ceremonyclient/go-libp2p/p2p/transport/quic/cmd/client/main.go

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2023-08-21 03:50:38 +00:00
package main
import (
"context"
"crypto/rand"
"fmt"
"io"
"log"
"os"
"github.com/libp2p/go-libp2p/p2p/transport/quicreuse"
ic "github.com/libp2p/go-libp2p/core/crypto"
"github.com/libp2p/go-libp2p/core/peer"
libp2pquic "github.com/libp2p/go-libp2p/p2p/transport/quic"
ma "github.com/multiformats/go-multiaddr"
)
func main() {
if len(os.Args) != 3 {
fmt.Printf("Usage: %s <multiaddr> <peer id>", os.Args[0])
return
}
if err := run(os.Args[1], os.Args[2]); err != nil {
log.Fatalf(err.Error())
}
}
func run(raddr string, p string) error {
peerID, err := peer.Decode(p)
if err != nil {
return err
}
addr, err := ma.NewMultiaddr(raddr)
if err != nil {
return err
}
priv, _, err := ic.GenerateECDSAKeyPair(rand.Reader)
if err != nil {
return err
}
reuse, err := quicreuse.NewConnManager([32]byte{})
if err != nil {
return err
}
t, err := libp2pquic.NewTransport(priv, reuse, nil, nil, nil)
if err != nil {
return err
}
log.Printf("Dialing %s\n", addr.String())
conn, err := t.Dial(context.Background(), addr, peerID)
if err != nil {
return err
}
defer conn.Close()
str, err := conn.OpenStream(context.Background())
if err != nil {
return err
}
defer str.Close()
const msg = "Hello world!"
log.Printf("Sending: %s\n", msg)
if _, err := str.Write([]byte(msg)); err != nil {
return err
}
if err := str.CloseWrite(); err != nil {
return err
}
data, err := io.ReadAll(str)
if err != nil {
return err
}
log.Printf("Received: %s\n", data)
return nil
}