7 flog "github.com/anacrolix/log"
8 "github.com/elgatito/upnp"
11 func addPortMapping(d upnp.Device, proto upnp.Protocol, internalPort int, debug bool) {
12 externalPort, err := d.AddPortMapping(proto, internalPort, internalPort, "anacrolix/torrent", 0)
14 log.Printf("error adding %s port mapping: %s", proto, err)
15 } else if externalPort != internalPort {
16 log.Printf("external port %d does not match internal port %d in port mapping", externalPort, internalPort)
18 log.Printf("forwarded external %s port %d", proto, externalPort)
22 func (cl *Client) forwardPort() {
25 if cl.config.NoDefaultPortForwarding {
29 ds := upnp.Discover(0, 2*time.Second)
31 flog.Default.Handle(flog.Fmsg("discovered %d upnp devices", len(ds)))
32 port := cl.incomingPeerPort()
34 for _, d := range ds {
35 go addPortMapping(d, upnp.TCP, port, cl.config.Debug)
36 go addPortMapping(d, upnp.UDP, port, cl.config.Debug)