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From: Alexander Nasonov (alnsn_at_[hidden])
Date: 2007-03-05 14:33:15

Ames Andreas wrote:
> I beg to differ, at least somehow. Although I'm with you, that a
> whole ORB implementation would not even remotely be feasible, I think
> a more constraint approach could be both interesting and useful.
> Would it be possible to rephrase that proposal to sth. like:
> 'Implement GIOP 1.2 on top of asio'?
> It would probably be most natural to concentrate on the asynchronous
> flavours of CORBA:
> * AMI on the client side (it's in the offical CORBA specs)
> * AMH for the server side (it's a proposal by Douglas Schmidt and
> implemented in TAO, see for
> example)

I know nothing about AMI and AMH but it seems like a good approach.

> Both flavours shouldn't differ on the protocol level from the normal
> synchronous approach but most probably they will affect the API layer.
> Some further points may be important:
> * Nicely separate layers 7 (GIOP primitives) and 6 (CDR)
> * Use TAO, OmniORB and/or a Java ORB (JacORB or the Sun ORB) to test
> interoperability
> * Provide an API to enable tampering with other protocol
> implementations (this would include the ability to customise the
> stack down to the bits)
> * Provide backwards compatibility with GIOP 1.1 and 1.0
> As a possible outcome/proof of concept I could imagine the following
> (in ascending order of complexity):
> * Provide a transparent GIOP proxy, e.g. for logging the traffic
> between two ORBs

If the proxy is the only thing an end-user could try, it is probably
not worth the effort.

> * Try to replace the native GIOP stack in TAO or OmniORB with the new
> one and measure performance differences for common usage scenarios

I like the idea. This would open up a possibility to share asio
"channel" with other network activities of an application.
Do you have a estimate on a completity of this task?

> * Provide python bindings for the mentioned tamoering API

Alexander Nasonov
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