├── .gitignore
├── LICENSE
├── main.go
└── readme.md


/.gitignore:
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 1 | # Binaries for programs and plugins
 2 | *.exe
 3 | *.exe~
 4 | *.dll
 5 | *.so
 6 | *.dylib
 7 | 
 8 | # Test binary, build with `go test -c`
 9 | *.test
10 | 
11 | # Output of the go coverage tool, specifically when used with LiteIDE
12 | *.out
13 | .idea/
14 | .DS_Store
15 | .vs/
16 | build/
17 | 


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/LICENSE:
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 1 | MIT License
 2 | 
 3 | Copyright (c) 2018 BenDerPan
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 


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/main.go:
--------------------------------------------------------------------------------
 1 | package main
 2 | 
 3 | import (
 4 | 	"context"
 5 | 	"flag"
 6 | 	"fmt"
 7 | 	"github.com/libp2p/go-libp2p"
 8 | 	"github.com/libp2p/go-libp2p-core/crypto"
 9 | 	"github.com/libp2p/go-libp2p-kad-dht"
10 | 	"github.com/multiformats/go-multiaddr"
11 | 	mrand "math/rand"
12 | 	"os"
13 | )
14 | 
15 | func main() {
16 | 	help := flag.Bool("help", false, "Display Help")
17 | 	listenHost := flag.String("host", "0.0.0.0", "The bootstrap node host listen address\n")
18 | 	port := flag.Int("port", 4001, "The bootstrap node listen port")
19 | 	flag.Parse()
20 | 
21 | 	if *help {
22 | 		fmt.Printf("This is a simple bootstrap node for kad-dht application using libp2p\n\n")
23 | 		fmt.Printf("Usage: \n   Run './bootnode'\nor Run './bootnode -host [host] -port [port]'\n")
24 | 
25 | 		os.Exit(0)
26 | 	}
27 | 
28 | 	fmt.Printf("[*] Listening on: %s with port: %d\n", *listenHost, *port)
29 | 
30 | 	ctx := context.Background()
31 | 	r := mrand.New(mrand.NewSource(int64(*port)))
32 | 
33 | 	// Creates a new RSA key pair for this host.
34 | 	prvKey, _, err := crypto.GenerateKeyPairWithReader(crypto.RSA, 2048, r)
35 | 	if err != nil {
36 | 		panic(err)
37 | 	}
38 | 
39 | 	// 0.0.0.0 will listen on any interface device.
40 | 	sourceMultiAddr, _ := multiaddr.NewMultiaddr(fmt.Sprintf("/ip4/%s/tcp/%d", *listenHost, *port))
41 | 
42 | 	// libp2p.New constructs a new libp2p Host.
43 | 	// Other options can be added here.
44 | 	host, err := libp2p.New(
45 | 		libp2p.ListenAddrs(sourceMultiAddr),
46 | 		libp2p.Identity(prvKey),
47 | 	)
48 | 
49 | 	if err != nil {
50 | 		panic(err)
51 | 	}
52 | 
53 | 	_, err = dht.New(ctx, host)
54 | 	if err != nil {
55 | 		panic(err)
56 | 	}
57 | 	fmt.Println("")
58 | 	fmt.Printf("[*] Your Bootstrap ID Is: /ip4/%s/tcp/%v/p2p/%s\n", *listenHost, *port, host.ID().Pretty())
59 | 	fmt.Println("")
60 | 	select {}
61 | }
62 | 


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/readme.md:
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 1 | This project is a simple implementation of kad-dht bootstrap node based on go-libp2p.
 2 | 
 3 | ### Usage:
 4 | 1. Run as default(bind on '0.0.0.0' port:4001):
 5 | * for linux: `./bootnode.amdx64-linux`
 6 | * for windows: `bootnode.amdx64-windows.exe`
 7 | 
 8 | 2. or Run with custom:
 9 | * for linux: `./bootnode.amdx64-linux -host [host] -port [port]`
10 | * for windows: `bootnode.amdx64-windows.exe -host [host] -port [port]`
11 | 
12 | example output:
13 | ```
14 | [*] Listening on: 0.0.0.0 with port: 4001
15 | 
16 | [*] Your Bootstrap ID Is: /ip4/0.0.0.0/tcp/4001/p2p/QmP2C45o2vZfy1JXWFZDUEzrQCigMtd4r3nesvArV8dFKd
17 | ```
18 | 
19 | 3. Copy the bootstrap id to your bootstrap nodes list and enjoy.
20 | 
21 | ### Notice: for a test example with kad-dht, visit [go-libp2p-examples](https://github.com/libp2p/go-libp2p-examples/blob/master/chat-with-rendezvous/chat.go)
22 | 


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