Protocols¶

This page describes the protocols used by Aybabtu for network communication between cores and between core and GUI.

Core <-> Core¶

Notes pour plus tards¶

• Le message HaveChunks doit être multicast et la réponse est un datagramme UDP. Il n'est pas possible de maintenir N-1 connexion TCP en permanence ou N est le nombre de peer. (à mesurer). DU coup ce message peut remplacer le IMAlive

See source:protos/network_protocol.proto for message details.

There is no more than one downloading from B to A. A peer which a download is active is setted as not free.

There is NbDownloadThread thread T. Each thread will choose a free chunk and download it. Here is the thread loop.

F : the list of all unfinished download
C : A list of chunk candidates (empty at start)

While not end of F
   - Take the next file in F -> f.
   If the hash chunks of a file are unknown :
      - Ask the hashes to the source (see the message _GetHashes _).
   For each chunk not downloaded or not being downloaded -> c :
      If c has a free peer :
         - add c to C
   If C isn't empty :
      - Take the best chunk in C based on peer.downloadRate. If there is more than one best chunk then choose one randomly.
      - Grab the lock for the peer
      - Request the download   

Parameters¶

Most parameters will be stored as constants in their component.

Core <-> GUI¶