Ejemplo n.º 1
0
func setupUPnP(r rand.Source) int {
	var externalPort = 0
	if len(cfg.Options.ListenAddress) == 1 {
		_, portStr, err := net.SplitHostPort(cfg.Options.ListenAddress[0])
		if err != nil {
			l.Warnln(err)
		} else {
			// Set up incoming port forwarding, if necessary and possible
			port, _ := strconv.Atoi(portStr)
			igd, err := upnp.Discover()
			if err == nil {
				for i := 0; i < 10; i++ {
					r := 1024 + int(r.Int63()%(65535-1024))
					err := igd.AddPortMapping(upnp.TCP, r, port, "syncthing", 0)
					if err == nil {
						externalPort = r
						l.Infoln("Created UPnP port mapping - external port", externalPort)
						break
					}
				}
				if externalPort == 0 {
					l.Warnln("Failed to create UPnP port mapping")
				}
			} else {
				l.Infof("No UPnP gateway detected")
				if debugNet {
					l.Debugf("UPnP: %v", err)
				}
			}
		}
	} else {
		l.Warnln("Multiple listening addresses; not attempting UPnP port mapping")
	}
	return externalPort
}
Ejemplo n.º 2
0
func setupUPnP() int {
	var externalPort = 0
	if len(cfg.Options.ListenAddress) == 1 {
		_, portStr, err := net.SplitHostPort(cfg.Options.ListenAddress[0])
		if err != nil {
			warnln(err)
		} else {
			// Set up incoming port forwarding, if necessary and possible
			port, _ := strconv.Atoi(portStr)
			igd, err := upnp.Discover()
			if err == nil {
				for i := 0; i < 10; i++ {
					r := 1024 + rand.Intn(65535-1024)
					err := igd.AddPortMapping(upnp.TCP, r, port, "syncthing", 0)
					if err == nil {
						externalPort = r
						infoln("Created UPnP port mapping - external port", externalPort)
						break
					}
				}
				if externalPort == 0 {
					warnln("Failed to create UPnP port mapping")
				}
			} else {
				infof("No UPnP IGD device found, no port mapping created (%v)", err)
			}
		}
	} else {
		warnln("Multiple listening addresses; not attempting UPnP port mapping")
	}
	return externalPort
}