    socket.connect(port, host)
11  })
12}
13