Task #1920: Document 8800 octet limit for data packet size - NFD - NDN project issue tracking system

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Task #1920

closed

Document 8800 octet limit for data packet size

Added by Jeff Burke over 10 years ago. Updated about 10 years ago.

Status:

Closed

Priority:

Normal

Assignee:

Junxiao Shi

Category:

Docs

Target version:

v0.3

Start date:

Due date:

% Done:

100%

Estimated time:

Description

I cannot find mention of the practical 8800 octet limit (or MAX_NDN_PACKET_SIZE) for data packets in either the packet format spec, NFD, or NDN-CXX documentation.

Can this be documented? This would be useful to libraries that are performing segmentation based on this limit, and provides a spec upon which to base the behavior of NDN-CCL.

Related issues 1 (0 open — 1 closed)

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Updated by Junxiao Shi over 10 years ago

Description updated (diff)
Start date deleted (~~08/24/2014~~)

At 20140114 meeting, Van said:

mechanism does not have to embody policy. mechanism doesn't care, just grabs bits until end marker. policy decision imposed when it arrives.

The 8800-octet limit is a practical limit which is a kind of "policy", so it cannot be mentioned in NDN-TLV spec.

ndn-cxx documentation already contains MAX_NDN_PACKET_SIZE constant in Doxygen.
There is no description for this constant, because the constant name is sufficient for its meaning.

MAX_NDN_PACKET_SIZE limit is imposed on all packet types, not just Data.

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Updated by Jeff Burke over 10 years ago

Yes, I agree that it doesn't need to be in the spec, but the current location is a little obscure for someone not familiar with the library or that knows where to look - and it is relevant to many. Perhaps it could be mentioned in the FAQ or another part of the NFD / ndn-cxx documentation.

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