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Re: TCP / IP
From: Honza Vlach <janus () volny cz>
Date: Sun, 17 Oct 2004 11:12:39 +0200

Hi,
actually, the window says how much the other host can accept due to e.g.
link congestion, disk activity etc. There is no point in sending more
data than the destination can handle, because it would ack the part of it
and everything after the error must be retransmitted.

So in your example, if host sees that segment 3 is missing, it's pointles
if it has 4,5 and 7. Retransmissions would go from segment 3. 

HTH,
Honza


On Sat, Oct 16, 2004 at 04:49:52PM -0700, D B wrote:
From: D B <geggam692000 () yahoo com>
To: full-disclosure () lists netsys com
Subject: [Full-disclosure] TCP / IP
Date: Sat, 16 Oct 2004 16:49:52 -0700 (PDT)

I am just a student learning about TCP/IP and dont
know where to post this idea, figured posting it here
would get me some flames and links.

Why not make the window the size of the file to be
transmitted and the ack back have the segments missing
thereby reducing overall overhead and lag time.

ie 

host1 1mb file --- sent -- > host2

host1 <-- ack missing 3 6 8 segments -- host2

host1 -- segments 3 6 8 sent ---> host2

host1 <-- FIN --- host2



The window could be dynamic according to content size.

Buffers would have to be huge but with RAM so cheap
these days why not ?

or am I smoking newbie crack ?

Dan


              
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