Under the Hood: Transactions

E1: Exception; Get offerors

E2: List of offerors N1: Get offers

N2: List of offers

N3: Accept subscription

N4: Accepted

E1,2

N3,4

N1,2

Server

Client

2

5

4

3

Tom’sE-person

UserProfilingOffer

Tom

1: Request: e.g. HTTP

2: Which commpact to use ?

3: Use profiling commpact

4: Request to authorize

5: Authorization Decision

1: GET index.html

6: Result

Mike’sE-person

• Case: Establishing a new relationship [Auto-Accept]

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