+
+"""The main apt-dht modules.
+
+Diagram of the interaction between the given modules::
+
+ +---------------+ +-----------------------------------+ +-------------
+ | AptDHT | | DHT | | Internet
+ | |--->|join DHT|----|--\
+ | |--->|loadConfig | | | Another
+ | |--->|getValue | | | Peer
+ | |--->|storeValue DHT|<---|--/
+ | |--->|leave | |
+ | | +-----------------------------------+ |
+ | | +-------------+ +----------------+ |
+ | | | PeerManager | | HTTPDownloader*| |
+ | |--->|get |--->|get HTTP|----|---> Mirror
+ | | | |--->|getRange | |
+ | |--->|close |--->|close HTTP|----|--\
+ | | +-------------+ +----------------+ | |
+ | | +-----------------------------------+ | | Another
+ | | | HTTPServer | | | Peer
+ | |--->|getHTTPFactory HTTP|<---|--/
+ |check_freshness|<---| | +-------------
+ | get_resp|<---| | +-------------
+ | /----|--->|setDirectories HTTP|<---|HTTP Request
+ | | | +-----------------------------------+ |
+ | | | +---------------+ +--------------+ | Local Net
+ | | | | CacheManager | | ProxyFile- | | (apt)
+ | | |--->|scanDirectories| | Stream* | |
+ | setDirectories|<---| |--->|__init__ HTTP|--->|HTTP Response
+ | |--->|save_file | | | +-------------
+ | |--->|save_error | | | +-------------
+ |new_cached_file|<---| | | file|--->|write file
+ | | +---------------+ +--------------+ |
+ | | +---------------+ +--------------+ | Filesystem
+ | | | MirrorManager | | AptPackages* | |
+ | |--->|updatedFile |--->|file_updated |--->|write file
+ | |--->|findHash |--->|findHash | |
+ +---------------+ +---------------+ +--------------+ +-------------
+
+"""