Brad Fitzpatrick
14559340ee
* adds new packet "netcheck" to do the checking of UDP, IPv6, and nearest DERP server, and the Report type for all that (and more in the future, probably pulling in danderson's natprobe) * new tailcfg.NetInfo type * cmd/tailscale netcheck subcommand (tentative name, likely to change/move) to print out the netcheck.Report. Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
43 lines
1.0 KiB
Go
43 lines
1.0 KiB
Go
// Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main // import "tailscale.com/cmd/tailscale"
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import (
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"context"
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"fmt"
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"log"
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"sort"
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"time"
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"github.com/pborman/getopt/v2"
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"tailscale.com/netcheck"
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)
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func isSubcommand(cmd string) bool {
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return len(getopt.Args()) == 1 && getopt.Args()[0] == cmd
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}
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func netcheckCmd() {
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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report, err := netcheck.GetReport(ctx, log.Printf)
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if err != nil {
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log.Fatal(err)
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}
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fmt.Printf("\nReport:\n")
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fmt.Printf("\t* UDP: %v\n", report.UDP)
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fmt.Printf("\t* IPv6: %v\n", report.IPv6)
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fmt.Printf("\t* MappingVariesByDestIP: %v\n", report.MappingVariesByDestIP)
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fmt.Printf("\t* DERP latency:\n")
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var ss []string
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for s := range report.DERPLatency {
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ss = append(ss, s)
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}
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sort.Strings(ss)
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for _, s := range ss {
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fmt.Printf("\t\t- %s = %v\n", s, report.DERPLatency[s])
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}
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}
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