50 lines
993 B
Go
50 lines
993 B
Go
// Copyright (C) 2018 Storj Labs, Inc.
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// See LICENSE for copying information.
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// +build ignore
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package main
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import (
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"flag"
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"fmt"
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"net"
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"os"
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"os/signal"
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"strconv"
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"syscall"
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)
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var (
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fromPort = flag.Int("from", 0, "first port")
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toPort = flag.Int("to", 10000, "last port")
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)
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func main() {
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flag.Parse()
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var listeners []net.Listener
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var unableToStart []int
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for port := *fromPort; port < *toPort; port++ {
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listener, err := net.Listen("tcp", net.JoinHostPort("127.0.0.1", strconv.Itoa(port)))
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if err != nil {
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unableToStart = append(unableToStart, port)
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continue
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}
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listeners = append(listeners, listener)
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}
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fmt.Printf("use-ports: unable to start on %v\n", unableToStart)
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fmt.Printf("use-ports: listening on ports %v to %v\n", *fromPort, *toPort)
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sigs := make(chan os.Signal, 1)
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signal.Notify(sigs, syscall.SIGQUIT)
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<-sigs
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for _, listener := range listeners {
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err := listener.Close()
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if err != nil {
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fmt.Printf("unable to close: %v\n", err)
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}
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}
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}
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