Aggregators should not have to store tasks

ietf-wg-ppm / draft-ietf-ppm-dap-taskprov

Define DAP extension for in-band task provisioning.

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Aggregators should not have to store tasks #31

Closed cjpatton closed 1 year ago

cjpatton commented 1 year ago

I had hoped it would be possible to re-generate the task config on the fly from the long-lived pre-shared key, but this turned out to be somewhat tricky in the implementation of draft-02. In the next draft we should consider what changes would be needed to avoid replicating this data.

See https://github.com/cloudflare/daphne/issues/257.

cjpatton commented 1 year ago

A couple of observations:

The taskprov header should appear in all requests from Leader -> Helper for the aggregation and collection flows.l
If we re-generate the task config on-the-fly, then there is a chance of opting out of a task that we previously opted into. Should this be permissible in the spec? In practice it should be unlikely.