[p2p-hackers] TCP-like Congestion Control

[David Barrett]

Lars-Åke Larzon wrote:
> 
> 17 sep 2005 kl. 13.17 skrev David Barrett:
>>
>> onACK( numBytes )
>>     - if( cwnd < ssthresh ) cwnd += min( numBytes, MTU )
>>     - else                  cwnd += MTU*MTU / 2
> 
> Why do you divide by two? AFAIK, you should divide by cwnd if you're  in 
> the congestion avoidance phase.

Good catch.  What about the others -- do they look right?

onSend( numBytes )
     - pipe += numBytes

onACK( numBytes )
     - if( cwnd < ssthresh ) cwnd += min( numBytes, MTU )
     - else                  cwnd += MTU*MTU / cwnd

onDrop( )
     - cwnd     = max( MTU, cwnd/2 )
     - ssthresh = cwnd

onTimeout( )
     - ssthresh = max( pipe/2, MTU*2 )
     - cwnd     = MTU
     - pipe     = 0

-david