On Coding Multiplatform Distributed Systems...

Wiggly asks: "I would like to program distributed systems using the same code base on multiple platforms and multiple languages therefore I am asking around..." And he's asking Slashdot. You've only read the tip of the iceberg, however. There's much more to digest if you decide to click on thru.

"I will firstly say though that none of this is meant as flamebait, or to detract from what any of the projects/products mentioned here have achieved. I just have a wishlist and I am looking for answers and opinions, not a holy war. I am sure that people use many of the things mentioned here on a regular basis for heavy duty apps quite happily and with great results.

There are a whole bunch of distributed programming frameworks around. RPC, ILU, CORBA, DCE, Java RMI and DCOM to name but the most common. Many of these are available on multiple platforms and there are a whole slew of interoperability tools to get them to talk to each other with varying degrees of success. Right now I will focus on CORBA as it is getting much more press than any other recently, and because it is the system that I personally know more about than the others..

Commercially there are a few good ORBs but they are terribly expensive. Developer kits for 'a well known brand' with good CORBA compliance start around 1500 - 1900 UK Pounds, for developer kits. Redistribution costs are around 1700 UK Pounds per processor. These kinds of costs don't really let people play with systems before buying although I know that most comercial ORB vendors will give you trials if they think you are a good bet to buy. Additionally most of the commercial ORBS support as few platforms as they possibly can.

On the Open Source side of things there are many, many implementations of CORBA to choose from, with their own special focus. CORBA compliance, speed, interoperability or whatever else that project's maintainers view as the most important goal(s). There is some great code out there, and a load of people spending every waking hour making it better.

What I cannot find at the moment is a system that targets multiple platforms and multiple languages. Want to use Perl to talk to C++ back ends? Well MICO/COPE is coming along. Want to use the same code on Windows NT as well? Too bad, NT support is very flaky (I have spent too many hours trying to get it working). Want to use Java Applets to talk to C? You have problems. Pick your favourite front/back end language combination and platform then try to find a solution. Problematic at best, and probably not possible at the moment.

Are these very strange requirements/wishes or would other people be willing to sacrifice ratified standards compliance and possibly performance for orthogonality of language/platform availability? I would like to be able to write code for Linux/Unices/Windows in my languages of choice (for me this would be Perl, Java and C++) without having to use multiple implementations on the different platforms.

The way things are shaping up I am thinking hard about rolling my own, because right now I have a need that I cannot fulfill from outside sources. Yes, not Invented Here strikes again, but I can't find a solution. Am I alone in this? What do you think? Do you have any solutions?"