Protocols¶

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

Core <-> Core¶

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

Downloading threads¶

There is NbDownloadThread threads. Each thread will choose a free chunk and download it.
There is no more than one downloading from B to A. A peer which a download is active is setted as not free.

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

- Take the first file in F -> f.
Loop :
   If the hash chunks of f 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   
      - Take the first file in F -> f.
   Else :
      - Take the next file in F -> f.

Parameters¶

Most parameters will be stored as constants in their component.

Core <-> GUI¶