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Subject: Low-level EDXL
All, I raised this with the few folks that were on last week's call, and they suggested I put it to the list: I would like to propose that the EDXL spec be extended to include a low-level version of the EDXL wrapper implemented as a protocol header extension. Specifically this would involve specifying a header extension to the underlying TCP or UDP protocols. This is not a foreign idea - RTSP and similar protocols 'bolt on' to TCP/IP and UDP/IP in the same manner. This would enable EDXL to function as a true protocol-level routing mechanism, and not only an application-level routing scheme, enabling systems to route the data by socket-level operations instead of having to fully decode XML and other data. The downside is that it will need to involve the creating of one or more test tools to generate the wrapper and transmit data. I'm happy to take up this task (I've started doing it already, actually). I believe these tools should be open source, but I am unsure of how OASIS membership would impact this. One other point that needs to be raised is that of mapping the verboseness of EDXL to this layer. Due to the rate at which things are changing, I believe that this protocol level version can be approached as either a tuple-based extension or a fixed-field extension with a few bytes room for future growth. In summary this proposal is to add a low-level packet-header-based implementation of EDXL as opposed to only the application layer as it currently exists. Regards Kon
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