Under the Hood: Transactions

• Case: Pre-existing relationship [no network caching]

• Specialization: Rights clearing house case

Server

Client

2

5

4

3

Tom’sE-person

Tom’s Commpact

Tom

1: GET index.html

6: Result

Third Party

e.g. CCC

1: Request: e.g. HTTP

2: Which commpact to use ?

3: Use Tom’s commpact

4: Request to authorize

5: Authorization Decision

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