[Pydonkey-general] Threading vs. Nonthreading

[BuziFuzee]

Okay, after having a few thoughts about pysocket, several questions came up:

1.) Bandwidth control
Bandwidth control can be applied very easily with the polling algorithm. 
so the handle_read/write_event must return a number of how many bytes 
read. The polling is be done until all up/down is excausted, but the 
list is kept. Then the packet-processor-callback is started that 
processes all the data collected. If after this there is  time until new 
bandwidth is avaiable, the prozess can wait or do anything else. If the 
process takes longer, the amount of time he took longer is added to the 
bandwidth. In worst case, this won't give a flat line, but it's much 
more efficient.

2.) Priority connections
When someone wants a special file very fast the connections must have a 
priority. Just solving it via amount of source clients is pretty dumb. 
So we have to rewrite the map of the asyncore and the polling algorithm.
Further possibility is to give different amounts to read at the 
recv-statement. So that high priority connections get all the buffers 
they get, and lower connections only priority * n characters per poll.

3.) possible attacks
A detection must be added for someone sending garbled packets. So if  
more then x % of the packets are garbled, the connection gets killed.

4.) threading the polling vs. serializing it
Maybe we should make an approach to multithreading. Not for every 
connection, only for the basic elements.

I made a graphic, which shall make things clearer: