// Handshake3Update updates local knowledge with the information in the
// handshake3 msg we received from remote client.
func Handshake3Update(lpeer, rpeer peer.Peer, msg *pb.Handshake3) (*Handshake3Result, error) {
res := &Handshake3Result{}
// our observed address
observedAddr, err := ma.NewMultiaddrBytes(msg.GetObservedAddr())
if err != nil {
return res, err
}
if lpeer.AddAddress(observedAddr) {
log.Infof("(nat) added new local, remote-observed address: %s", observedAddr)
}
res.LocalObservedAddress = observedAddr
// remote's reported addresses
for _, a := range msg.GetListenAddrs() {
addr, err := ma.NewMultiaddrBytes(a)
if err != nil {
err = fmt.Errorf("remote peer address not a multiaddr: %s", err)
log.Errorf("Handshake3 error %s", err)
return res, err
}
rpeer.AddAddress(addr)
res.RemoteListenAddresses = append(res.RemoteListenAddresses, addr)
}
return res, nil
}
// Handshake3Msg constructs a Handshake3 msg.
func Handshake3Msg(localPeer peer.Peer, remoteAddr ma.Multiaddr) *pb.Handshake3 {
var msg pb.Handshake3
// don't need publicKey after secure channel.
// msg.PublicKey = localPeer.PubKey().Bytes()
// local listen addresses
addrs := localPeer.Addresses()
msg.ListenAddrs = make([][]byte, len(addrs))
for i, a := range addrs {
msg.ListenAddrs[i] = a.Bytes()
}
// observed remote address
msg.ObservedAddr = remoteAddr.Bytes()
// services
// srv := localPeer.Services()
// msg.Services = make([]mux.ProtocolID, len(srv))
// for i, pid := range srv {
// msg.Services[i] = pid
// }
return &msg
}