microsoft / microsoft/demikernel
[inetstack] Add Optional TCP Feature - Protection Against Wrapped Sequences (PAWS)
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- Dominant language
- Rust
- Stars
- 1.2k
- Forks
- 151
- PR merge metrics
- No merged PRs in 30d
Description
TCP has an optional feature called Protection Against Wrapped Sequences (PAWS) which improves TCP reliability on very high-speed networks by protecting against old duplicate packets arriving for the same connection (which can cause data corruption issues if accepted as valid "new" data). The faster the link, the more likely that the sequence number space will wrap in the time period that a duplicated packet might be delayed. On a 200 Gb/s link, the sequence number space wraps in 160 ms.
This feature depends upon the optional "Timestamps" feature mentioned in Issue demikernel/demikernel#182.
See RFC 7323 for more information.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reading RFC 7323 and the related Timestamps feature in Issue #182 to understand the dependency and required behavior. Done means implementing optional TCP Protection Against Wrapped Sequences support with that timestamp dependency, but the issue names no files or tests to guide the implementation.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- rust
- Domain
- networking
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100