collapsed_forwarding and ICP

From: Mark Nottingham <>
Date: Fri, 6 Feb 2009 10:07:54 +1100

If I have a peer and it has collapsed_forwarding on, at what point
will it return an ICP_HIT to me? E.g.,

1) As soon as there's an outstanding (therefore collapsed) request for
2) As soon as there's a cacheable response in-flight for it?
3) Only when the entire response is in-cache?

My reading of the code is that it's #1. Do I have this right?

If that's the case:
- On the plus side, this helps collapse requests across peers.
- On the down side, it seems like there's the potential for requests
to go to peers, only to find that the response is uncacheable.


Mark Nottingham
Received on Thu Feb 05 2009 - 23:19:18 MST

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