[e2e] Question about RFC 2581

[Dado Colussi]

Mark Allman wrote:
>>Why is (2) slightly more aggressive than 1 segment per RTT if the
>>receiver ACKs every segment?
>>
>>I just don't get it.
> 
> 
> Stupid Author Error.
> 
> It will be fixed in the revision (which is underway).

Hi Mark and Michael,

if acknowledgment means a *segment* transmitted by a receiver that 
indicates successfully recieved segments, then it is indeed more 
aggressive because (2) is used for each ACK segment, not for each 
transmitted segment that has been successfully received.

If acknowledgment means *indication* of a successfully received segment, 
then (2) should be used for each ACK segment N times where N is the 
number of segments indicated successfully received by that ACK segment.

I've always found the term ACK confusing. Sometimes it means the first, 
and sometimes the latter.

Cheers, Dado