This indicates an attempt to use Xunlei.
Xunlei is a download manager and peer-to-peer file sharing software developed by Thunder Networking Technologies. It supports HTTP, FTP, eDonkey, and BitTorrent protocols. Xunlei sets up its own storage servers to backup files which are not active. This feature is named as High-Speed Channel and allows Xunlei users retrieve data that are no longer being shared by peers.