Esempio n. 1
0
func discovery(addr string) *discover.Discoverer {
	_, portstr, err := net.SplitHostPort(addr)
	fatalErr(err)
	port, _ := strconv.Atoi(portstr)

	if !cfg.Options.LocalAnnEnabled {
		port = -1
	} else if verbose {
		infoln("Sending local discovery announcements")
	}

	if !cfg.Options.GlobalAnnEnabled {
		cfg.Options.GlobalAnnServer = ""
	} else if verbose {
		infoln("Sending external discovery announcements")
	}

	disc, err := discover.NewDiscoverer(myID, port, cfg.Options.GlobalAnnServer)

	if err != nil {
		warnf("No discovery possible (%v)", err)
	}

	return disc
}
Esempio n. 2
0
func discovery(extPort int) *discover.Discoverer {
	disc, err := discover.NewDiscoverer(myID, cfg.Options.ListenAddress, cfg.Options.LocalAnnPort)
	if err != nil {
		l.Warnf("No discovery possible (%v)", err)
		return nil
	}

	if cfg.Options.LocalAnnEnabled {
		l.Infoln("Sending local discovery announcements")
		disc.StartLocal()
	}

	if cfg.Options.GlobalAnnEnabled {
		l.Infoln("Sending global discovery announcements")
		disc.StartGlobal(cfg.Options.GlobalAnnServer, uint16(extPort))
	}

	return disc
}
Esempio n. 3
0
func connect(myID string, addr string, nodeAddrs map[string][]string, m *Model, cfg *tls.Config) {
	_, portstr, err := net.SplitHostPort(addr)
	fatalErr(err)
	port, _ := strconv.Atoi(portstr)

	if opts.Discovery.NoLocalDiscovery {
		port = -1
	} else {
		infoln("Sending local discovery announcements")
	}

	if opts.Discovery.NoExternalDiscovery {
		opts.Discovery.ExternalPort = -1
	} else {
		infoln("Sending external discovery announcements")
	}

	disc, err := discover.NewDiscoverer(myID, port, opts.Discovery.ExternalPort, opts.Discovery.ExternalServer)

	if err != nil {
		warnf("No discovery possible (%v)", err)
	}

	for {
	nextNode:
		for nodeID, addrs := range nodeAddrs {
			if nodeID == myID {
				continue
			}
			if m.ConnectedTo(nodeID) {
				continue
			}
			for _, addr := range addrs {
				if addr == "dynamic" {
					var ok bool
					if disc != nil {
						addr, ok = disc.Lookup(nodeID)
					}
					if !ok {
						continue
					}
				}

				if opts.Debug.TraceNet {
					debugln("NET: Dial", nodeID, addr)
				}
				conn, err := tls.Dial("tcp", addr, cfg)
				if err != nil {
					if opts.Debug.TraceNet {
						debugln("NET:", err)
					}
					continue
				}

				remoteID := certId(conn.ConnectionState().PeerCertificates[0].Raw)
				if remoteID != nodeID {
					warnln("Unexpected nodeID", remoteID, "!=", nodeID)
					conn.Close()
					continue
				}

				m.AddConnection(conn, remoteID)
				continue nextNode
			}
		}

		time.Sleep(opts.Advanced.ConnInterval)
	}
}