func (ids *IDService) consumeObservedAddress(observed []byte, c inet.Conn) { if observed == nil { return } maddr, err := ma.NewMultiaddrBytes(observed) if err != nil { log.Debugf("error parsing received observed addr for %s: %s", c, err) return } // we should only use ObservedAddr when our connection's LocalAddr is one // of our ListenAddrs. If we Dial out using an ephemeral addr, knowing that // address's external mapping is not very useful because the port will not be // the same as the listen addr. ifaceaddrs, err := ids.Host.Network().InterfaceListenAddresses() if err != nil { log.Infof("failed to get interface listen addrs", err) return } log.Debugf("identify identifying observed multiaddr: %s %s", c.LocalMultiaddr(), ifaceaddrs) if !addrInAddrs(c.LocalMultiaddr(), ifaceaddrs) { // not in our list return } // ok! we have the observed version of one of our ListenAddresses! log.Debugf("added own observed listen addr: %s --> %s", c.LocalMultiaddr(), maddr) ids.observedAddrs.Add(maddr, c.RemoteMultiaddr()) }