[Freeciv-Dev] Re: packet batches? (was: [Patch] Making city report list faster)

[Reinier Post <rp@xxxxxxxxxx>]

On Mon, Jun 10, 2002 at 07:36:32PM +0200, Raimar Falke wrote:
> On Mon, Jun 10, 2002 at 06:18:54PM +0200, Reinier Post wrote:
> > >   (It looks like it does this by monitoring the request ID, which is a 
> > > direct result of work for the CMA.  This is also a bit of a hack, and 
> > > probably a bit unstable in the long term as well.)
> > 
> > Requests may fail.  Raimar sends failure notifications.
> > But what happens if CMA is disabled?
> 
> The old network protocol is too relaxed to allow client side AI. It
> works ok for human players but not for programs. Basic problem is:
> "when is my request executed?" (so at the time you know that your
> request got executed you can check if the data that you expected is
> send by the server or in other words you can check if the server has
> executed what you have calculated).

This is only a problem if calculations are predictions, based on
requested values.  If all your requests succeed, changes from other
sources can still make your predictions inaccurate.  But I can
imagine that just keeping track of whether requests succeed
is "close enough" in many cases.

> All server response of one request is send in a batch.

A response batch contains all packets generated in response to
a single change request, even when they are sent in a batch.
But I don't know much about TCP/IP, perhaps the responses
will usually arrive in a single burst.

>       Raimar

-- 
Reinier