Another p2p network library in Go
- Elegantly simple architecture (pgcli & pgmap & OpenID Connect)
- NAT traversal with high success rate (STUN & UPnP & PortScan)
- Full support for IPv4/IPv6 dual stack
- Easy-to-use library (net.PacketConn)
- Transport layer security (curve25519 & chacha20poly1305 for end-to-end encryption)
- Cross-platform compatibility (linux/windows/macOS/iOS/android)
$ pgmap -l 127.0.0.1:9987 --secret-key 5172554832d76672d1959a5ac63c5ab9 \
--stun stun.qq.com:3478 --stun stun.miwifi.com:3478
$ caddy reverse-proxy --from https://synf.in/pg --to 127.0.0.1:9987
$ pgcli secret --secret-key 5172554832d76672d1959a5ac63c5ab9 > ~/.peerguard_network_secret.json
# pgcli vpn -s wss://synf.in/pg --ipv4 100.64.0.1/24 --ipv6 fd00::1/64
Note
Since the default encryption algorithm has been changed from AES to ChaCha20, it is required that the local clocks of each VPN node do not differ by more than 5 seconds.
peermapURL := "wss://synf.in/pg"
intent, err := network.JoinOIDC(oidc.ProviderGoogle, peermapURL)
if err != nil {
panic(err)
}
fmt.Println(intent.AuthURL()) // https://synf.in/oidc/google?state=5G68CtYnMRMdrtrRF
networkSecret, err := intent.Wait(context.TODO())
if err != nil {
panic(err)
}
pmap, err := peermap.New(peermapURL, networkSecret)
if err != nil {
panic(err)
}
packetConn, err := p2p.ListenPacket(
pmap,
p2p.ListenPeerID("uniqueString"), // any unique string (less than 256bytes)
)
if err != nil {
panic(err)
}
// unreliability echo server
buf := make([]byte, 1024)
for {
n, peerID, err := packetConn.ReadFrom(buf)
if err != nil {
panic(err)
}
fmt.Println("Echo packet to", peerID, string(buf[:n]))
_, err = packetConn.WriteTo(peerID, buf[:n])
if err != nil {
panic(err)
}
}
...
packetConn, err := p2p.ListenPacket(pmap)
if err != nil {
panic(err)
}
defer packetConn.Close()
// "uniqueString" is above echo server's address
_, err := packetConn.WriteTo(peer.ID("uniqueString"), []byte("hello"))
if err != nil {
panic(err)
}
packetConn.SetReadDeadline(time.Now().Add(time.Second))
buf := make([]byte, 1024)
n, peerID, err := packetConn.ReadFrom(buf)
if err !=nil {
panic(err)
}
fmt.Println(peerID, ":", string(buf[:n])) // uniqueString : hello