github.com/mysteriumnetwork/node@v0.0.0-20240516044423-365054f76801/cmd/natdisco/main.go (about)

     1  /*
     2   * Copyright (C) 2021 The "MysteriumNetwork/node" Authors.
     3   *
     4   * This program is free software: you can redistribute it and/or modify
     5   * it under the terms of the GNU General Public License as published by
     6   * the Free Software Foundation, either version 3 of the License, or
     7   * (at your option) any later version.
     8   *
     9   * This program is distributed in the hope that it will be useful,
    10   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12   * GNU General Public License for more details.
    13   *
    14   * You should have received a copy of the GNU General Public License
    15   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    16   */
    17  
    18  package main
    19  
    20  import (
    21  	"context"
    22  	"flag"
    23  	"fmt"
    24  	"os"
    25  	"strings"
    26  	"time"
    27  
    28  	"github.com/mysteriumnetwork/node/nat"
    29  
    30  	"github.com/mysteriumnetwork/node/nat/behavior"
    31  )
    32  
    33  const addressListSeparator = ","
    34  
    35  var (
    36  	addressList  = flag.String("servers", "stun.mysterium.network:3478,stun.stunprotocol.org:3478,stun.sip.us:3478", "comma-separated list of STUN servers")
    37  	reqTimeout   = flag.Duration("req-timeout", 1*time.Second, "timeout to wait for each STUN server response")
    38  	totalTimeout = flag.Duration("total-timeout", 10*time.Second, "overall operation deadline")
    39  	raw          = flag.Bool("raw", false, "print raw NAT_TYPE_* value")
    40  )
    41  
    42  func run() int {
    43  	flag.Parse()
    44  
    45  	var addresses []string
    46  	for _, address := range strings.Split(*addressList, addressListSeparator) {
    47  		address = strings.TrimSpace(address)
    48  		if address != "" {
    49  			addresses = append(addresses, address)
    50  		}
    51  	}
    52  
    53  	ctx, cl := context.WithTimeout(context.Background(), *totalTimeout)
    54  	defer cl()
    55  	res, err := behavior.RacingDiscoverNATBehavior(ctx, addresses, *reqTimeout)
    56  	if err != nil {
    57  		fmt.Fprintln(os.Stderr, "error:", err)
    58  		return 1
    59  	}
    60  	if *raw {
    61  		fmt.Println(res)
    62  	} else {
    63  		fmt.Println("NAT Type:", nat.HumanReadableTypes[res])
    64  	}
    65  	return 0
    66  }
    67  
    68  func main() {
    69  	os.Exit(run())
    70  }