Re: Application knowledge of transport characteristics (was: Re: Domain Centric Administration)

[Michael Tuexen <Michael.Tuexen at lurchi.franken.de>]

On Jul 9, 2007, at 7:53 AM, Lars Eggert wrote:

> On 2007-7-5, at 19:07, ext Tom.Petch wrote:
> > If we had a range of transports (perhaps like OSI offered), we  
> > could choose the
> > one most suited.  We don't, we only have two, so it may become a  
> > choice of one
> > with a hack.  But then that limited choice may be the reason why  
> > the Internet
> > Protocol Suite has become the suite of choice for most:-)
>
> We have four standards-track transport protocols (UDP, TCP, DCCP  
> and SCTP), and, FWIW, SCTP has a concept of record boundaries.
Yes, has the concept of record boundaries: It transfers user  
messages, not bytes like TCP.
But isn't the sane true for UDP and DCCP?
> Designers of applications and higher-layer protocols still have a  
> tendency to ignore SCTP and DCCP and the particular features they  
> can offer to applications. This can make applications more complex,  
> because they need to re-invent mechanisms that a more appropriate  
> transport protocol would have provided.
>
> Lars_______________________________________________
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