[Verse-dev] Verse r4, problems with missing geometry data, reson found

[Martin Schlingmann]

Normally you should not have any kind of problem with UDP on a normal
network.
Either you have a serious network problem or it's something else.
However, if im not wrong... UDP means that you have no knowledge of in
what order pakets arrive.. can this be a problem?

/martin


> Emil Brink schrieb:
>> On Sat, 23 Oct 2004 16:27:13 +0200
>>
>> [missing data]
>>
>>>>Do you terminate your application immediately once
>>>>all data is sent,
>>>>without also subscribing to the layers to keep track of what data has
>>>>been received by the host?
>>>
>>>Brecht suggested doing that. I made a quick fix by not letting the
>>>pusher terminate the connection. it just sits forever calling
>>>callback_update, so this shouldn't be the problem.
> i have added a quick hack to my pusher:
> when all data was sent i just resent it. that means with brute force
> resend all geometry layers :-)
> THAT fixes the bunny, however i have to do it *10* times until the bunny
> seems ok.
> That may also be the reason for the missing texture coordinates with
> ppctest2, there are still no textures on the objects, but the scene
> looks already different. i just resent geometry, not bitmaps.
>
> I didn't expect that UDP packets are lost even on local transfer!
>
> This seems to be the central problem! Do you know how much complexity is
> added to the pusher if i want to get sure every bit is sent correctly?!
>
> But i guess i'll have to do so, since you won't go from UDP to TCP. I
> would strongly recommend using TCP. If the transmission is so bad that
> packets get lost often (the only case where TCP is slower than UDP) the
> connection is too slow/bad for 3d data transfer anyway, since 3d data
> takes much space.
>
> --
> Greetings, Thorsten
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