Architecture¶

Core¶

FileManager¶

• Kept up to date the list of shared files
• Can make fast search with indexed words
• Cuts file in chunks
• Each chunk has a hash and can be read or write
• The directory structure can be browse
• Theses data (files/dirs/chunks/hashes) are persisted

NetworkListener¶

• Listens for new TCP connections from peers. Forward it to the PeerManager.
• Listens for new UDP datagrams.
• Provides some interfaces to listen some events like :
  • New chat message
  • New search result
• Sent periodically an UDP datagram to show its presence.
  • This message contains the top chunks
  • For each chunk the known IP's are gave to the DownloadManager

DownloadManager¶

• Has a download list with different status
• Has a pool of downloader which will choose a free chunk and :
  • Download it from a know peer.
  • Ask first the chunk's peer source for the hashes if they are unknown

UploadManager¶

• Listens the PeerManager for new upload requests.
• Manage a pool of uploaders which will read a chunk from FileManager and send it to the remote peer.

PeerManager¶

• Knows all other peers and different information about them like nick, amount of sharing and speed.
• Each peer has a connection (socket) pool.
• Treats new messages (unicast) from other peers.

GUI¶

Common¶

LogManager¶

• Logs some kind of severity messages
• Can store the log in a file
• Used by Core and GUI