I am currently investigating how the delta stuff (binary deltas) could fit into 
the ongoing provisioning work.

When working with deltas there are certain constraints such as:
- when requesting a delta for an artifact it is essential that the request 
contains an identification (version, md5, ..) of the artifact that is already 
available on the client, so that is possible to regenerate the new artifact 
from the old artifact and the delta.
- the client should not rely on the fact that the server(s) can always respond 
with a delta. In some way the client needs to have some flexibility on handling 
the data (deltas, complete ´files´) which the server can respond.

Currently provisioning uses ECF to handle the transport and download. 
Can/should delta handling be part of ECF - as a kind of smart 
transport/download handling? Or is delta handling so important to provisioning 
that it should be part of provisioning?
 
Any thoughts?
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