🚀 go-pugleaf

Hi Adrian,

> Is it possible for one to write his own implementation of ScktSrvr?

The (Delphi) source code is included as ScktSrvr.dpr in the following 
places (depending on your version of C++Builder):

C:\Program Files\CodeGear\RAD Studio\5.0\source\Win32\db
C:\Program Files\Borland\BDS\4.0\source\Win32\vcl
C:\Program Files\Borland\CBuilder6\source\vcl

It's also possible to write an interceptor DLL (but again I've only done 
this with Delphi - see TDM #78 at http://www.drbob42.com/tdm/ to 
download the free Delphi source code for the example).

> Tks - Adrian.

Groetjes,
           Bob Swart

-- 
Bob Swart Training & Consultancy (eBob42.com) Forever Loyal to Delphi
CodeGear Technology Partner -- CodeGear RAD Studio Reseller (BeNeLux)
Blog: http://www.drbob42.com/blog - RSS: http://eBob42.com/weblog.xml

Hi Bob,

Thanks for your answer.

Erm, what is an interceptor DLL?
Tks - Adrian.

"Bob Swart" <Bob@BobSwart.com> wrote in message 
news:46C9942A.7010804@BobSwart.com...
> Hi Adrian,
>
>> Is it possible for one to write his own implementation of ScktSrvr?
>
> The (Delphi) source code is included as ScktSrvr.dpr in the following 
> places (depending on your version of C++Builder):
>
> C:\Program Files\CodeGear\RAD Studio\5.0\source\Win32\db
> C:\Program Files\Borland\BDS\4.0\source\Win32\vcl
> C:\Program Files\Borland\CBuilder6\source\vcl
>
> It's also possible to write an interceptor DLL (but again I've only done 
> this with Delphi - see TDM #78 at http://www.drbob42.com/tdm/ to download 
> the free Delphi source code for the example).
>
>> Tks - Adrian.
>
> Groetjes,
>           Bob Swart
>
> -- 
> Bob Swart Training & Consultancy (eBob42.com) Forever Loyal to Delphi
> CodeGear Technology Partner -- CodeGear RAD Studio Reseller (BeNeLux)
> Blog: http://www.drbob42.com/blog - RSS: http://eBob42.com/weblog.xml 

Hi Adrian,

> Thanks for your answer.

You're welcome.

> Erm, what is an interceptor DLL?

Using the Socket Server in DataSnap, we can use socket interceptions: 
peeking into what's happening between the client and the server when you 
use the SocketConnection component. You can use the IDataIntercept 
interface and the TPacketIntercept class to write your own DLL that must 
be registered with the SocketServer application as well as the 
TSocketConnection component and can be used to compress, encrypt, log or 
do whatever with the data packets that you wish...

> Tks - Adrian.

Groetjes,
           Bob Swart

-- 
Bob Swart Training & Consultancy (eBob42.com) Forever Loyal to Delphi
CodeGear Technology Partner -- CodeGear RAD Studio Reseller (BeNeLux)
Blog: http://www.drbob42.com/blog - RSS: http://eBob42.com/weblog.xml

Hi Bob,

> Using the Socket Server in DataSnap, we can use socket interceptions: 
> peeking into what's happening between the client and the server when you 
> use the SocketConnection component. You can use the IDataIntercept 
> interface and the TPacketIntercept class to write your own DLL that must 
> be registered with the SocketServer application as well as the 
> TSocketConnection component and can be used to compress, encrypt, log or 
> do whatever with the data packets that you wish...
> 

That sounds *very* good. Thanks again.

Got another question (sorry)...
Has anyone thought of a broadcasting scheme of updates between servers 
and clients? That would be most useful to propagate changes in a 
live/push fashion I would think.

As background, I have loads of experiencing developing 3-tier apps using 
   the ACE/TAO Corba implementation with servers written in C++ running 
on Linux and the gui written with C++ builder running on windows. This 
is a proven framework and is very fast and very robust. Yet, it's not 
RAD; DataSnap, though somewhat limited compared to 
CORBA/C++/hand-wiring, offers RAD in proven paradigm. Yes, I have read 
quite a few negative comments on the net about DataSnap. Admittedly, I 
have no experience with it and so must rely on other people's 
experiences with it.

What's your opinion about DataSnap's robustness, performance and 
scalability? I'm very tempted to give it a try.


Thanks - Adrian.