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33 lines
1.0 KiB
Markdown
33 lines
1.0 KiB
Markdown
# Segmentation FURPS
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## Functionality
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1. Outbound messages larger than the maximum Waku message size are partitioned in several messages to fit in Waku messages.
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2. Inbound partitioned messages are reconstructed in a whole message.
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3. A capping limit is applied to pre-segmented messages (e.g. 100MB).
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4. Messages under the maximum message size are not modified.
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## Usability
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1. Only takes a maximum message size as a parameter.
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## Reliability
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1. Reconstruction can be performed even when parts are received out or order.
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2. Reconstruction can be performed as long as 87.5% of the segments is received.
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3. If too many parts missing to reconstruct an informative error should be logged.
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## Performance
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1. The payload overhead does not exceed 12.5% overall, and 100 bytes per segment.
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## Supportability
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1. Nim library.
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## + (Privacy, Anonymity, Deployments)
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1. Segmentation metadata should not reveal information about the original message content
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2. Relevant for all Waku nodes.
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3. Nimble package manager is used to build.
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