Task #1253
closed
Scope control for /localhop Interests
Added by Junxiao Shi almost 11 years ago.
Updated over 10 years ago.
Description
Develop a mechanism to restrict the propagation of Interests under /localhop namespace.
Rules¶
- Interest under /localhop can come from a local app or a remote host.
- If PIT entry under /localhop has at least one InRecord from a local app, it can be forwarded to local apps and remote hosts.
- If PIT entry under /localhop has all InRecords from remote hosts, it can only be forwarded to local apps.
- PIT entry under /localhop can be satisfied by Data from any source.
Breakdown¶
Face should have a property to tell whether it represents a local app.
PIT entry should have a method to tell whether at least one InRecord is from a local app.
Outgoing Interest pipeline should enforce the rules to restrict Interest propagation.
Strategy may understand this scope and make smart forwarding decision.
- Subject changed from Scope control for /locallink Interests to Scope control for /link-local Interests
- Description updated (diff)
- Estimated time set to 4.00 h
20140222 conference call decides to change namespace from /locallink to /link-local, which follows convention.
We discussed whether /link-local Interest can propagate to local apps:
- argument for inclusive scope (/link-local can propagate to local apps): when the consumer sends an Interest, it does not care where the Data comes from.
- argument for exclusive scope (/link-local can only go to remote nodes): the consumer needs precise control; a local producer might be malicious and is trying to fool the consumer.
No consensus was reached. The current rule is equivalent to CCNx Scope=2 (inclusive scope), and remains unchanged.
- Subject changed from Scope control for /link-local Interests to Scope control for /localhop Interests
- Description updated (diff)
- Assignee set to Junxiao Shi
20140223 conference call again changes the namespace to /localhop, because its semantic is different from link-local in IP, so a different name should be used to avoid confusion.
Scope has two distinct meanings:
- vicinity: Name is relative to some anchor
- boundary: Data cannot leave a certain area
/localhop takes the first meaning. It only limits Interest propagation.
- Status changed from New to In Progress
- Start date set to 03/13/2014
- Status changed from In Progress to Code review
- % Done changed from 0 to 40
I359747688568934070d1583995957835ac690f28
Outgoing Interest pipeline can enforce /localhop scope.
A later commit will make some of the strategies understand this scope.
- Status changed from Code review to In Progress
Pipeline is merged. I'll work on strategies.
Design: PIT entry or strategy base class should have an attribute to determine whether forwarding to outFace would violate scope. Strategies can use this attribute to decide where to forward.
- Status changed from In Progress to Code review
- % Done changed from 40 to 80
Strategies now understand scope control, and can also avoid forwarding an Interest back to its incoming Face.
- Status changed from Code review to Closed
- % Done changed from 80 to 100
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