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+* Bencode [spec](http://www.bittorrent.org/beps/bep_0003.html#bencoding)
+ * [x] decoding
+ * [x] encoding
+* Tracker
+ * [ ] udp [spec](http://www.bittorrent.org/beps/bep_0015.html)
+ * [ ] http [spec](http://www.bittorrent.org/beps/bep_0003.html#trackers)
+* Metainfo
+ * [ ] torrent files [spec](https://wiki.theory.org/BitTorrentSpecification#Metainfo_File_Structure)
+ * [ ] magnet links