108 lines
2.1 KiB
Go
108 lines
2.1 KiB
Go
// Copyright (C) 2014 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package main
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import (
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"crypto/tls"
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"errors"
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"flag"
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"fmt"
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"net/url"
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"os"
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"time"
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"github.com/syncthing/syncthing/lib/config"
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"github.com/syncthing/syncthing/lib/discover"
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"github.com/syncthing/syncthing/lib/protocol"
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)
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var timeout = 5 * time.Second
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func main() {
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var server string
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flag.StringVar(&server, "server", "", "Announce server (blank for default set)")
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flag.DurationVar(&timeout, "timeout", timeout, "Query timeout")
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flag.Usage = usage
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flag.Parse()
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if flag.NArg() != 1 {
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flag.Usage()
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os.Exit(64)
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}
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id, err := protocol.DeviceIDFromString(flag.Args()[0])
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if err != nil {
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fmt.Println(err)
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os.Exit(1)
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}
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if server != "" {
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checkServers(id, server)
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} else {
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checkServers(id, config.DefaultDiscoveryServers...)
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}
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}
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type checkResult struct {
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server string
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addresses []string
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error
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}
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func checkServers(deviceID protocol.DeviceID, servers ...string) {
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t0 := time.Now()
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resc := make(chan checkResult)
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for _, srv := range servers {
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srv := srv
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go func() {
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res := checkServer(deviceID, srv)
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res.server = srv
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resc <- res
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}()
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}
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for range servers {
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res := <-resc
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u, _ := url.Parse(res.server)
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fmt.Printf("%s (%v):\n", u.Host, time.Since(t0))
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if res.error != nil {
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fmt.Println(" " + res.error.Error())
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}
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for _, addr := range res.addresses {
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fmt.Println(" address:", addr)
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}
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}
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}
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func checkServer(deviceID protocol.DeviceID, server string) checkResult {
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disco, err := discover.NewGlobal(server, tls.Certificate{}, nil)
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if err != nil {
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return checkResult{error: err}
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}
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res := make(chan checkResult, 1)
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time.AfterFunc(timeout, func() {
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res <- checkResult{error: errors.New("timeout")}
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})
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go func() {
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addresses, err := disco.Lookup(deviceID)
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res <- checkResult{addresses: addresses, error: err}
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}()
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return <-res
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}
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func usage() {
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fmt.Printf("Usage:\n\t%s [options] <device ID>\n\nOptions:\n", os.Args[0])
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flag.PrintDefaults()
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}
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