Adds error output for WebTorrent

cmd/webtorrent/init.go

@@ -54,7 +54,7 @@ func Init() {
 	if log.Debug().Enabled() {
 		srv.Listen(func(msg interface{}) {
 			switch msg.(type) {
-			case string:
+			case string, error:
 				log.Debug().Msgf("[webtorrent] %s", msg)
 			case *webtorrent.Message:
 				log.Trace().Any("msg", msg).Msgf("[webtorrent]")

pkg/webtorrent/server.go

@@ -130,23 +130,29 @@ func (s *Server) reader(ws *websocket.Conn, peerID string) error {
 		return nil
 	}
 
+	s.Fire("new offer: " + v.OfferId)
+
 	cipher, err := NewCipher(share.name, share.pwd, v.OfferId)
 	if err != nil {
+		s.Fire(err)
 		return nil
 	}
 
 	enc, err := base64.StdEncoding.DecodeString(v.Offer.SDP)
 	if err != nil {
+		s.Fire(err)
 		return nil
 	}
 
 	offer, err := cipher.Decrypt(enc)
 	if err != nil {
+		s.Fire(err)
 		return nil
 	}
 
 	answer, err := s.Exchange(share.src, string(offer))
 	if err != nil {
+		s.Fire(err)
 		return nil
 	}