mirror of
https://github.com/libp2p/go-libp2p.git
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41c6834850
Also, make the libp2p constructor fully useful. There should now be no need to manually construct a swarm/host.
57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
package main
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import (
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"context"
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"fmt"
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"log"
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"math/rand"
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libp2p "github.com/libp2p/go-libp2p"
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crypto "github.com/libp2p/go-libp2p-crypto"
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ps "github.com/libp2p/go-libp2p-peerstore"
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ma "github.com/multiformats/go-multiaddr"
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)
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// helper method - create a lib-p2p host to listen on a port
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func makeRandomNode(port int, done chan bool) *Node {
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// Ignoring most errors for brevity
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// See echo example for more details and better implementation
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priv, _, _ := crypto.GenerateKeyPair(crypto.Secp256k1, 256)
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listen, _ := ma.NewMultiaddr(fmt.Sprintf("/ip4/127.0.0.1/tcp/%d", port))
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host, _ := libp2p.New(
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context.Background(),
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libp2p.ListenAddrs(listen),
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libp2p.Identity(priv),
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)
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return NewNode(host, done)
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}
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func main() {
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// Choose random ports between 10000-10100
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rand.Seed(666)
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port1 := rand.Intn(100) + 10000
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port2 := port1 + 1
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done := make(chan bool, 1)
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// Make 2 hosts
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h1 := makeRandomNode(port1, done)
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h2 := makeRandomNode(port2, done)
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h1.Peerstore().AddAddrs(h2.ID(), h2.Addrs(), ps.PermanentAddrTTL)
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h2.Peerstore().AddAddrs(h1.ID(), h1.Addrs(), ps.PermanentAddrTTL)
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log.Printf("This is a conversation between %s and %s\n", h1.ID(), h2.ID())
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// send messages using the protocols
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h1.Ping(h2.Host)
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h2.Ping(h1.Host)
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h1.Echo(h2.Host)
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h2.Echo(h1.Host)
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// block until all responses have been processed
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for i := 0; i < 4; i++ {
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<-done
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}
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}
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