docs(adr): cite RFC 9293 for direct TCP peer binding

[seonghobae]

Draft only. Do not merge. Do not mark Ready.

Branched from current main, not stacked on #224 or other open PRs. Docs only. Touches only docs/adr/0005-direct-socket-binding.md to avoid conflicting with #224.

Accepted ADR 0005 already names RFC 9293 in the Standards paragraph (TCP connection identified by a pair of endpoint sockets; TcpStream::connect_timeout / peer_addr as the direct transport proof) but had no APA 7th References with DOI/URL. This change keeps the existing decision, Accepted status, and Standards prose unchanged and adds locators for RFC 9293 only.

Leave the PR as GitHub Draft.

Locator (live-checked 2026-08-25)

Source	Locator	Live-check
Eddy, W. (Ed.). (2022). Transmission Control Protocol (TCP) (RFC 9293). RFC Editor.	https://doi.org/10.17487/RFC9293 · https://www.rfc-editor.org/rfc/rfc9293	Crossref MATCH (editor W. Eddy; 2022-08). rfc-editor JSON authors ["W. Eddy, Ed."], August 2022, HTTP 200.

Scope

• Add an APA 7th References section after the existing Standards paragraph in ADR-0005.
• Cite RFC 9293 only.
• Do not edit CHANGELOG.md or docs/adr/README.md (those files are already patched by Draft docs(adr): cite IANA and TLS RFCs for destination and identity ADRs #224).
• No Rust, tests, Cargo, Dockerfile, README, or workflow changes.

Not cited

Drafts, unmerged PRs, cancelled OpenCode/Strix scans, RFC 793 as current (9293 is the current Standards Track TCP spec), rustls/rustc docs as standards, invented papers, DNS-rebinding papers, TLS/HTTP/proxy/Chromium claims.

Verification

Docs-only markdown citation. File-level diff is confined to docs/adr/0005-direct-socket-binding.md.

  

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