microsoft / microsoft/demikernel

[inetstack] Add Optional TCP Feature - Timestamps

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enhancement
Dominant language
Rust
Stars
1.2k
Forks
151
PR merge metrics
No merged PRs in 30d

Description

TCP has an optional "Timestamps" feature which provides a mechanism for taking considerably more accurate time measurements (used to determine the round-trip time, or RTT). Accurate and timely RTT measurements are important for determining the current retransmit timeout (RTO) value.

Support for the Timestamps feature is also a prerequisite for supporting the "Protection Against Wrapped Sequences" (PAWS) mechanism, which protects against errors due to sequence number wrap-around on high-speed connections.

See RFC 7323 for more information.

Contributor guide

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

No implementation files, tests, or entry points are named. Start by reading RFC 7323 and locating the inetstack TCP implementation; done means the optional TCP Timestamps feature is supported and its behavior is covered by appropriate tests.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
networking
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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